International Conferences

 

[1]        I. Mito, T. Inoue, H. Nishimoto, T. Murakami, N. Henmi, and K. Kobayashi, “Highly stable single longitudinal mode operation in λ/4 shift DFB-DC-PBH LDs,” 12th European Conference on Optical Communication (ECOC'86), Barcelona, Spain, vol.1, pp.29-32 (1986).  (At the time of submission of this paper, my last name was “Inoue.”)

[2]        M. Yamaguchi, T. Numai, Y. Koizumi, I. Mito, and K. Kobayashi, “Stable single longitudinal mode operation in λ/4 shift DFB-DC-PBH LDs,” Conference on Optical Fiber Communication (OFC'87), Reno, U.S.A., TuC4 (1987).

[3]        M. Yamaguchi, Y. Koizumi, T. Numai, I. Mito, and K. Kobayashi, “High single longitudinal yield in 1.55 μm phase-shifted DFB-DC-PBH LDs with a novel cavity end structure,” 13th European Conference on Optical Communication (ECOC'87), Helsinki, Finland, vol.1, pp.51-54 (1987).

[4]        M. Yamaguchi, S. Takano, S. Fujita, T. Numai, I. Mito, and K. Kobayashi, “High efficiency and high speed operation in 1.55μm λ/4 shifted DFB-DC-PBH LD with a new window structure,” Conference on Optical Fiber Communication (OFC'88), New Orleans, U.S.A., ThK4 (1988).

[5]        S. Murata, T. Numai, S. Takano, and I. Mito, “1.5μm wavelength tunable DBR lasers with large continuous tuning ranges and narrow spectral linewidths,” 11th IEEE International Semiconductor Laser Conference, Boston, U.S.A., pp.122-123 (1988).

[6]      T. Numai, S. Murata, and I. Mito, “1.5 μm tunable wavelength filter with wide tuning range and high constant gain using phase controllable DFB LD,” Topical Meeting on Integrated and Guided Wave Optics (IGWO'88), Santa Fe, U.S.A., Postdeadline Papers, PD-2 (1988).

[7]      T. Numai, S. Murata, and I. Mito, “1.5 μm tunable wavelength filter using phase-shift controllable DFB LD with wide tuning range and high constant gain,” 14th European Conference on Optical Communication (ECOC'88), Brighton, U.K., Part 1, pp.243-246 (1988).

[8]      M. Nishio, T. Numai, S. Suzuki, M. Fujiwara, M. Itoh, and S. Murata, “Eight-channel wavelength-division switching experiment using wide-tuning-range DFB LD filters,” 14th European Conference on Optical Communication (ECOC'88), Brighton, U.K., Part 2, pp.49-52 (1988).

[9]      M. Nishio, S. Suzuki, N. Shimosaka, T. Numai, T. Miyakawa, M. Fujiwara, and M. Itoh, “An experiment on photonic wavelength-division and time-division hybrid switching,” 2nd Topical Meeting on Photonic Switching, Salt Lake City, U.S.A., pp.98-100, ThE5 (1989).

[10]     S. Suzuki, M. Nishio, T. Numai, M. Fujiwara, M. Itoh, S. Murata, and N. Shimosaka, “A photonic wavelength-division switching system using tunable laser diode filters,” International Conference on Communications, Boston, U.S.A., paper 23.1 (1989).

[11]      M. Kitamura, H. Yamazaki, T. Ono, T. Sasaki, N. Hamao, T. Numai, S. Yamazaki, H. Yamada, and I. Mito, “High power and narrow linewidth 1.5-μm MQW DFB-LDs with low FM dip frequency,” Conference on Lasers and Electro-optics (CLEO'90), Anaheim, California, U.S.A., CTHA5 (1990).

[12]     M. Nishio, S. Suzuki, T. Numai, and M. Fujiwara, “Application of FSK signals to wavelength-division switching systems,” International Topical Meeting on Photonic Switching, Kobe, Japan, pp.173-175, 13D-4 (1990).

This paper is also published as follows: M. Nishio, S. Suzuki, T. Numai, and M. Fujiwara, “Application of FSK signals to wavelength-division switching systems,” in Photonic Switching II edited by K. Tada and H. S. Hinton (Springer-Verlag, 1990), pp.282-285.

