Milpitas, Calif., November 18, 2008 – JDSU, one of the leading providers of test solutions for the research and development, system verification testing and production needs of carrier labs, network equipment manufacturers and their supply chains, today announced it has acquired Circadiant, the industry’s recognized leader in SFP+, 10 GigE and other stressed signal test solutions.  Terms of the acquisition were not released.

Circadiant ( www.circadiant.com ) expands JDSU’s product portfolio for the lab and production test market by capitalizing on a number of key assets, including Circadiant’s successful Hydra and OST product platforms, established test expertise and close customer relationships with leading network equipment manufacturers, optical module vendors and semiconductor companies.  JDSU’s extensive optical transport product development capabilities and global distribution channels will now be available to extend the technology leadership established by Circadiant and broaden the availability of its industry-leading SFP+, 10GigE and other stressed signal test solutions.

The SFP+ transceiver is specified by a multi-source agreement (MSA) between manufacturers and allows greater port density (the number of transceivers per inch along the edge of a mother board) than other transceiver configurations.  SFP+ is emerging as the 10 GigE optical interface of choice because it enables lower cost and even higher port density network interface cards. To achieve this, developers and manufactures are faced with new compliance and performance test challenges that are addressed by Circadiant’s products and systems. 
 
“To capitalize on the economic benefits of developing SFP+ modules, equipment manufacturers require test solutions that evolve accordingly,” said Bill Mortimer, vice president and general manager in JDSU’s Communications Test and Measurement business segment.  “Circadiant has technology and products that not only meet this challenge but complement the JDSU optical transport test portfolio and offer important test capabilities our customers are asking for.”

Circadiant standards-based test solutions include the Hydra platform, the industry’s first 10 GigE Long Reach Multimode (LRM) and 10 GigE SFP+ test systems, and the OST platform for testing optical components, modules and systems using real-world conditions.

“Testing 10GigE components and systems requires the verification of standards compliance for product development, but also simplified, lower-cost test solutions for manufacturing,” said My Chung, CEO of Circadiant.  “Providing industry-first test solutions that help meet new and complex challenges associated with SFP+ while also accelerating time-to-market is the differentiator for Circadiant products.  We will expand these capabilities as part of JDSU.”

About JDSU
JDSU (NASDAQ: JDSU; and TSX: JDU) enables broadband and optical innovation in the communications, commercial and consumer markets. JDSU is the leading provider of communications test and measurement solutions and optical products for telecommunications service providers, cable operators, and network equipment manufacturers.  JDSU is also a leading provider of innovative optical solutions for medical/environmental instrumentation, semiconductor processing, display, brand authentication, aerospace and defense, and decorative applications.  More information is available at http://www.jdsu.com/.

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The statements contained in this press release that are not purely historical are forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Act of 1934. Such forward-looking statements include, but are not limited to any statement or implication that the mobile phone test system market will grow at the rate predicted by third parties; that Circadiant’s operations, sales channels and business will be successfully incorporated into JDSU, or that Circadiant products described in this press release (i) will be successfully introduced or marketed, (ii) will be qualified and purchased by our customers, or (iii) will perform to any particular specifications or performance or reliability standards. Such forward-looking statements involve risks and uncertainties that, if realized, could materially impair the Company's results of operations, business, and financial condition. These risks and uncertainties include the following, among other things:   (a) our current visibility as to customer demand levels, future market growth and the timing, extent, location, requirements and nature of network build-outs and technology transitions, is extremely limited; (b) the timing, extent, location, requirements and nature of network technology transitions is extremely unpredictable and development cycles are generally very long; and (c) the products may not (i)  perform as expected without material defects, (ii) be manufactured at acceptable volumes, yields, and cost, (iii)  be qualified and accepted by our customers, and (iv) successfully compete with products offered by our competitors, and (d) factors discussed from time to time in reports filed by the Company with the Securities and Exchange Commission. The forward-looking statements contained in this news release are made as of the date hereof, and the Company does not assume any obligation to update or qualify any of the statements made herein. Source: JDS Uniphase Corporation.

Contacts
Press/Industry: Nick Rowan, +1 240-404-1924 or nick.rowan@jdsu.com
Investors: Michelle Levine, +1 408-546-4421 or michelle.levine@jdsu.com