Combined frequency and amplitude modulation for the STARNET WDM computer communication network
Abstract
STARNET is an experimental wavelength-division multiplexed computer communication network that makes use of combined modulation of a single transmitter laser to implement a virtual-ring control sub-network and a reconfigurable high-speed sub-network over a passive star architecture. In this letter, we demonstrate a new technique of combined modulation that works by direct frequency-shift keyed (FSK) modulation and external amplitude-shift keyed (ASK) modulation of a semiconductor laser. By adjusting the amplitude modulation depth to 0.8, both the 125 Mb/s ASK receiver and the 1.244 Gb/s FSK receiver operate with equal bit-error ratios less than 10(exp -9) for a received signal power of -24 dBm.
- Publication:
-
IEEE Photonics Technology Letters
- Pub Date:
- December 1994
- DOI:
- 10.1109/68.392207
- Bibcode:
- 1994IPTL....6.1473H
- Keywords:
-
- Amplitude Modulation;
- Architecture (Computers);
- Communication Networks;
- Computer Networks;
- Frequency Division Multiplexing;
- Frequency Modulation;
- Interprocessor Communication;
- Network Control;
- Optical Communication;
- Wavelength Division Multiplexing;
- Bit Error Rate;
- Frequency Shift Keying;
- High Speed;
- Semiconductor Lasers;
- Signal To Noise Ratios;
- Systems Analysis;
- Transmitters;
- Communications and Radar