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Product category: Optoelectronic Sensors, Switches and Receivers
News Release from: Bookham | Subject: ATV10GC
Edited by the Electronicstalk Editorial Team on 07 September 2004

Optical receiver integrates overload
protection

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Bookham Technology will launch the industry's first integrated solution for optical receiver overload protection that meets ITU and IEEE standards GR-253-CORE and G.959.1 at ECOC 2004.

Bookham Technology will launch the industry's first integrated solution for optical receiver overload protection that meets ITU and IEEE standards GR-253-CORE and G.959.1 at the 2004 European Conference on Optical Communication (ECOC) The integrated ATV10GC receiver is one-quarter of the size - and has half the electrical power consumption and about half the cost - of competing discrete devices, and is specifically designed for use by systems vendors within the widely used industry-standard 300-pin transponder package

The new receiver is currently the only device of its kind available in the surface mount coplanar MSA form factor, with an integrated micro-electromechanical system (MEMS) variable optical attenuator (VOA) to control the optical power reaching the avalanche photodiode (APD) optical receiver.

The result is a complete receiver that is small and easy to use.

"Integration is the key because it gives you a combination of size and power consumption benefits that cannot be achieved by other means", says Roger Harley, Bookham's Marketing Director for Discrete Active Components.

"It provides the receiver with the ability to withstand high optical power levels, which has become absolutely crucial to system vendors now, given the ITU and IEEE standards for APD protection.

"The ATV10GC receiver is designed to withstand +10dBm overload, a +5dBm margin over the ITU requirement".

"The VOA also allows the optical signal to be adjusted dynamically to enable the receiver to always operate within its optimum range".

The ATV10GC receiver consists of an avalanche photodiode, a low-noise preamplifier, a MEMS VOA, for which patents have been applied, and a precision negative temperature coefficient (NTC) thermistor in a hermetic coplanar package with a single-mode fibre pigtail.

Differential outputs are provided to improve noise rejection for enhanced sensitivity.

The receiver is optimised for use in 10Gbit/s dense wavelength division multiplexing (DWDM) metro or regional metro applications - either as a discrete device or within a transponder - using non-return-to-zero (NRZ) modulation, with or without forward error correction (FEC), at datarates up to 10.7Gbit/s.

The product is now available in sample quantities, with high volume shipments beginning in January 2005.

Telcordia GR-468-CORE qualification is underway, and the MEMS die, APD die and transimpedance amplifier die are already fully qualified.

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