Highly Customizable Software Will Support Transparent Operation of JDSU AON Superblade 
Within Various DWDM Network Infrastructures

Milpitas and San Diego, Calif., February 26, 2008 – JDSU (NASDAQ: JDSU and TSX: JDU) today announced the introduction of its Agile Optical Network (AON) Embedded Operating System (OS). This telecom-grade application framework will support all of the optical functions within JDSU’s new AON Superblade solution that was also announced today, allowing it to seamlessly integrate within network equipment manufacturer’s (NEMS) and service provider networks. 

In addition to managing the day-to-day optical functions of the AON Superblade, the AON Embedded OS is designed with a modular software approach that allows JDSU design engineers to easily add new optical devices, applications, and customer systems.

The embedded operating system will also offer a higher level of performance compared to current optical offerings, including enhanced monitoring and increased responsiveness to system variations, due to integrated control systems and simplified communication paths. It will feature telecom grade functionality, including in-service software upgrades, built-in testing, and multiple telecom management interfaces such as SNMP, TL1 and CLI interfaces.

The AON Embedded OS includes a common library with three major software layers. This architecture will enable JDSU to easily add a new customer or platform to the AON Superblade without affecting other layers that manage basic functions. The layers include:

• Customer Adaptation Layer – Highly customizable layer that allows the optical elements of the AON Superblade to work transparently in each customer’s unique network infrastructure.
• Common Operations Administration and Management (OAM) Software – Manages operations and administration between the optical device software and the specialized customer interface software. Examples include the device configuration, monitoring and trouble shooting. 
• Optical Device Software – Controls the basic operations of optical elements on the AON Superblade – such as the regular functions of the wavelength selective switch (WSS), erbium-doped amplifier (EDFA), and optical channel monitor technology. 

“JDSU’s AON Embedded Operating System is based on hundreds of thousands of lines of code that we’ve developed based on ten years of subsystem software expertise,” said David Gudmundson, president of Optical Communications at JDSU. “It will be the key element that allows the AON Superblade to work seamlessly with our customers’ network infrastructures.”

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/.
Contact Information

Contacts
Investors: Michelle Levine  408-546-4421 or michelle.levine@jdsu.com
Press:   Noël Bilodeau 408-439-2140 or noel.bilodeau@jdsu.com

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 products and technologies 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, but are not limited to, (a) the failure of the products (i) to perform as expected without material defects, (ii) to be manufactured at acceptable volumes, yields, and cost, (iii) to be qualified and accepted by our customers, and (iv) to successfully compete with products offered by our competitors, and (b) 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 press 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: JDSU.

###