光纤通信用波长调谐和单频激光管

Wavelength Tunable and Single Frequency Lasers for Use in Optical Fiber Communications

未来的光纤通信将需用多种新型的半导体激光管。在长途和市内线路,需用高速的单频激光管,而外差检测接收机的本地振荡器和分组交换的波长交换将使用波长调谐的激光管。本文扼要说明这些在长波长1.3～1.55μm工作的新型半导体激光管现在的技术水平及在未来光纤通信系统中的应用。

Future optical fiber telecommunication networks will require new types of semiconductor lasers. High speed single frequency lasers are needed for toll lines and local networks, while wavelength tunable lasers will be used for local oscillators in heterodyne receivers and wavelength switching in packet switches. This paper presents a brief review of the present status of these new semicondu■tor laser sources in the 1.3～1.55μm longwavelength region, with applications in the future broadband optical fiber transmission systems.