HBT ICs FOR OC-192 EQUIPMENT
Heterojunction bipolar transistor (HBT) integrated circuits are just beginning to appear on the commercial market, mostly as small-scale microwave and broadband parts. The high-speed portion of Nortel's OC-192 fiber communications product makes extensive use of this new technology, and this article describes the rationale for using HBT ICs in such a system, and the philosophy behind HBT IC introduction.