Title :
A low-cost multichannel optical transmission system for video signals
Author :
Van den Broeke, L. A Dick ; de Jong, Leo P. ; Davidse, Jan ; Van Roermund, Arthur H M
Author_Institution :
Dept. of Electr. Eng., Delft Univ. of Technol., Netherlands
fDate :
9/1/1995 12:00:00 AM
Abstract :
A novel low-cost multichannel optical transmission system for video signals is described. The system uses time-division multiplex pulse-position modulation (TDPPM). The transmitter and receiver are realized in a standard bipolar process while an external low-cost laser and PIN photodiode are used. A maximum of 16 channels can be multiplexed, while achieving a weighted signal-to-noise ratio (SNR) of 54 dB, a differential gain of 1% and a differential phase of 0.5°. For a launched power of 0 dBm (pulse amplitude), the optical budget for a 45 dB weighted SNR exceeds 20 dB. Besides video signals the system is also capable of handling other signals such as digital coded audio signals or computer data. The feasibility of a four-channel system has been confirmed by measurements
Keywords :
optical fibre networks; optical modulation; optical receivers; optical transmitters; p-i-n photodiodes; pulse position modulation; semiconductor lasers; telecommunication channels; time division multiplexing; video coding; visual communication; 45 dB; 54 dB; PIN photodiode; SNR; TDPPM; bipolar process; computer data; differential gain; differential phase; digital coded audio signals; four-channel system; launched power; low-cost laser; low-cost multichannel optical transmission system; measurements; optical budget; pulse amplitude; receiver; time-division multiplex pulse-position modulation; transmitter; video signals; weighted SNR; weighted signal-to-noise ratio; Application software; Costs; Digital systems; Optical fiber devices; Optical modulation; Optical pulses; Optical receivers; Optical transmitters; Pulse modulation; Signal to noise ratio;
Journal_Title :
Communications, IEEE Transactions on
