Abstract

To enable widespread use of single-mode fiber (SMF) optical subscriber loops, multiple services such as voice, data, and video must be offered at low cost and be highly reliable.¹ Multichannel wavelength division multiplexing (WDM) systems using lasers for compact disks (CD LD) are the most cost-effective.^2-4 This paper reports on a three-channel (780-, 1310-, 1550-nm) transmitter/receiver WDM module for SMF, which integrates an LD transmitter, a PIN PD receiver, and a preamplifier. The module features a low cost design incorporating the CD LD and an easy assembly method, highly reliable because of adopting a noble laser welding method.

© 1990 Optical Society of America