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16 March 2007


Bookham’s iTLA supports 40Gb/s DWDM transmission systems 

Optical components, modules and subsystems supplier Bookham Inc has announced that its LambdaFLEXTM integrable Tunable Laser Assembly (iTLA) is now being used to support 40Gb/s DWDM transmission systems.

According to the company, the iTLA can support all data rates up to 40Gb/s, and has already been used in systems supporting 10Gb/s and below. It has now been selected for use in 40Gb/s transmission systems, including the Mintera MI 40000XS next-generation subsystem for DWDM optical transport in metro, regional and ultra long-haul telecom networks.  
"The Bookham iTLA has proved extremely effective in our next-generation 40Gb/s DWDM optical transmission systems,” said Bryan Siegal, VP operations and customer satisfaction at Mintera.  “We are very satisfied with the optical performance of the Bookham iTLA.  It has provided us with a reliable, high performance laser source.  The product’s mechanical design means that it is easy to assemble, requiring no additional parts, thereby reducing the bill of materials.  The full C band coverage has simplified our planning and inventory requirements."

Jon White, Bookham’s product line manager for tunable sources, said: “The Bookham iTLA has been designed to be a common base technology to enable bit rates up to and through 40Gb/s. This approach has enabled us to provide a very cost-effective solution for our higher bit rate customers without the need for further design changes.”

With fast tuning speed to enable reconfigurable network features, the iTLA is fully-qualified and in volume production at Bookham’s facility in Shenzhen, China.  Based on the OIF MSA outline, the full-band tunable laser is supplied in module form, with control electronics and firmware.  The product provides a number functions, such as narrow line width, internal frequency dither generation, direct input path for transmitter trace tone functionality, dark tuning, field programmable firmware, adjustable power and full C or L band coverage. Bookham also offers custom iTLA designs.

Bookham’s tunable laser is built on a single InP optical chip, the DS-DBR, with no moving parts. It enables fast wavelength tuning with excellent reliability, comparable to that offered by legacy DFB lasers, says the company.

Bookham’s iTLA, and the company’s full tunable portfolio, can be seen on stand number 2125 at OFC/NFOEC, which take place in Anaheim, California, between 27-29 March 2007.