Sumitomo Electric Announces Development of New Optical Device for FTTH

Sumitomo Electric Industries, Ltd. (SEI) (TOKYO:5802)
(ISIN:JP3407400005), today announced the succession in the development
of Optical Device for FTTH Bi-Directional transmission. The market can
take advantage of products that harness SEI´s leadership in optical
solutions. These product offerings include:

-- Diplexer for G-PON OLT (SXT4472 series),

-- Triplexer for G-PON ONU (SXT9241 series),

-- Bi-Dirctional Optical Subassembly (BOSA) for Point-to-Point
Application (SXT6030 series).

All of these optical device series are fully RoHS compliant
supporting environmental initiatives.

The FTTH Market

The FTTH market continues to grow globally as customers require
increased bandwidth. This demand is driving the need for carriers to
upgrade from B-PON to G-PON. When comparing B-PON devices to G-PONs.
G-PONs require high output optical power, improved receiver
sensitivity and high performance transimpedance amplifier (TIA). And
for Point-to-Point Application, small size package is quite preferable
for small form modules. To satisfy these requirements, SEI is
vertically integrated with O-E devices and has developed very good
in-house packaging technology. "Our packaging technology improves
reliability and contributes to smaller package size and lower
manufacturing cost." said Ichiro Kono, General Manager of SEI´s
Optical Transmission Components Division.

FTTH Product Features

(1) Burst mode technology: The SXT4472 series corresponds with
burst mode signal that is required at G-PON OLT´s. The SXT4472 series
are equipped with the reset terminal pin for responding to the burst
signal within a very short period.

(2) One Package Technology: The SXT4472 and 9241 series utilize
in-house package technology. Those include the Laser Diode, Monitor
PD, APD, TIA and WDM filter. These are all assembled into a TO-56
package together. This structure enables miniaturization and
cost-competitiveness.

SEI is releasing three Bi-Directional modules in the SXT4000, 6000
and 9000 series:

(1) SXT4472 series: G-PON ONT Diplexer; ITU G.984.2 Class B+

(2) SXT6030 series: BOSA, IEEE802.3ah

(3) SXT9241 series: G-PON ONU Triplexer, ITU G.984.2 Class B+

The SXT4472, 6030 and 9241 series will be displayed at the
ExceLight/Sumitomo Electric booth (#2135) during OFC/NFOEC 2008,
February 26 to 28 in San Diego, California.

About Sumitomo Electric Industries, Ltd.

Sumitomo Electric Industries, Ltd. (SEI) designs, manufactures and
sells optical fiber, cable and components, advanced electronic
devices, and automotive parts. Through a successful strategy of
research and diversification, SEI has become one of the world´s
leading companies at the forefront of the revolution in information
and communications. The company has operations around the world in
more than 30 countries and employs over 130,000 people. SEI reported
group net sales of $20 billion for the year ended March 2007.
www.sei.co.jp/index.en.html

About ExceLight Communications

ExceLight Communications, Inc., a subsidiary of Sumitomo Electric
Industries, is a leading provider of optical components and modules to
the telecom, CATV, broadband, and data communications markets.
ExceLight offers a comprehensive array of transceivers, transmitters,
receivers, lasers, photodiodes, and passive components.

Sumitomo´s world-class research and manufacturing capabilities in
optical technology continue to expand and strengthen the product
portfolio while maintaining industry leading levels of reliability.
ExceLight focuses on the "Americas" (geographically) and the
well-established global presence of Sumitomo allows integrated support
to customer facilities throughout the world. www.excelight.com