Nd: Y AG Light Source and External Modulator for A VSB-AM Video Transmitter: A Performance Evaluation (1990)
By Y. Trisno and D. Grubb Ill, General Instrument Corporation
A miniature Nd: Y AG laser and an intensity modulator based VSB-AM video signal transmitter is described. With a light source having RIN level below -170 dB/Hz, the system allows a relatively low modulation index to be used. For a 40 channel system using a standard MZ, a CTB = 60 dB corresponds to ID;= 1%. With 75 mW Nd:YAG laser source, a system with power budget of 5.5 dB and SO dB CNR is realizable. Several promising techniques of modulator linearization are also given.
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