[13]      K. Kasahara, I. Ogura, T. Numai, H. Kosaka, N. Hamao, and Y. Tashiro, “A VSTEP as an optically self-addressed spatial light modulator with transmission light amplification function,” Third Optoelectronic Conference (OEC'90) Makuhari Messe, Japan. pp.116-117, 12B4-4 (1990).

[14]      T. Numai, “ Semiconductor tunable wavelength filters,” (Invited Paper) Third Optoelectronic Conference (OEC'90) Makuhari Messe, Japan. pp.140-141, 12C2-1 (1990).

[15]      I. Ogura, T. Numai, H. Kosaka, M. Sugimoto, Y. Tashiro, and K. Kasahara, “A novel optical self-routing switch with a wavelength filtering function using a vertical to surface transmission electro-photonic device,”  22nd Conference on Solid State Devices and Materials, Sendai, Japan, pp.533-536, D-3-5 (1990).

[16]      M. Sugimoto, T. Numai, I. Ogura, H. Kosaka, and K. Kasahara, “Surface emitting laser operation in vertical to surface transmission electro-photonic devices with a vertical cavity,” IEEE Lasers and Electro-Optics Society 1990 Annual Meeting Boston, U.S.A., PD-8 (1990).

[17]      I. Ogura, T. Numai, H. Kosaka, M. Sugimoto, and K. Kasahara, “Surface–emitting-laser operation and optical switching characteristics in vertical to surface transmission electro-photonic devices with a vertical cavity (VC-VSTEP),” Quantum Optoelectronics Topical Meeting, TuA4-1, Salt Lake City, March (1991).

[18]      R. A. Linke, G. E. Devlin, I. Ogura, T. Numai, and K. Kasahara, “Switching energy requirement of the VSTEP optoelectronic switch,” IEEE Lasers and Electro-Optics Society 1991 Annual Meeting, San Jose, U.S.A., OE7.4 (1991).

[19]      T. Numai, I. Ogura, H. Kosaka, K. Kurihara, M. Sugimoto, and K. Kasahara, “High efficiency and large light-output laser operation in a pnpn vertical to surface transmission electro-photonic devices with a vertical cavity,” IEEE Lasers and Electro-Optics Society 1991 Annual Meeting, San Jose, U.S.A., OE7.5 (1991).

[20]     Y. Yamanaka, K. Yoshihara, I. Ogura, T. Numai, K. Kasahara, and Y. Ono, “Optical interconnection using cascaded vertical to surface transmission electro-photonic devices,” Optical Society of America 1991 Annual Meeting, San Jose, U.S.A., FS3 (1991).

[21]      H. Kosaka, I. Ogura, M. Sugimoto, H. Saito, T. Numai, and K. Kasahara, “Pixels consisting of double vertical-cavity detector and single vertical-cavity laser sections for 2-D bidirectional optical interconnections,” 1992 International Conference on Solid State Devices and Materials, Tsukuba, Japan, B-5-2 (1992).

[22]      K. Kurihara, T. Numai, I. Ogura, H. Kosaka, M. Sugimoto, and K. Kasahara, “High electronic-optical conversion efficiency in a vertical to surface transmission electro-photonic device with a vertical cavity,” 1992 International Conference on Solid State Devices and Materials, Tsukuba, Japan, B-5-3 (1992).

[23]      M. Sugimoto, I. Ogura, H. Saito, A. Yasuda, K. Kurihara, H. Kosaka, T. Numai, and K. Kasahara, “Surface emitting devices with distributed Bragg reflectors grown by highly precise molecular beam epitaxy,” Seventh International Conference on Molecular Beam Epitaxy, Schwäbisch Gmünd, Germany, Mo1.1 (1992).

[24]      I. Ogura, A. Yasuda, M. Sugimoto, T. Numai, M. Nishio, and K. Kasahara, “Optically controllable pixel based on vertical to surface transmission electro-photonic devices using four-terminal pnpn structure,” IEEE LEOS Summer Topical Meeting on Smart Pixels, Santa Barbara, U.S.A., MD2 (1992).

[25]      T. Numai, K. Kurihara, I. Ogura, H. Kosaka, M. Sugimoto, and K. Kasahara, “Effect of sidewall reflector on current versus light-output in a pnpn vertical to surface transmission electro-photonic device with a vertical cavity,” 13th IEEE International Semiconductor Laser Conference, Takamatsu, Japan, D-17 (1992).

