- G.S.Pu, T.Mizumoto, Y.Sato, K.Ito and Y.Naito, "Numerical analysis of optical switching characteristics of tapered nonlinear directional coupler", IEICE Trans. Electron., vol.E77-C, No.9, pp.1489-1495 (1994)
- G.S.Pu, T.Mizumoto, K.Ito, Y.Higashide and Y.Naito, "Reduction of critical power in all-optical switching with series-tapered nonlinear directional coupler", IEICE Trans. Electron., vol.E78-C, No.9, pp. 1315-1318 (1995)
- K.Nakatsuhara, T.Mizumoto, R.Munakata and Y.Naito, "Weighted distributed feedback structure for all-optical bistable devices", Applied Optics, vol.35, No.9, pp.1507-1511 (1996)
- K.Nakatsuhara, T.Mizumoto, R.Munakata, Y.Kigure and Y.Naito, "All-optical set-reset operation in a distributed feedback GaInAsP waveguide", IEEE Photonics Technology Letters, vol.10, No.1, pp.78-80 (1998)
- K.Nakatsuhara, T.Mizumoto, E.Takahashi, S.Hossain, Y.Saka, B.J.Ma and Y.Nakano, "All-optical switching in a distributed-feedback GaInAsP waveguide", Applied Optics, vol.38, No.18, pp.3911-3016 (1999)
- K.Nakatsuhara, S.Hossain, T.Mizumoto, S.-H.Jeong, B.-J.Ma and Y.Nakano, "All-optical bistable switching in nonlinear directonal coupler loaded with Bragg reflector", Electronics Letters, vol.35, No.15, pp.1243-1244 (1999)
- K.Nakatsuhara, T.Mizumoto, S.Hossain, S.-H.Jeong, Y.Tsukishima, B-J.Ma and Y.Nakano, "GaInAsP/InP distributed feedback waveguides for all-optical switching", J. Selected Topics in Quantum Electronics, vol.6, No.1, pp143-149 (2000)
- S-H.Jeong, T.Mizumoto, K.Nakatsuhara, M.Takenaka and Y.Nakano, "Deep-ridge distributed feedback waveguide for polarization independent all-optical switching", Electronics Letters, vol.37, No.8, pp.498-499 (2001)
- S-H.Jeong, H.-C.Kim, T.Mizumoto, J.Wiedmann, S.Arai, M.Takenaka and Y.Nakano, "Polarization insensitive deep-ridge vertical-groove DFB waveguide for all-optical switching", Electronics Letters, vol.37, No.23, pp.1387-1389 (2001)
- S-H.Jeong, K.Nakatsuhara, T.Mizumoto, B.-J.Ma and Y.Nakano, "Dependence of threshold switching power on the control-light wavelength in a nonlinear distributed-feedback GaInAsP waveguide", Applied Optics, vol.40, No.33, pp.6042-6048 (2001)
- K.Nakatsuhara, T.Shirado, S.-H.Jeong, T.Mizumoto, M.Takenaka and Y.Nakano, "GaInAsP/InP directional coupler loaded with grating for optically-controlled switching", Trans. IEICE on Electronics, vol.E85-C, No.4, pp.1039-1045 (2002)
- S-H.Jeong, H.-C.Kim, T.Mizumoto, J.Wiedmann, S.Arai, M.Takenaka and Y.Nakano, "Polarization independent all-optical switching in a nonlinear GaInAsP/InP highmesa waveguide with vertically etched Bragg reflector," IEEE J. Quantum Electronics, vol.38, No.7, pp.706-715 (2002)
- S-H.Jeong, T.Mizumoto, M.Takenaka and Y.Nakano, "All-optical wavelength conversion in a GaInAsP/InP optical gate loaded with Bragg reflector," Applied Optics, vol. 42, No.33, pp.6672-6677 (2003)
- J.-K.Seo and T.Mizumoto, "Measurement of pump-induced absorption and refractive index changes in GaInAsP/InP waveguides using an optical loop mirror interferometer," Jpn. J. Applied Physics, vol. 43, No.8B, pp.5800-5804 (2004)
- J.-K.Seo and T.Mizumoto, "Nonlinear optical properties in GaInAsP/InP waveguides below the bandgap wavelength," Jpn. J. Applied Physics, vol.45, No.4A, pp.2612-2617 (2006)
- Yosia, Y.Akano, K.Tamura, T.Mizumoto, and S.Ping, "All-optical transistor operation based on the bistability principle in nonlinear distributed feedback GaInAsP-InP waveguide: a transient perspective," J. of Optical Society America B, vol.24, No.7, pp.1584-1588 (July, 2007)

