Chorum Technologies selected by TyCom to supply optical slicer filtering technology

Mar. 29, 2001--Chorum Technologies Inc., a provider of all-optical processors and subsystems in the fiber-optics market, announced it has signed a multiyear supply agreement to provide its PolarWave Optical Slicer filters to TyCom Ltd.

Chorum Technologies Inc., a provider of all-optical processors and subsystems in the fiber-optics market, announced it has signed a multiyear supply agreement to provide its PolarWave Optical Slicer filters to TyCom Ltd. (NYSE:TCM) (BSX:TCM). TyCom, a provider of advanced undersea fiber optics capacity, systems and services, will integrate Chorum Technologies' Optical Slicer filters into their Wavelength Termination Equipment.

Chorum Technologies' Optical Slicer filtering technology is based on the company's patented polarization processing and spectrum filtering techniques. The Optical Slicer filter is a passive device that combines or separates thousands of high-bandwidth optical channels onto and off a single fiber-optic strand, increasing the transmission carrying capacity and reducing the overall cost of fiber-optic telecommunications networks.

Chorum Technologies' family of PolarWave products includes optical filters, optical switches, optical processors and integrated optical subsystems. With Chorum's products, new optical networks can be built with thousands of optical channels that are dynamically routed, switched, provisioned, protected and restored all within the optical domain. Chorum's all-optical solutions eliminate costly and complex optical-to-electrical-to-optical conversions, increase the reliability and bandwidth of network and enable the creation of new wavelength services.

About Chorum Technologies:

Chorum Technologies Inc. is a provider of all-optical processors and subsystems in fiber-optics market. For more information, visit www.chorumtech.com.

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