Future multichannel coherent fiber optic systems will most likely employ optical amplifiers as repeaters and/or signal boosters.1 Such systems will experience an additional crosstalk due to the amplifiers and will therefore need increased channel spacing compared to non-amplifier multichannel systems. Also, in low or medium bit rate applications, the coherent system would probably experience a penalty due to the non-negligible linewidths of the source and local oscillator (LO) lasers.2 This paper presents an experimental study of the crosstalk and channel spacing in a 150 Mb/s two-channel ASK system using a semiconductor laser amplifier and 1.55 μm DCPBH-DFB lasers.

© 1988 Optical Society of America

PDF Article


You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
Login to access OSA Member Subscription