- T.Mizumoto, I.Morita, Y.Ibusuki and Y.Naito, "Observation of Nonlinear Transmission in CdSxSe1-x doped glass waveguide optical resonators", 4-th Optoelectronics Conference (OEC '92), Makuhari, Technical Digest pp.116-117 (July, 1992)
- G.S.Pu, T.Mizumoto and Y.Naito, "Switching characteristics of a novel nonlinear tapered directional coupler", Progress in Electromagnetics Research Symposium (PIERS 1993), Pasadena, Technical Digest p.661 (July, 1993)
- G.Jin, T.Mizumoto, G.S.Pu and Y.Naito, "Characteristics of all-optical switching in intersecting waveguide", 5-th Optoelectronics Conference (OEC '94), Makuhari, Techincal Digest pp.286-287 (July, 1994)
- G.S.Pu, T.Mizumoto, Y.Sato, K.Ito and Y.Naito, "All-optical switching characteristics of tapered nonlinear directional coupler", 5-th Optoelectronics Conference (OEC '94), Makuhari, Techincal Digest pp.14-15 (July, 1994)
- T.Mizumoto, N.Kimura, S.Tonami and Y.Naito, "Enhanced third-order nonlinear susceptibility of semiconductor doped glass", CLEO Europe 94, Amsterdam, Technical Digest pp.225-226 (Sept., 1994)
- T.Mizumoto, Y.Ibusuki, K.Nakatsuhara and Y.Naito, "Waveguide optical bistable devices with weighted distributed feedback structure", CLEO Europe 94, Amsterdam, Technical Digest pp.354-355 (Sept., 1994)
- K.Nakatsuhara, T.Mizumoto, R.Munakata and Y.Naito, "Optical bistable devices controlled with pump beam feedback", 1-st Optoelectronics and Communications Conference (OECC'96), Makuhari, Technical Digest pp.446-447 (July, 1996)
- K.Nakatsuhara, T.Mizumoto, E.Takahashi and Y.Naito, "Optical bistability in nonlinear directional coupler with Bragg reflector", 2nd Optoelectronics and Communications Conference (OECC'97), Seoul, Technical Digest pp.22-23 (July, 1997)
- K.Nakatsuhara, T.Mizumoto, R.Munakata, Y.Kigure and Y.Naito, "Demonstration of all-optical set-reset operation in a GaInAsP waveguide bistable device", LEOS '97 10-th annual meeting, San Francisco, Conference Proceedings vol.1, pp.246-247 (Nov., 1997)
- K.Nakatsuhara, T.Mizumoto, E.Takahashi, H.Sainul, Y.Saka, B.J.Ma and Y.Nakano, "All-optical threshold operation in a GaInAsP waveguide with a Bragg reflector", 3rd Optoelectronics and Communications Conference (OECC'98), Makuhari, Technical Digest pp.130-131 (July, 1998)
- K.Nakatsuhara, T.Mizumoto, E.Takahashi, S.Hossain, Y.Saka, B.J.Ma and Y.Nakano, "Demonstration of all-optical switching in a GaInAsP distributed feedback waveguide", Nonlinear Optics '98, Princeville, Technical Digest pp.340-342 (Aug., 1998)
- K.Nakatsuhara, T.Mizumoto, E.Takahashi, S.Hossain, S.H.Jeong, B.J.Ma and Y.Nakano, "Nonlinear directional coupler loaded with Bragg reflector", LEOS '98 11-th annual meeting, Orlando, Conference Proceedings vol.1, pp.268-269 (Dec., 1998)
- K.Nakatsuhara, S.-H.Jeong, Y.Tsukishima, T.Mizumoto, B.-J.Ma and Y.Nakano, "All-optical threshold device and its application to AND", MOC'99, MJ-4, pp.316-319 (July 14-16, 1999)
- K.Nakatsuhara, S.-H.Jeong, Y.Tsukishima, T.Mizumoto, B.-J.Ma and Y.Nakano, "Demonstration of all-optical AND gate operation in a GaInAsP waveguide", CLEO Pacific Rim '99, Technical Digest, vol.3, ThM5, pp.704-705 (Aug.30-Sept.3, 1999)
- K.Nakatsuhara, S.Hossain, T.Mizumoto, S.-Jeong, B.-J.Ma and Y.Nakano, "All-optical switching in a nonlinear directional coupler loaded with Bragg reflector", ECOC '99, Conference Digest, vol.II, pp.174-175 (Sept. 26-30, 1999)
- K.Nakatsuhara, S.-H.Jeong, S.Hossain, T.Mizumoto, B.-J.Ma and Y.Nakano, "All-optical bistability in nonlinear directional coupler loaded with Bragg reflector", 1999 International Conference on Solid State Devices and Materials, Extended Abstracts, E-6-1, pp.280-281 (Sept. 1999)
