Abstract

The routing of central office (CO) traffic in a survivable ring network requires system bit rates at or beyond OC-48 (2.5 Gbit/s) to accommodate a large number of COs in a fast growing SONET network. A recent Bellcore study suggests increasing the system operation bit rate to OC-96 (5 Gbit/s) or OC-192 (10 Gbit/s) for potential cost savings, ease of maintenance, and system survivability.¹ The design of high-speed optical receivers for SONET lightwave systems of 2.5-10 Gbit/s is a challenging task. Ideally, the receiver should be highly integrated, with differential operation throughout to minimize common-mode noise and power supply fluctuations, and reduce the sensitivity penalty due to parasitic feedbacks.

© 1992 Optical Society of America