Tunable optical transmitter boasts small size - Embedded.com

Tunable optical transmitter boasts small size

Milpitas, Calif.—JDSU has created what it is touting as the world's smallest widely tunable transmitter optical subassembly (TOSA) for the dense wavelength division multiplexing (DWDM) transceiver market.

The TOSA brings full band tunability, or the ability for service providers to change to any wavelength on demand, to pluggable small form factor (XFP) transceivers that previously only supported one to two wavelengths.

In addition, the tunable TOSA will enable service providers to use pluggable small form factor products to support 50GHz channel spacing in metro area networks, as traffic continues to grow in this area due to increased use of voice, video and data applications among consumers.

The TOSA houses JDSU's Integrated Laser Mach Zehnder (ILMZ) chip that was announced in September 2007. The ILMZ is a photonic integrated circuit (PIC) that combines a tunable laser and optical modulator on a tiny chip for smaller, higher performance tunable solutions.

TOSAs reside within optical transceivers, the key interface to optical networks that convert electrical data to optical signals and back again as they travel through DWDM networks.

JDSU will offer transceiver products leveraging the TOSA package to the market later this year.

JDSU, www.jdsu.com

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