- K.Nakatsuhara, S.-H.Jeong, Y.Tsukishima, T.Mizumoto, B.-J.Ma and Y.Nakano, "Demonstration of all-optical threshold operation in GaInAsP distributed feedback waveguides and its application to AND gate", APCC/OECC'99, Proceedings, Vol.2, pp.1568-1570 (Oct. 19-21,1999)
- S.-H.Jeong, T.Mizumoto, K.Nakatsuhara, B.J.Ma, and Y.Nakano, "Highmesa distributed feedback waveguide for polarization insensitive all-optical switching", 5th Optoelectronics and Communications Conference (OECC 2000), Technical Digest, 12C2-5, pp.158-159 (July 2000)
- S.-H.Jeong, K.Nakatsuhara, T.Mizumoto, B.J.Ma, and Y.Nakano, "Demonstration of all-optical switching with orthogonally-polarized control and signal light", Nonlinear Optics 2000, pp.165-167 (Aug.,2000)
- K.Nakatsuhara, T.Mizumoto, S.-H.Jeong, T.Shirado, B.J.Ma, and Y.Nakano, "All-optical switching characteristics in nonlinear directional coupler loaded with Bragg reflector", Nonlinear Optics 2000, pp.129-131 (Aug.,2000)
- S.-H.Jeong, T.Mizumoto, K.Nakatsuhara, B.J.Ma, and Y.Nakano, "Dependence of control light wavelength in all-optical switching of nonlinear strip-loaded distributed feedback waveguide", LEOS Annual Meeting 2000, Technical Digest, vol.2, pp.663-664, WEE4 (Nov.,2000)
- K.Nakatsuhara, S.-H.Jeong, T.Mizumoto, B.J.Ma, and Y.Nakano, "All-optical switching with separate wavelength for probe and control in nonlinear directional coupler loaded with Bragg reflector", LEOS Annual Meeting 2000, Technical Digest, vol.2, pp.698-699, ThC1 (Nov.,2000)
- T.Mizumoto, K.Nakatsuhara, S.H.Jeong, T.Shirado and Y.Nakano, "All-Optical Switching for Future Fiber-Optic Communication System", 2000 Asia-Pacific Symposium on Broadcasting and Communications (Dec., 2000)
- S.-H.Jeong, K.Nakatsuhara, T.Mizumoto, B.J.Ma, and Y.Nakano, "Demonstration of all-optical set-reset switching in a nonlinear rib waveguide loaded with Bragg reflector", Technical Digest of 4th International Topical Workshop on Contemporary Photonic Technologies (CPT2001), Tb-2, pp.59-60 (2001)
- S.-H.Jeong, T.Mizumoto, K.Nakatsuhara, M.Takenaka and Y.Nakano, "Nonlinear GaInAsP DFB waveguide for polarization independent all-optical switching", OECC/IOOC Conference Proceedings, TUP2, pp.253-255 (July 2001)
- K.Nakatsuhara, T.Mizumto, T.Shirado, S.-H.Jeong, M.Takenaka and Y.Nakano, "Demonstration of optically-controlled switching in nonlinear directional coupler loaded with grating", ECOC 2001 Conference Proceedings, We-P10 (Oct. 2001)
- S.-H.Jeong, T.Mizumoto, K.Nakatsuhara, M.Takenaka and Y.Nakano, "Nonlinear distributed feedback waveguide for polarization independent all-optical switching", 8-th Microoptics Conference (MOC'01), pp.174-177 (Oct. 2001)
- S.-H.Jeong, H.-C.Kim, T.Mizumoto, J.Wiedman, S.Arai, M.Takenaka and Y.Nakano, "Demonstration of Polarization Insensitive All-Optical Switching in a Highmesa Distributed Feedback Waveguide", CPT2002 Technical Digest, B-5, pp.31-32 (Jan., 2002)
- S.-H.Jeong, T.Mizumoto, H.-C.Kim, J.Wiedman, S.Arai, M.Takenaka and Y.Nakano, "Polarization independent all-optical switching employing nonlinear vertical-groove DFB waveguide", Optical Fiber Communication Conference (OFC2002), San Francisco, TuU3, pp.140-141 (March, 2002)
- S.-H.Jeong, T.Mizumoto, H.-C.Kim, J.Wiedman, S.Arai, M.Takenaka and Y.Nakano, "All-optical polarization independent switching in a nonlinear DFB waveguide with vertically etched grating," Conference on Lasers and Electro-Optics (CLEO 2002), Long Beach, CMB2, p.7 (May, 2002)