[26]      S. Araki, S. Kawai, H. Kurita, K. Kubota, T. Numai, and K. Kasahara, “Nonblocking optical interconnection networks using electro-optical matrix switches based on VSTEPs,” Optical Computing Topical Meeting, Palm Springs, U.S.A., OThB3 (1993).

[27]      H. Kosaka, I. Ogura, H. Saito, M. Sugimoto, K. Kurihara, T. Numai, and K. Kasahara, “Pixels consisting of a single vertical-cavity laser-thyristor and a double vertical-cavity phototransistor,” Quantum Optoelectronics Topical Meeting, Palm Springs, U.S.A., QThA3 (1993).

[28]     M. Kajita, K. Kurihara, T. Numai, H. Saito, M. Sugimoto, H. Kosaka, I. Ogura, and K. Kasahara, “Thermal analysis of laser-emission surface-normal optical devices with a vertical cavity,” 1993 International Conference on Solid State Devices and Materials, Makuhari Messe, Japan. pp.694-696, PD-1-11 (1993).

[29]      T. Kawakami, T. Numai, T. Yoshikawa, M. Sugimoto, Y. Sugimoto, H. Yokoyama, K. Kasahara, and K. Asakawa, “Microcavity surface-emitting laser with record low threshold current of 190 μA,” 1993 International Conference on Solid State Devices and Materials, Makuhari Messe, Japan, pp.972-973, LC-9 (1993).

[30]      K. Kasahara, H. Kosaka, and T. Numai, “VSTEP pixels for optical interconnection and switching,” IEEE Lasers and Electro-Optics Society 1993 Annual Meeting, San Jose, U.S.A., SP2.3 (1993).

[31]      S. Kawai, S. Araki, H. Kurita, T. Numai, K. Kasahara, and K. Kubota, “Multistage optical interconnection networks using VSTEPs and microoptics,” The 4th Microoptics Conference and the 11th Gradient-Index Optical Systems, Kawasaki, Japan, L6 (1993).

[32]      T. Numai, “Surface emitting optical devices for 2-D integration,” (Invited Paper) SPIE's International Symposium, OE/LASE '94, Los Angeles, U.S.A., 2145A-08 (1994).

[33]     T.Numai and K.Kasahara, “Low threshold surface-emitting optical devices,” (Invited Paper) SPIE's International Symposium, OE/LASE'94, Los Angeles, U.S.A., 2147-15 (1994).

[34]      G. Sato, T. Numai, M. Hoshiyama, I. Suemune, H. Machida, and N. Shimoyama, “MOMBE growth of ZnSe with new Zn and Se precursors without precracking,”  Eighth International Conference on Molecular Beam Epitaxy, Osaka, Japan, B9-1 (1994).  

[35]      G. Sato, T. Numai, M. Hoshiyama, I. Suemune, H. Machida, and N. Shimoyama, “MOMBE growth of nitrogen-doped p-type ZnSe, “1995 International Conference on Solid State Devices and Materials, Osaka, Japan, pp.713-715, PC-9-8 (1995).

[36]      M. Arita, A. Avramescu, K. Uesugi, I. Suemune,T. Numai, H. Machida, and N. Shimoyama, “Self-organized CdSe quantum dots on (100) ZnSe/GaAs surfaces grown by MOMBE,” 1996 International Symposium on Formation, Physics and Application of Quantum Dot Structures, Sapporo, Japan, Tu1-4 (1996).

[37]      T. Kimura, M. Arita, K. Uesugi, T. Numai, I. Suemune, H. Machida, and N. Shimoyama, “MOMBE growth and characterization of [ZnSe/MgSe/ZnSe/ZnS]n pseudo-quaternary alloy,” 16th Electronic Materials Symposium, Osaka, Japan (1997).

[38]      J. Hirose, K. Uesugi, M. Hoshiyama, T. Numai, I. Suemune, H. Machida, and N. Shimoyama, “p-type ZnSe grown by MOMBE with insertion of ZnTe:Li submonolayers,” 16th Electronic Materials Symposium, Osaka, Japan  (1997).

