Gigabit/s Optical Receiver Sensitivity and Zero-Dispersion Single-Mode Fiber Transmission at 1.55 µm

High-speed pulse response and receiver sensitivity at 1.55 µm were measured at data rates ranging from 400 Mbits/s to 2 Gbits/s, in order to elucidate characteristics of a reach-through p/sup +/nn/sup -/ Ge APD. The p/sup +/nn/sup -/ Ge APD receiver provided a 2 Gbit/s received optical power level of -32.0 dBm at 1.55 µm and a 10/sup -9/ error rate, which was 4 dB better than the receiving level with a p/sup +/n Ge APD. Detector performance at 1.3 µm was also studied for comparison with performance at 1.55 um. Single-mode fibers, which have 0.54 dB/km loss and zero dispersion at 1.55 µm, and an optical transmitter-receiver, whose repeater gain is 29.2 dB, have enabled 51.5 km fiber transmission at 2 Gbits/s. The transmission system used in this study has a data rate repeater-spacing product of 103 (Gbits/s) /spl dot/ km at 1.55 µm. Optical pulse broadening and fiber dispersion were also studied, using 1.55 and 1.3 µm dispersion free fibers. Future repeater spacing prospects for PCM-IM single-mode fiber transmission systems are discussed based on these experimental results.

[1]  G. Großkopf,et al.  Dark current noise characteristics and their temperature dependence in germanium avalanche photodiodes , 1981 .

[2]  T. Mukai,et al.  800 Mbit/s optical transmission experiments with dispersion-free fibres at 1.5 μm , 1980 .

[3]  H. Nagai,et al.  InP/GaInAsP Buried Heterostructure Lasers of 1.5 µm Region , 1980 .

[4]  Iwao Hatakeyama,et al.  Fusion splices for single-mode optical fibers (A) , 1978 .

[5]  J. Yamada,et al.  Characteristics of Gbit/s optical receiver sensitivity and long-span single-mode fiber transmission at 1.3 µm , 1982 .

[6]  H. Nagai,et al.  Modulated single-longitudinal mode semiconductor laser and fiber transmission characteristics at 1.55 µm , 1981, IEEE Journal of Quantum Electronics.

[7]  Fumio Koyama,et al.  Single-wavelength operation of 1.53 μm gainasp/inp buried-heterostructure integrated twin-guide laser with distributed bragg reflector under direct modulation up to 1 ghz , 1981 .

[8]  N. Imoto,et al.  Characteristics of dispersion free single-mode fiber in the 1.5 µm wavelength region , 1980, IEEE Journal of Quantum Electronics.

[9]  H. Ando,et al.  Characteristics of germanium avalanche photodiodes in the wavelength region of 1-1.6 µm , 1978, IEEE Journal of Quantum Electronics.

[10]  J. Yamada,et al.  Characteristics of a hemispherical microlens for coupling between a semiconductor laser and single-mode fiber , 1980, IEEE Journal of Quantum Electronics.

[11]  Osamu Mikami,et al.  1.55 µm GaInAsP/InP Distributed Feedback Lasers , 1981 .

[12]  D. Gloge.  Weakly guiding fibers. , 1971, Applied optics.

[13]  Masao Kawachi,et al.  Low-Loss single-mode fibre at the material-dispersion-free wavelength of 1.27 μm , 1977 .

[14]  T. Miya,et al.  Ultimate low-loss single-mode fibre at 1.55 μm , 1979 .

[15]  Kazuhiro Daikoku,et al.  A proposal on optical fibre transmission systems in a low-loss 1.0–1.4 μm wavelength region , 1977 .

[16]  Yoshio Noguchi,et al.  CW operation of DFB-BH GaInAsP/InP lasers in 1.5 μm wavelength region , 1982 .

[17]  H. Ando,et al.  Shallow‐junction p+‐n germanium avalanche photodiodes (APD’s) , 1979 .

[18]  D. Gloge,et al.  Dispersion in weakly guiding fibers. , 1971, Applied optics.

[19]  Mitsuho Yasu,et al.  VAD single mode fibre with 0.2 dB/km loss , 1981 .

[20]  D. Payne,et al.  Zero material dispersion in optical fibres , 1975 .

[21]  S. Personick.  Receiver design for digital fiber optic communication systems, II , 1973 .

[22]  Shinji Tsuji,et al.  Fabrication and characterization of narrow stripe InGaAsP/InP buried heterostructure lasers , 1980 .

[23]  Takaaki Mukai,et al.  Long-span single-mode fiber transmission characteristics in long wavelength regions , 1980 .

[24]  J. Yamada.  Simple dispersion measurement of a long-span, single-mode fibre using the longitudinal mode spacing of a semiconductor laser , 1982 .