GTRAN Announces the First OC-768 Integrated MUX/CMU and DMUX/CDR Chipset
GTRAN Offers High-Performance 40Gb/s Digital IC s Implemented in a Commercial Indium Phosphide (InP) Process
Newbury Park, CA. GTRAN, Inc. announced today that it has significantly expanded its 40G chipset offering in the marketplace. It has successfully developed a 4:1 MUX/CMU, a 1:4 DMUX/CDR, and a widely tunable VCO for the OC-768 SONET applications. These chips represent, at such high data rates, the first monolithic integration of a multiplexer (MUX) and a clock-multiplying-unit (CMU); a demultiplexer (DMUX) and a clock-data-recovery (CDR) circuit.
As is the case for OC-192, such highly integrated IC s provide low-power, high-performance, small-size overall system solutions that are essential for implementation of commercially viable OC-768 systems and sub-systems. Earlier this year, GTRAN shipped 40Gb/s transimpedance amplifiers (TIA) and limiting amplifiers (LA), being the first to provide 40Gb/s products for SONET applications. These IC s compliment the 40G chipset solution. Implemented utilizing GTRAN s recently released 200GHz Indium Phosphide based wafer fabrication process, these IC s demonstrated that the process is consistent with the circuit requirements in terms of yield, performance, and power dissipation.
The 4:1 MUX combines 4 10Gb/s inputs into a 40Gb/s output, and the integrated CMU aligns the on-chip VCO to a system frequency reference signal. The DMUX splits the 40Gb/s input to 4 10Gb/s outputs, and the on-chip CDR recovers the clock/data from the incoming 40Gb/s input for the DMUX function. The DMUX also incorporates a post-amplifier at the input to achieve high input sensitivity. All high-speed I/O s employ differential signaling for easy interface to other components. Operating with a single -4.2V supply, the MUX chip dissipates 2.5W, and the DMUX dissipates about 3W. Both the 4:1 MUX and the 1:4 DMUX operate beyond 43 Gb/s, covering both standard and FEC rates.
Implemented with a unique resonator design, the VCO is widely tunable from 38GHz to 51GHz with low phase noise. The tuning frequency encompasses the basic OC-768 rate to strong FEC rate, enabling a single MUX/DMUX design for all applications. Operating from a single -4.2V supply, the VCO core dissipates a mere 100mW.
These IC s are housed in connectorized packages with high-speed feedthroughs to allow easy device characterization and integration. These IC s are also available in die form for customers who prefer to do their own integration.
Success of these chips once again demonstrates GTRAN s commitment to addressing the OC-768 market needs and our expertise in ultra-high speed opto- electronic IC designs, said Dr Frank Lee, Chief Executive Officer of GTRAN Inc. we are now one step closer to attaining the fully integrated OC-768 transponder solution
About GTRAN, Inc. GTRAN, Inc. (www.gtran.com) is a leading supplier of OC-192 and OC-768 transponder, opto-electronic integrated circuits and optical component solutions for the optical communication markets. The company has design and manufacturing locations in Newbury Park, California and Beijing, China
Contact: Connie Cheng of GTRAN, Inc. Tel: 818-889-2308, ext.34 connie@gtran.com
Connie Cheng of GTRAN, Inc.Tel: 818-889-2308, ext.34
connie@gtran.com
E-mail: connie@gtran.com
Web site: http://www.gtran.com