[39]      A. Ueta, M. Arita, A. Avramescu, K. Uesugi, I. Suemune,T. Numai, H. Machida, and N. Shimoyama, “Selective area growth of ZnSe and ZnS by MOMBE,” 8th International Conference on II-VI Compounds, Grenoble, France (1997).

[40]      A. Ueta, A. Avramescu, K. Uesugi, I. Suemune,T. Numai, H. Machida, and N. Shimoyama, “Selective area growth of widegap II-VI semiconductors on patterned substrates,” 1997 International Conference on Solid State Devices and Materials, Japan (1997).

[41]      T. Numai, T. Koide, T. Minemoto, H. Takakura, and Y. Hamakawa, “Lateral graphoepitaxy of germanium controlled by microstructures on SiO2 surface,” International Conference on Solid State Devices and Materials, Tower Hall Funabori, Tokyo, Japan, pp.492-493, P4-1 (2004).

[42]      T. Numai, T. Koide, T. Minemoto, H. Takakura, and Y. Hamakawa, “Nanoimprint lithography using Novolak photoresist and soft mold at room temperature,” International Conference on Solid State Devices and Materials, Tower Hall Funabori, Tokyo, Japan, pp.592-593, P8-3 (2004).

[43]      N. Kakimoto and T. Numai, “Control of Spectral Photosensitivity in Stacked Color Sensors: Proposal and Theoretical Analysis,” International Conference on Solid State Devices and Materials, Kobe International Conference Center, Kobe, Japan, pp.742-743, P7-18 (2005).

[44]      J. Onishi, S. Kojima, and T. Numai, “Effects of frequency allocations and zero dispersion frequencies on FDM lightwave transmission systems,” Twelfth Optoelectronics and Communications Conference/16th International Conference on Integrated Optics and Optical Fiber Communication (OECC/IOOC2007), Pacifico Yokohama, Yokohama, Japan, 11P-11 (2007).

[45]      Y. Ito, J. Onishi, S. Kojima, and T. Numai, “Influence of modulation formats on FWM noises in FDM optical fiber transmission systems,” Twelfth Optoelectronics and Communications Conference/16th International Conference on Integrated Optics and Optical Fiber Communication (OECC/IOOC2007), Pacifico Yokohama, Yokohama, Japan, 11P-12 (2007).

[46]      J. Onishi, S. Kojima, and T. Numai, “Effects of frequency allocations and polarization allocations on FDM lightwave transmission systems,” Twelfth Optoelectronics and Communications Conference/16th International Conference on Integrated Optics and Optical Fiber Communication (OECC/IOOC2007), Pacifico Yokohama, Yokohama, Japan, 11P-13 (2007).

[47]      N. Shomura and T. Numai, “Improvement of Kink-Free Light Output for Fiber Pump Semiconductor Lasers,” International Conference on Solid State Devices and Materials, International Conference Center, Tsukuba, Japan, pp.994-995, E-8-3 (2007).

[48]      T. Numai, “Imprint lithography at room temperature with novolak resin and its application,” IUPAC 3rd International Symposium on Novel Materials and Synthesis (NMS-III) & 17th International Symposium on Fine Chemistry and Functional Polymers (FCFP-XVII) , Shanghai, China (2007).

[49]      T. Numai, “Suppression of FWM Noises in FDM Lightwave Transmission Systems by Frequency, Polarization, and Bit-phase Allocations,” (Invited Paper) Progress In Electromagnetics Research Symposium (PIERS 2008 in Cambridge, USA) Cambridge, USA, p.366 (2008).

[50]      S. Kojima and T. Numai, “Suppression of FWM Noises in FDM Lightwave Transmission Systems by Modified Repeated Unequally-spaced Frequency Allocations,” Progress In Electromagnetics Research Symposium (PIERS 2008 in Cambridge, USA) Cambridge, USA, p.371 (2008).

[51]      S. Kojima and T. Numai, “Influence of Frequency Allocations and Optical Filters on FDM Optical Fiber Communications,” Progress In Electromagnetics Research Symposium (PIERS 2008 in Cambridge, USA) Cambridge, USA, p.372 (2008).

[52]     N. Shomura and T. Numai, “Fiber pump semiconductor lasers with optical antiguiding layers for horizontal transverse modes,” The 21st IEEE International Semiconductor Laser Conference, Sorrento, Italy, P-13 (2008).

