Finisar and u2t Photonics capture 100G coherent modulator technology

Created September 13, 2013
Applications and Research

Finisar and u²t Photonics have gained exclusive use of indium phosphide-based modulator technology developed at the Fraunhofer Heinrich-Hertz-Institute (HHI).The two companies will also jointly develop the technology for transmitter designs at 100G and beyond.

Finisar and u²t immediately gain polarisation multiplexed I-Q modulator technology for 100Gbps coherent applications following the agreement. Meanwhile, u²t has also acquired the assets of COGO Optronics GmbH, the former German operating subsidiary of COGO Optronics. 

Finisar says it has worked with COGO since 2009 to commercialise HHI’s indium phosphide Mach-Zehnder modulator technology for several of its 40G and 100G transceivers.

The acquisition of COGO Optronics GmbH and the memorandum of understanding with Finisar and HHI further broadens u²t’s component portfolio. Known for its high-speed detectors and coherent receiver devices, u²t already has gallium arsenide modulator technology which it claims has a performance similar to a lithium niobate modulator yet is considerably smaller. 

Indeed u²t expects gallium arsenide’s power and size, along with the company’s coherent receiver, to fit within the CFP2 pluggable module. Such an optical module design could meet long-haul requirements. 

Indium phosphide modulators do not match the reach performance of gallium arsenide but they are even smaller. Such designs could serve metro applications yet fit within a CFP4 package.  Such compact line side designs will also be of key interest for Finisar

“We believe this new relationship with u²t and our joint exclusive access to HHI’s Mach-Zehnder modulator technology will enable the rapid development of new indium phosphide Mach-Zehnder modulators for next-generation 100G coherent long-haul line cards and pluggable 100G coherent metro transceivers,” said John Clark, Finisar‘s executive vice president for technology and global R&D.

By Roy Rubenstein

See Also: 
Press release: Finisar and  u²t Partner to Acquire Exclusive Access to 100G Coherent Modulator Technology
Gazettabyte: u²t Photonics pushes balanced detectors to 70GHz


This article was written
by Roy Rubenstein

is the editor of and has been researching and writing about the telecom and semiconductor industries for over 20 years.