March 14, 2002-- Essex Corp. (www.essexcorp.com) and Fiberspace, Inc. (www.fiberspace.net) today announced the signing of a memorandum of understanding (MOU) to co-market the Essex hyperfine WDM technology and Fiberspace's Gridlocker laser source, based on the company's patented Optical Phase Locked Loop (OPLL) stabilization technology. Under the terms of the MOU, the companies will integrate marketing efforts for these technologies, such as making joint presentations, integrated demonstrations, and writing co-authored technical papers for publication.

"Gridlocker is the only commercially developed laser that most appropriately meets the requirements of our hyperfine WDM technology," remarked Len Moodispaw, CEO of Essex. "We are confident that the Fiberspace Gridlocker laser source will accelerate the deployment of hyperfine WDM products into the long-haul and metro markets."

Dr. Leonardo Berezovsky, chairman and CEO of Fiberspace, commented, "The combination of the Essex hyperfine WDM and the Fiberspace Gridlocker laser source has the potential to create a compelling, low cost, bandwidth expansion path for installed networks."

Hyperfine WDM technology with 6.25-GHz channel spacing is currently in customer trials in Europe and North America. The Gridlocker tunable DFB laser source with absolute accuracy of +/- 250 MHz will be available for selected customer testing in the second quarter of 2002.