[53]      M. Fujimoto, N. Shomura, and T. Numai, “Fiber pump semiconductor lasers with optical antiguiding layers for horizontal transverse modes: dependence on mesa width,” International Conference on Solid State Devices and Materials, International Conference Center, Tsukuba, Japan, P-7-15 (2008).

[54]      Y. Ito, J. Onishi, S. Kojima, and T. Numai, “Influence of modulation formats on FWM noises in FDM lightwave transmission systems,” IEEE Photonics Global @Singapore 2008, SMU Conference Centre, Singapore, Singapore (2008).

[55]      N. Kakimoto and T. Numai, “Stacked color sensor with a distributed Bragg reflector,” Progress In Electromagnetics Research Symposium (PIERS 2009 in Beijing, China) Beijing, China (2009).

[56]      Y. Ito, T. Tamo, and T. Numai, “Reduction of four wave mixing noises in FDM optical fiber transmission systems with quaternary bit-phase arranged return-to-zero,” Progress In Electromagnetics Research Symposium (PIERS 2009 in Beijing, China) Beijing, China (2009).

[57]      H. Yoshida and T. Numai, “Ridge-type semiconductor lasers with antiguiding layers for horizontal transverse modes: dependence on space,” The 14th Optoelectronics and Communications Conference (OECC2009), Hong Kong Convention and Exhibition Centre, Hong Kong, China, TuC1 (2009).

[58]      H. Takada and T. Numai, “Ridge-type semiconductor lasers with antiguiding cladding layers for horizontal transverse modes,” International Conference on Solid State Devices and Materials, International Conference Center, Sendai, Japan, P-7-10 (2009).

[59]      N. Shomura and T. Numai, “Ridge-type semiconductor lasers with optical antiguiding layers for horizontal transverse modes: dependence on step positions,” International Conference on Solid State Devices and Materials, International Conference Center, Sendai, Japan, P-7-11 (2009).

[60]      H. Takada and T. Numai, “Ridge-type semiconductor lasers with antiguiding cladding layers for horizontal transverse modes,” IEEE TENCON2009, Suntec Singapore International Convention & Exihibition Centre, Singapore, Singapore, THU 1.4.1 (2009).

[61]      T. Nakamura and T. Numai, “Reduction of Four-wave-mixing Noises by Unequallyspaced Allocations with Dual Base Units in FDM Optical Fiber Transmission Systems,” Progress In Electromagnetics Research Symposium (PIERS 2010 in Xi’an), p.740, Xi’an, China (2010).

[62]     T. Tamo and T. Numai, “Reduction of Four-wave-mixing Noises by FSK Modulation with Dual Deviation Frequencies in FDM Optical Fiber Transmission Systems,” Progress In Electromagnetics Research Symposium (PIERS 2010 in Xi’an), p.741, Xi’an, China (2010).

[63]      T. Tamo and T. Numai, “Reduction of Four-Wave-Mixing in FDM Lightwave Transmission Systems by Asymmetric Repeated Unequally Spaced Frequency Allocations,” Progress In Electromagnetics Research Symposium (PIERS 2010 in Cambridge), p.318, Cambridge, U.S.A. (2010).

[64]      T. Tamo and T. Numai, “Reduction of Four-Wave-Mixing in FSK FDM Lightwave Transmission Systems by Asymmetric Repeated Unequally Spaced Frequency Allocations,” Photonics Global @Singapore 2010, Suntec Singapore International Convention & Exihibition Centre, Singapore, Singapore, P1-07 (2010).

[65]      H. Yoshida and T. Numai, “Numerical Simulation of Optoelectronic Devices Article Title: Simulation of a Ridge-Type Semiconductor Laser with Selectively Proton-Implanted Cladding Layers,” 11th International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD 2011), MP16, pp.51-52, Angelicum, Rome, Italy, (2011).

[66]      H. Kato, H. Yoshida, and T. Numai, “Simulation of a Ridge-Type Semiconductor Laser for Separate Confinement of Horizontal Transverse Modes and Carriers,” 12th International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD 2012), ThB4, pp.125-126, Shanghai, China, (2012).

