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Alcatel Optronics Launches New Laser with Wavelength Monitoring Dedicated to 2.5, 10 and 40 Gbit/s DWDM Systems

Source: Compound Semiconductor Staff

Dallas, TX. Alcatel Optronics has introduced new fixed and tunable lasers with wavelength monitoring for operation up to 40 Gbit/s. The company s new CW laser integrating a wavelength monitoring function is the 1935 LMI. With an external modulator, this laser module is the ideal component for 2.5 Gbit/s, 10 Gbit/s and 40 Gbit/s long reach and very long reach DWDM transmissions. This high-performance laser module offers important gains in terms of DWDM systems space saving and cost reduction.

WDM transmission networks are becoming more and more dense, and channel spacing is being reduced. Therefore it is necessary to perfectly stabilize the wavelength emitted by the laser, whatever the conditions of use and for the entire life span of transmission systems. The wavelength stabilizing and monitoring functions were until today handled by specific separate components. Alcatel Optronics now offers a solution of an integrated module associating transmission laser and emitted wavelength control.

"This new laser demonstrates Alcatel Optronics advance in multiple-function optical and electrical integration inside a single package. As one of the first companies to launch this device, we reinforce our leadership in high-end optoelectronic components," said Philippe Brégi, chief operating officer of Alcatel Optronics. "Tomorrow, hybrid products will represent nearly the entire component market used in telecommunication systems over optical fiber."

The Alcatel 1935 LMI laser module covers C and L bands, with output power up to 20 mW. In a 14-pin butterfly standard package, it combines a laser chip, a Fabry-Perrot filter and two photodiodes precisely controlling the optical power and the wavelength emitted into the optical fiber. This integration offers space reduction on electro-optical boards and reduction of optical connections. The standardized module size and pin-out offer complete compatibility with standard continuous WDM lasers. Moreover, the choice of an air-gap Fabry-Perrot filter leads to very high wavelength stability, +/- 1.25 GHz, for an external temperature range from 0°C to 70°C.

DWDM Tunable Laser for 2.5 Gbit/s, 10 and Optical Networking System Applications

Alcatel has also extended the wavelength monitoring function to its new generation of continuous tunable lasers. Addressing eight different wavelengths with narrower channel spacing, this high-powered laser allows Wavelength Division Multiplexing (WDM) system designers to achieve significant gains in terms of flexibility, inventory management and cost reduction.

Responding to increasing bandwidth demand, WDM transmission networks are becoming more and more dense, quickly increasing the number of wavelengths on each optical fiber. WDM laser tunability covers different types of system manufacturers needs. Today, Alcatel Optronics is uniquely positioned to respond to spares management application, offering a single upgrade solution. To facilitate emission component management, Alcatel Optronics offers a continuous WDM laser, tunable over eight channels with 50 GHz spacing, to substitute existing lasers. It divides inventory of transmission boards by a factor of eight and drastically cuts maintenance costs, while guarantying the same level of performance.

"With this new tunable laser, Alcatel Optronics offers the perfect solution for today s tunability requirement, clearly targeting the WDM component spares market, the most important segment open to tunable lasers," said Philippe Brégi, chief operating officer of Alcatel Optronics. "Entirely compatible with current Distributed Feedback (DFB) lasers, this solution is original, simple and offers high-performance. Thus, we offer a unique performance-cost balance, appropriate to system manufacturers and their customer-operator needs."

Associated with an external modulator, the Alcatel 1935 TLI laser module is dedicated to 2.5 Gbit/s, 10 Gbit/s and 40 Gbit/s long reach and very-long reach WDM transmissions. It covers C and L bands, with output power up to 20 mW. In a 14-pin butterfly standard package, it combines a DFB laser chip, a Fabry-Perrot filter and two monitoring photodiodes. Wavelength tunability is achieved by modification of laser chip temperature. The standardized module size and pin-out offer complete compatibility with standard continuous WDM lasers.

About Alcatel Optronics Alcatel Optronics designs, manufactures and sells high performance optical components, modules and integrated sub-systems for use in terrestrial and submarine optical telecommunications networks. Operating state-of-the-art manufacturing plants in North America and Europe, Alcatel Optronics is a leading supplier of DWDM lasers, photodetectors, optical amplifiers, high-speed interface modules and key passive devices such as AWGs and Fiber Bragg Grating filters. A key player in the integration of sub-systems, Alcatel Optronics has strong expertise in Planar technology on Silicon substrate, the path to the future of hybridization of high-end active and passive components. The Optronics Division is part of Alcatel s Optics Group which comprises Alcatel s world-leading activities in optical networking, including submarine and terrestrial transmission systems, microwave radio links, fiber optics and optical components. For more information, http://www.alcatel.com/optronics.

Contact: Kerry Dixon Burson-Marsteller for Alcatel Tel: 212 614 5169 kerry_dixon@nyc.bm.com

Copyright: Franklin Publishing 2001

Kerry Dixon
Burson-Marsteller for Alcatel
Tel: 212 614 5169
kerry_dixon@nyc.bm.com
Copyright: Franklin Publishing 2001
E-mail: 5169kerry_dixon@nyc.bm.com
Web site: http://www.alcatel.com/optronics
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