Optimization of pulse position modulation when using a cavity-dumped Nd:YAG laser

摘要

Abstract: Optimization of a laser communication system that uses pulse position modulation (PPM) of a cavity-dumped Nd:YAG laser was investigated analytically. Net communication efficiency, which is a product of PPM efficiency and laser efficiency, was shown to optimize at M-ary pulse formats in the range of 4 bits/pulse when communicating at rates of 4 to 12 Mb/s. The small number of bits/pulse optimizes the efficiency of a cavity-dumped laser by maintaining its pulse rate constant within a narrow range. !3