NEPEAN, Ontario and SAN JOSE, California; TORONTO, Canada, Wednesday, July 12, 2000 - JDS Uniphase Corporation (Nasdaq:JDSU and TSE:JDU) and Celestica Inc. (NYSE, TSE: CLS) today announced an agreement for Celestica to provide contract optical subassembly services to JDS Uniphase for optical amplifiers. The optical amplifier is a key enabling technology for widespread deployment of fiberoptic communications around the world. Demand has grown rapidly as system manufacturers deploy ever more advanced fiberoptic communications systems, seeking greater functionality and reduced costs.

JDS Uniphase is currently embarked on a global capacity expansion program to meet the rapidly growing demand for fiberoptic components and modules for telecommunications. This capacity increase program is employing a combination of plant and employment expansion, productivity improvements, investments in automation, and increased use of outsourcing. The relationship with Celestica to expand production of optical amplifiers is an important initiative in this global capacity expansion effort.

"We believe that there is a tremendous market opportunity over the next few years for optical amplifiers. Every day, our customers are demanding more and more product from us," said Jay Abbe, President and Chief Operating Officer of JDS Uniphase. "By working with Celestica on this initiative, we expect to provide a significant increase in product availability for our optical amplifier customers."

"Celestica is looking forward to working with JDS Uniphase–an industry leader in optical networking components and modules," said Eugene Polistuk, President and CEO, Celestica. "Celestica’s investments in technology and engineering have been key to sustaining its leadership in providing high-value manufacturing services to its customers. This agreement with JDS Uniphase is strategic for Celestica. It reinforces Celestica’s commitment to the photonics industry by further strengthening its position in an exciting growth market."

About JDS Uniphase
JDS Uniphase is a high-technology company that designs, develops, manufactures, and distributes a comprehensive range of products for the growing fiberoptic communications market. These products are deployed by system manufacturers worldwide to develop advanced optical networks for the telecommunications and cable television industries. JDS Uniphase Corporation is traded on the Nasdaq National Market under the symbol JDSU, and the exchangeable shares of JDS Uniphase Ltd. are traded on The Toronto Stock Exchange under the symbol JDU.

More information is available at http://www.jdsunph.com/

About Celestica
With close to 23,000 employees worldwide, Celestica operates 33 manufacturing and design facilities in the United States, Canada, Mexico, the United Kingdom, Ireland, Italy, the Czech Republic, Thailand, Hong Kong, China, Malaysia, and Brazil. Celestica provides a broad range of services including design, prototyping, assembly, testing, product assurance, supply chain management, worldwide distribution, and after-sales service. Its customers include industry-leading original equipment manufacturers (OEMs), primarily in the information technology and communications sectors.

For further information on Celestica, visit its web site at http://www.celestica.com/

The company's security filings can also be accessed at http://www.sedar.com/

Statements in this press release which are not historical, including statements regarding JDS Uniphase's or Celestica's or their respective management's intentions, strategies, hopes, beliefs, expectations, representations, projections, plans or predictions of the future are forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. Such statements include statements regarding the JDS Uniphase global capacity expansion program, future market opportunity for optical amplifiers, the expected increase in product availability to optical amplifier customers, and the demand for JDS Uniphase's products and the ability to meet that demand. It is important to note that Celestica's and/or JDS Uniphase's actual results could differ materially from those in any such forward-looking statements. Factors that could cause actual results to differ materially include the risk factors listed from time to time in Celestica's and JDS Uniphase's respective SEC reports including but not limited to, their annual reports on Form 10-K, and their quarterly reports on Form 10-Q.

For further information please contact:

Alison Reynders	Laurie Flanagan
Manager, Investor Relations	Corporate Communications
JDS Uniphase	Celestica
(408) 434-1800	(416) 448-2200