[67]      G. Chai and T. Numai, “Ridge-Type Semiconductor Laser with a Partially Undoped Antiguiding Cladding Layer for Horizontal Transverse Modes,” Progress In Electromagnetics Research Symposium (PIERS 2013 in Taipei), p.225, Taipei, Taiwan (2013).

[68]      D. Katsuragawa and T. Numai, “Symmetric Ridge-type Semiconductor Laser with Selectively Formed Double-Sided Antiguiding Cladding Layers,” Progress In Electromagnetics Research Symposium (PIERS 2013 in Stockholm) , p.1513, Stockholm, Sweden (2013).

[69]      G. Chai and T. Numai, “Simulation of a Ridge-Type Semiconductor Laser with　Horizontal Coupling of Lateral Modes,” 13th International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD 2013), MP27, pp.61-62, University of British Columbia, Vancouver, Canada (2013).

[70]     D. Katsuragawa and T. Numai, “Simulation of a Ridge-type Semiconductor Laser with Selective Double-Sided Anti-guiding and Partially Undoped Cladding Layers,” 14th International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD 2014), MP25, pp.73-74, Palma de Mallorca, Spain (2014).

[71]      T. Numai, “Control of Longitudinal and Transverse Modes in Semiconductor Lasers,” (Invited Paper) 2015 EMN Optoelectronics Meeting, A-13, Beijing, China (2015).

[72]     K. Ichikawa and T. Numai, “Simulation of a Resonance-shifted DFB-LD for High Efficiency Operation,” 15th International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD 2015), MP30, Taipei, Taiwan (2015).

[73]      T. Numai, “Resonance-Shifted DFB-LD for High E/O Conversion Efficiency and Stable Single Longitudinal Mode Operation,” (Invited Paper) 2016 EMN Beijing Meeting, T09, Beijing, China (2016).

[74]     T. Numai, “Enhancement of Resonance Frequency in a DFB-LD with Internally Incident Modulated Light,” 16th International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD 2016), MP29, Sydney, Australia (2016).

[75]        T. Numai, “High Resonance Frequency in a Coupled Cavity DFB-LD with Phase-Shifted/Uniform Gratings by Photon-Photon Resonance,” 17th International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD 2017), MP04, Copenhagen, Denmark (2017).

[76]        T. Numai, “High Resonance Frequency in a Coupled Cavity DFB-LD with Two Phase-Shifts by Photon-Photon Resonance,” 18th International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD 2018), WB6, Hong Kong, China (2018).

[77]        T. Numai, “High Resonance Frequency in a Coupled Cavity DFB-LD with Asymmetric Grating Coupling Coefficients by Photon-Photon Resonance, ”19th International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD 2019), MP14, Ottawa, Canada (2019).

[78]      T. Numai, “Over 100 GHz 3-dB down Bandwidth by Direct Modulation of a Coupled Cavity DFB-LD due to Photon-Photon Resonance,” 20th International Conference on Numerical Simulation of ptoelectronic Devices (NUSOD 2020), LD09, Torino, Italia (2020).

 

Technical Group Meetings of the Institute of Electronics and Communication Engineers of Japan (IECE), the Institute of Electronics, Information, and Communication Engineers of Japan (IEICE), the Japan Society of Applied Physics (JSAP), and the Institute of Television Engineers of Japan (ITEJ)

(Technical digests are written in Japanese)

 

[1]        M. Yamaguchi, T. Numai, Y. Koizumi, H. Nishimoto, S. Takano, and I. Mito, “Phase shifted DFB-DC-PBH LD in 1.55μm wavelength range,” IECE Tech. Rep., OQE86-150 (1986).

[2]      M. Nishio, S. Suzuki, T. Numai, M. Fujiwara, I. Mito, N. Shimosaka, and K. Kaede, “An experiment on optical wavelength-division switching using λ/4 DFB LD filters,” IEICE Tech. Rep., SE87-82 (1987).

[3]      T. Numai, S. Murata, M. Nishio, and I. Mito, “Semiconductor tunable wavelength filters,” IEICE Tech. Rep., OQE88-65 (1988).

[4]      M. Nishio, S. Suzuki, N. Shimosaka, T. Numai, T. Miyakawa, M. Fujiwara, and M. Itoh, “An experiment on photonic wavelength-division and time-division hybrid switching,” IEICE Tech. Rep., SSE88-189 (1988).

