Digital fiber optic communication systems with study emphasis on the receiver end
Abstract
Digital fiber optic communication system optimum performance was examined. On the receiver side, line codes and low noise front end amplifiers were studied. Circuits for signal and clock regeneration, for gain control of the photodiode, and for demultiplexing were designed, realized, and investigated for use at 1 Gbit/sec. Receivers for 140 Mbit/sec, 280 Mbit/sec, and 1 Gbit/sec were built and optimized. For the transmitter, 4 x 250 Mbit/sec to 1 Gbit/sec multiplexers and laser drivers, having rise times below 200 psec were developed. A laser control circuit was fabricated and investigated at 1 Gbit/sec. The Gbit/sec circuits, using hybrid integrated thin film technology, were simulated by a digital computer. Error rate measurements were carried out at 1 Gbit/sec over a 1.6 km single-mode fiber. For a bit error rate of 10 to the -9th power, an average input power of -30.8 dBm is shown.
- Publication:
-
Final Report Apr. 1980 AEG-Telefunken
- Pub Date:
- January 1982
- Bibcode:
- 1982aegt.rept.....B
- Keywords:
-
- Digital Systems;
- Fiber Optics;
- Optical Communication;
- Preamplifiers;
- Pulse Communication;
- Signal Reception;
- Amplifiers;
- Computerized Simulation;
- Hybrid Circuits;
- Lasers;
- Pulse Code Modulation;
- Thin Films;
- Transmission Efficiency;
- Optics