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一、引言以 GaAlAs/GaAs 激光器作光源、雪崩光电二极管作探测器的波长0.8微米的光纤通信,目前几乎已处于实用阶段。另一方面,在光纤损失极低且无分散的波长范围(1.0～1.7微米)内的光源和探测器的研究还比较新,是近年来研究工作不断取得积极进展的一个领域。作为光源,已研制了在1.3微米振荡且寿命超过一万小时的 InGaAsP/InP 系统的激光器,显示了光明的前景,但在探测器方面还有许多问题,尚未得到
I. Introduction GaAsAs / GaAs lasers as the light source, avalanche photodiode detector for the wavelength of 0.8 micron optical fiber communication, is now almost in practical stage. On the other hand, the research on light sources and detectors in the extremely low fiber loss and non-dispersion wavelength range (1.0-1.7 μm) is relatively new and one area where the research work has made continuous positive progress in recent years. As a light source, lasers having an InGaAsP / InP system oscillating at 1.3 μm and having a lifetime of more than 10,000 hours have been shown to have a bright future, but there are still many problems with the detectors that have not yet been obtained