[5]      T. Numai, “Semiconductor Fabry Perot wavelength tunable filters,” JSAP Microoptics News, vol.7, No.4, pp.242-247 (1989).

[6]        H. Kosaka, T. Numai, I. Ogura, K. Kurihara, K. Yoshihara, Y. Yamanaka, M. Sugimoto, and K. Kasahara, “Improvement of vertical to surface transmission electro-photonic device (VSTEP) and its application to optical interconnection / optical processing,” IEICE Tech. Rep., OQE90-159 (1991).

[7]        K. Kasahara, I. Ogura, T. Numai, and M. Sugimoto, “Vertical to surface transmission electro-photonic device (VSTEP) for the application of optical interconnection and processing,” ITEJ Tech. Rep., vol.15, No.6, pp.19-24 (1991).

[8]        K. Kurihara, A. Yasuda, H. Kosaka, T. Numai, I. Ogura, M. Sugimoto, and K. Kasahara, “Vertical to surface transmission electro-photonic device with a vertical cavity,” IEICE Tech. Rep., OQE91-55 (1991).

[9]        M. Nishio, K. Takagi, S. Suzuki, I. Ogura, T. Numai, K. Kasahara, M. Itoh, H. Kohashi, and K. Kaede, “A study and an experiment on photonic ATM switch using VSTEPs,” IEICE Tech. Rep., SSE91-82 (1991).

[10]      M. Sugimoto, H. Saito, A. Yasuda, I. Ogura, K. Kurihara, H. Kosaka, T. Numai, and K. Kasahara, “Molecular beam epitaxy for surface emitting devices,” IEICE Tech. Rep., OQE91-181 (1992).

[11]      T. Numai, T. Kawakami, T. Yoshikawa, Y. Nambu, M. Sugimoto, Y. Sugimoto, H. Yokoyama, K. Kasahara, and K. Asakawa, “Airpost microcavity laser with low threshold current of 190 μA,” IEICE Tech. Rep., OQE93-101 (1993).

[12]      T. Numai, K. Kurihara, H. Kosaka, I. Ogura, M. Kajita, H. Saito, and K. Kasahara, “Control of light-output polarization for surface-emitting-laser type device by strained active layer grown on misoriented substrate,” IEICE Tech. Rep., OQE93-104 (1993).

[13]      M. Kajita, T. Numai, K. Kurihara, H. Saito, M. Sugimtoto, I. Ogura, H. Kosaka, and K. Kasahara, “Thermal analysis of laser-emission surface-normal optical devices with a vertical cavity,” IEICE Tech. Rep., OQE93-105 (1993).

[14]      Y. Ito, T. Tamo, and T. Numai, “Reduction of four wave mixing noises in FDM optical fiber transmission systems with quaternary bit-phase arranged RZ,” IEICE Tech. Rep., OCS2008-81, OPE2008-124, LQE2008-93 (2008).

[15]      H. Yoshida, N. Shomura, and T. Numai, “Semiconductor lasers with optical antiguiding layers for horizontal transverse modes,” IEICE Tech. Rep., LQE2008-135 (2008).

[16]      T. Nakamura and T. Numai, “Reduction of bandwidth and four-wave-mixing in FDM Lightwave transmission systems by frequency allocation with overlapped dual base units,” IEICE Tech. Rep., OCS2009-75, OPE2009-141, LQE2009-100 (2009).

[17]      T. Tamo and T. Numai, “Reduction of four-wave-mixing in FDM lightwave transmission systems by asymmetric repeated unequally spaced frequency allocations,” IEICE Tech. Rep., OCS2009-76, OPE2009-142, LQE2009-101 (2009).

[18]      T. Nishio and T. Numai, “Dependence of Total Bandwidth and Four-Wave-Mixing Noises in FDM Optical Fiber Transmission Systems on the Number of Base Units,” IEICE Tech. Rep., OCS2011-93 OPE2011-131, LQE2011-94 (2011).

[19]      M. Higaki and T. Numai, “Asymmetric Ridge-type Semiconductor Laser with a Selectively Formed Single-Sided Antiguiding Cladding Layer,” IEICE Tech. Rep., LQE2012-126 (2012).