- S.-H.Jeong, T.Mizumoto, M.Takenaka and Y.Nakano, "All-optical wavelength conversion in a GaInAsP/InP nonlinear DFB-gate," 7th Optoelectronics and Communications Conference (OECC 2002), Yokohama, 12C3-5, pp.602-603 (July, 2002)
- S.-H.Jeong, T.Mizumoto, M.Takenaka and Y.Nakano, "GaInAsP/InP nonlinear strip-loaded DFB-Gate for All-optical wavelength conversion," Topical meeting on Photonics in Switching 2002 (PS2002), Cheju, PS.WeB6, pp.135-137 (July, 2002)
- S.-H.Jeong, H.-C.Kim, T.Mizumoto, J.Wiedmann, S.Arai, M.Takenaka and Y.Nakano, "Polarization independent switching characteristics in a passive highmesa waveguide with vertically etched Bragg reflector," Topical meeting on Photonics in Switching 2002 (PS2002), Cheju, PS.MoB5, pp.46-48 (July, 2002)
- J.-K.Seo, T.Mizumoto, M.Takenaka and Y.Nakano, "Measurement of intensity-dependent refractive index change using a loop mirror interferometer," 6th International Symposium on Contemporary Photonics Technology (CPT 2003), Tokyo, PDP-2, p.2 (Jan., 2003)
- J.-K.Seo, S.-H.Jeong, T.Mizumoto, M.Takenaka and Y.Nakano, "Measurement of intensity-dependent response of GaInAsP distribution feedback waveguide," 9th Microoptics Conference (MOC'03), Tokyo, H-39, pp.276-278 (Oct., 2003)
- J.-K.Seo, S.-H.Jeong, T.Mizumoto, M.Takenaka, and Y.Nakano, "Measurement of nonlinear response of GaInAsP DFB waveguide using a pump-probe method," 7th International Symposium on Contemporary Photonics Technology (CPT 2004), Tokyo, F-4, pp.127-128 (Jan., 2004)
- J.-K.Seo and T.Mizumoto, "Measurement of nonlinear index changes in an InGaAsP/InP waveguide using an optical loop mirror interferometer," Conference on Lasers and Electro Optics / International Quantum Electronics Conference (CLEO/IQEC 2004), San Francisco, CThJ5 (May 16-21, 2004)
- T.Mizumoto, J.-K.Seo, S.Arai, and Y.Nakano, "(Invited) All optical switching in GaInAsP/nP DFB waveguides," Integrated Photonics Research and Applications Topical Meeting (IPRA-2005), San Diego, ICM6 (April 11-13, 2005)
- J.-K. Seo, T. Ishii, T.Mizumoto, H. Yagi, D. Plumwongrot, and S. Arai, "Intensity-dependent refractive index changes below bandgap in quantum well and quantum wire GaInAsP waveguides," the 10th Optoelectronics and Communications Conference (OECC 2005), Seoul, 8E1-1, pp.836-837 (July 5-8, 2005)
- T.Mizumoto, J.-K.Seo, and N.Tanaka, "All-Optical Inverting Response in a GaInAsP/InP DFB Waveguide," 2005 IEEE LEOS annual meeting, Sydney, ML-6, pp.131-132 (Oct.24-27, 2005)
- J.-K.Seo, T.Ishii, T.Mizumoto, H.Yagi, D.Plumwongrot, and S.Arai, "Comparison of intensity-dependent index change below the bandgap wavelength among bulk, quantum well and quantum wire incorporated GaInAsP waveguides," the 11th Microoptics Conference (MOC'05), Tokyo, K6, pp.278-279 (Oct.30-Nov.2, 2005)
- T.Mizumoto, J.-K.Seo, K.Tamura, and Y.Akano, "All-optical switching in a GaInAsP DFB waveguide," International Conference on Computer and Devices for Communication (CODEC-06), Kolkata, OLT-27, p.187 (Dec.18-20, 2006)
- Y.Akano, K.Tamura, and T.Mizumoto, "Integrated all-optical inverting gate and bistable elements for optical Flip-Flop," 10th International Symposium on Contemporary Photonics Technology (CPT 2007), Tokyo, LM-21 (Jan.10-12, 2007)
- T.Mizumoto, Y.Akano, K.Tamura, and M. Yoshimura, "(Invited) DFB waveguide all-optical switching devices employing pump-induced refractive index change in GaInAsP," International Conference on Materials for Advanced Technologies 2007 (ICMAT 2007), Symposium-D, Singapore, DA-2-IN4 (July 2-6, 2007)
- M. Yoshimura and T. Mizumoto, "Short pulse propagation in DFB waveguides," the 13th Microoptics Conference (MOC' 07), Takamatsu, Japan, H83, pp.300-301 (Oct. 30, 2007)