CAMARILLO, Calif.--Vitesse Semiconductor Corp. today announced availability of its first indium-phosphide (InP) circuits for OC-192 and OC-768 communications systems, which operate at 10 and 40 gigabits per second, respectively. The InP process, called VIP-1, produces 0.8-micron feature sizes on 4-inch diameter wafers.
Last spring, Vitesse announced development of physical-layer (PHY) devices based on InP heterojunction bipolar transistors (HBTs) (see May 30 story), and in the summer, it began offering InP foundry services at a 4-inch wafer fab in Camarillo (see Aug. 6 story).
With the InP HBT process in production, Vitesse said it is now announcing am OC-768 chip set made up of seven ICs. The initial 40-Gbit/sec. chip set includes: a transimpedence amplifier (TIA VSC4020); a post amplifier or limiting amplifier (PA VSC4040); a photodiode (PIN) optical detector (VSC4085); a 2:1 and 4:1 multiplexer (VSC4001/05); and a 2:1 and 4:1 demultiplexer (VSC4002/06).
Vitesse said it is now working on higher levels of integration for OC-768 components and chip sets, with additional products scheduled to be introduced in early 2002. The company also plans to use the VIP-1 InP process to produce monolithic ICs for the receive side of an OC-768 transponder in 2002.
In addition to the OC-768 products, Vitesse also announced availability of two InP-based OC-192 devices: a PIN detector (VSC7985), and a monolithically integrated PIN detector and TIA (VSC7987). The VSC7987 is the first in a series of optoelectronic integrated circuits and photonic integrated circuits using the VIP-1 process, said the company.
"The monolithic integration of optoelectronic integrated circuits is essential to reduce system cost at both the circuit level and at the module level where--with a 16:1 monolithically integrated transponder--all data rates in excess of OC-48 (2.5Gb/s) are contained on the IC and do not have to propagate on the circuit board," said Alan Huelsman, director of the InP program at Vitesse.
Prices range from $400 for the OC-768 transimpedance amplifier die to $80 for the OC-192 photodiode in 1,000-unit quantities.