Bookham Demos 40G Tunable Transmitter

SAN JOSE, Calif., Aug. 12 /PRNewswire-FirstCall/ -- Bookham, Inc. (NASDAQ: BKHM) has completed tier 1 customer demonstrations of its 40Gb/s ODQPSK tunable transmitter capability. The tunable transmitter assembly (TTA) is designed to meet price points that will enable cost-effective deployment of 40Gb/s transmission in Metro networks. The TTA has been demonstrated in the Bookham Caswell, UK, facility using cascaded DWDM nodes to reproduce real network conditions, and will be sampled into customer premises next month.

The TTA is underpinned by a single gold box co-packaging an indium phosphide Mach Zehnder modulator (InP MZ), measuring less than 10mm and believed to be the industry's smallest 40Gb/s modulator, and the LambdaFLEX(TM) DSDBR tunable laser. The TTA, implementing all required control circuitry including an OIF standard tunable laser interface, measures just 74mm x 39mm x 8.4mm, and is the first building block towards the Bookham 40Gb/s transponder.

The Bookham 40Gb/s portfolio of products utilizes the Optical Differential Quadrature Phase Shift Keying (ODQPSK) modulation scheme for 40Gb/s. The InP technology favoured by Bookham is well suited for such formats where integration of several modulators onto a single chip is a key enabler for space and cost reduction.

"These successful network simulation tests with our key customers are a big step forward for the Bookham 40Gb/s program, confirming the superior optical performance of ODQPSK modulation and its excellent adaptability to multiple fiber types," said PLM Director, Adam Price. "Through our vertical integration model we are proving that InP technology established by Bookham can provide the high performance needed for line side 40Gb/s optical networks, without the cost, power and size issues linked to less integrated transmitter and decoder solutions. This performance is targeted to be delivered at a price point that will see us create a real market for 40Gb/s in the Metro/Regional network, in line with service providers requirements.

"We believe our 40Gb/s TTA will be an economically compelling product for the players in this space," concluded Price.


     Contact Information:

     Julie Molloy            or    Howard Jones / Gemma Cann
     Bookham, Inc.                 BCS Public Relations
     +44 (0) 7967 223 448          +44 (0) 7980 772 285 / +44 (0) 115 948 6920  /

About Bookham

Bookham, Inc. is a leading provider of high performance optical products, spanning from components to advanced subsystems. The company designs and manufactures a broad range of solutions tailored for the telecommunications optical infrastructure and selected markets, including industrial, life sciences, semiconductor, and scientific. The Company utilizes proprietary core technologies and a vertically integrated manufacturing organization to provide its customers with cost-effective and innovative devices, as well as flexible, scalable product delivery. Bookham is a global company, headquartered in San Jose, Calif., with leading edge chip fabrication facilities in the UK and Switzerland, and manufacturing sites in the US and China.

Bookham and all other Bookham, Inc. product names and slogans are trademarks or registered trademarks of Bookham, Inc. in the USA or other countries.

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