VOL. E81-C NO.8 AUGUST 1998 =========================== @ == Special Issue on High-Capacity WDM/TDM Networks: Optical Devices and Their System Applications ============================================================================================== . FOREWORD ....................................................... 1157 Yuzo YOSHIKUNI and Katsumi EMURA INVITED PAPERS ============== [Photonic Networking] . Realizing the Vision of Multiwavelength Optical Networking ..... 1159 Richard E. WAGNER . Standardization Activities for Optical Networking Relevant Issues ....................................................... 1167 Kimio OGUCHI and Naohide NAGATSU INVITED PAPER ============= [Passive Devices for Photonic Networks] . Silica-Based Planar Lightwave Circuits for WDM Applications .... 1176 Katsunari OKAMOTO, Yasuyuki INOUE, Takuya TANAKA, and Yasuji OHMORI PAPERS ====== . Athermal Narrow-Band Optical Filter at 1.55m Wavelength by Silica-Based Athermal Waveguide ................................ 1187 Yasuo KOKUBUN, Shigeru YONEDA, and Shinnosuke MATSUURA . Polarization Independent Semiconductor Arrayed Waveguide Gratings Using a Deep-Ridge Waveguide Structure ......................... 1195 Masaki KOHTOKU, Hiroaki SANJOH, Satoshi OKU, Yoshiaki KADOTA, and Yuzo YOSHIKUNI . Optical Add/Drop Filter with Flat Top Spectral Response Based on Gratings Photoinduced on Planar Waveguides ..................... 1205 Hisato UETSUKA, Hideaki ARAI, Korenori TAMURA, Hiroaki OKANO, Ryouji SUZUKI,and Seiichi KASHIMURA . Optimization of Fiber Bragg Grating for Dense WDM Transmission System ......................................................... 1209 Akira INOUE, Toru IWASHIMA, Tadashi ENOMOTO, Shinji ISHIKAWA, and Hiroo KANAMORI INVITED PAPER ============= [Active Devices for Photonic Networks] . Wide-Wavelength-Range Modulator-Integrated DFB Laser Diodes Fabricated on a Single Wafer ................................... 1219 Masayuki YAMAGUCHI, Koji KUDO, Hiroyuki YAMAZAKI, Masashige ISHIZAKA,and Tatsuya SASAKI PAPER ===== . Precisely Wavelength-Controlled Corrugation for DFB Laser Diodes Delineated by Weighted-Dose Electron-Beam Lithography .......... 1225 Yoshiharu MUROYA, Kenji SATO, Tetsuro OKUDA, Takahiro NAKAMURA, Hirohito YAMADA, and Toshitaka TORIKAI INVITED PAPER ============= . MQW Electroabsorption Optical Gates for WDM Switching Systems .. 1232 Mari KOIZUMI and Tatemi IDO PAPERS ====== . Polarization Independent Semiconductor Optical Amplifier Gate and Its Application in WDM Systems ................................. 1237 Toshio ITO, Naoto YOSHIMOTO, Osamu MITOMI, Katsuaki MAGARI, Ikuo OGAWA,Fumihiro EBISAWA, Yasufumi YAMADA, and Yuji HASUMI . Double-Pass EA Modulator Array Monolithically Integrated with Passive-Waveguide .............................................. 1245 Koji YAMADA, Koji NAKAMURA, and Hideaki HORIKAWA . Novel Wavelength Converter Using an Electroabsorption Modulator 1251 Noboru EDAGAWA, Masatoshi SUZUKI, and Shu YAMAMOTO . Wavelength Insensitive Tunable Wavelength Conversion Using Cascaded Semiconductor Lasers ........................................... 1258 Hiroaki SANJOH, Hiroyuki ISHII, Hiroshi YASAKA, and Kunishige OE INVITED PAPERS ============== [WDM/TDM Transmission and Related Technologies] . WDM Transmission Technologies for Dispersion-Shifted Fibers .... 1264 Masahiko JINNO, Masaki FUKUI, Tadashi SAKAMOTO, Shigeki AISAWA, Jun-ichi KANI,and Kimio OGUCHI . Wavelength Division Multiplexing Technology for Undersea System Applications ................................................... 1276 Hidenori TAGA, Noboru EDAGAWA, Masatoshi SUZUKI, and Shu YAMAMOTO PAPERS ====== . Gain-Flattened Hybrid Silica-Based Er-Doped Fiber Amplifiers Designed for More Than 25nm Optical Bandwidth .................. 1285 Motoki KAKUI, Tomonori KASHIWADA, Masayuki SHIGEMATSU, Masashi ONISHI,and Masayuki NISHIMURA . Gain Equalizer in Long-Haul WDM Transmission System ............ 1293 Takao NAITO, Naomasa SHIMOJOH, Takafumi TERAHARA, Terumi CHIKAMA,and Masuo SUYAMA INVITED PAPER ============= . High Speed OTDM Networks Employing Electro-Optic Modulators .... 1301 Andrew D. ELLIS, Terry WIDDOWSON, Ian D. PHILLIPS, and William A. PENDER PAPERS ====== . 40 Gbit/s Single-Channel Soliton Transmission Using Periodic Dispersion Compensation ........................................ 1309 Itsuro MORITA, Masatoshi SUZUKI, Noboru EDAGAWA, Keiji TANAKA, and Shu YAMAMOTO . 40-Gbit/s Ti:LiNbO3 Optical Modulator with a Two-Stage Electrode ....................................................... 1316 Kazuto NOGUCHI, Hiroshi MIYAZAWA, and Osamu MITOMI . Microwave Attenuation Reduction Techniques for Wide-Band Ti:LiNbO3 Optical Modulators ............................................. 1321 Rangaraj MADABHUSHI SURVEY PAPER ============ [Technology Roadmap] . Optical Communications Technology Roadmap ...................... 1328 Keijiro HIRAHARA, Toshio FUJII, Koji ISHIDA, and Satoshi ISHIHARA Regular Section =============== PAPERS ====== [Opto-Electronics] . Dynamic Analysis of Widely Tunable Laser Diodes Integrated with Sampled- and Chirped-Grating Distributed Bragg Reflectors and an Electroabsorption Modulator .................................... 1342 Byoung-Sung KIM, Youngchul CHUNG, and Sun-Ho KIM [Microwave and Millimeter Wave Technology] . Macroscopic Method of Quantization of Evanescent Electromagnetic Fields with Taken into Account of Medium Dispersion ............ 1350 Masahiro AGU and Jingbo LI [Electromagnetic Theory] . Wedge-Supported Cylindrical Microstrip Lines with an Indented Ground ....................................................... 1358 Jean-Fu KIANG, Chung-I G. HSU, and Ching-Her LEE LETTER ====== [Microwave and Millimeter Wave Technology] . Superconducting Coplanar Filters with Attenuation Poles ........ 1366 Tomohiko KANEYUKI, Haruichi KANAYA, and Ikuo AWAI . ABSTRACTS (IEICE Trans., Vol.J81-C-I, Vol.J81-C-II, No.8 in Japanese) ...................................................... 1368