KYOCERA Develops Industry's First Crystal Etalon Filter Allowing Selection of Wavelength Temperature Coefficient

This is the industry's first crystal etalon filter that allows users to select a wavelength temperature coefficient within the range of 5.4 to 15.7pm/EsC*1. From October 1, Kyocera will offer samples of this product in two temperature coefficient types (5.4pm/EsC and 15.7pm/EsC).

With the internet's rapid expansion in recent years and the drastic increase in volume of information transfer from the exchange of large-volume data such as movies, optical telecommunications now face demand for handling a greater volume at a higher speed. The WDM*2 transmission system, with its capacity to send more optical signals (information) per single optical fiber, is becoming the mainstream method of meeting such demands. Tunable laser modules are developed in a range of configurations to further increase optical signals, leading to the need for crystal etalon filters, which possess wavelength temperature coefficient ranging from low to high and are optimal for any configuration.

The new product was created by Kyocera Kinseki -- a wholly-owned subsidiary of Kyocera engaged in the development and manufacturing of crystal devices -- with the company's advanced technology for analyzing at sub-pm levels (1x10-12 meters or smaller), data on optical characteristics accumulated over years of research, and its technology for developing high-definition, high-quality synthetic crystals. With the development of this new product, for the first time in this industry, a crystal etalon filter is able to assign arbitrary figures as a wavelength temperature coefficient ranging from 5.4 to 15.7pm/EsC.

This development enables more flexibility in designing tunable laser modules capable of increasing optical signals emitted, while contributing to higher precision, and better wavelength stability and reliability.

Kyocera Kinseki possesses a full production system that allows the company to undertake all procedures; from developing materials to designing, processing, coating and analyzing characteristics. The company also intends to use this opportunity to strengthen its business supplying parts to fields related to optical telecommunications and to contribute to the progression and growth of optical telecommunications networks.

Kyocera will exhibit this product at CEATEC JAPAN 2009 from October 6 (Tue) through 10 (Sat) at Makuhari Messe in Chiba Prefecture, Japan.

*1 pm/degC = 10-12 meters/degC

*2 WDM: Wavelength Division Multiplexing - a telecommunications technology using optical fiber. It enables fast and large-volume data transmission by simultaneously using optical signals of different wavelengths.

Product Outline
Name            Crystal etalon filter
Feature         - Allows arbitrary assignment of wavelength temperature coefficient
                within the range of 5.4 to 15.7pm/EsC
Specifications  - Material: Quartz crystal
                - Size: >1mm on each side
                - Wavelengths adaptable: 1,520-1,620nm
                - Temperature coefficient : 5.4 to 15.7pm/EsC
                - FSR: 50/100GHz
                - Extinction ratio, reflectivity: Custom
Samples         - Available from October 1, 2009
                - Two types available, with greater (15.7pm/EsC) and smaller
                (5.4pm/EsC) wavelength temperature coefficient
                *Kyocera can also provide samples to accommodate a specific
                temperature coefficient.

About KYOCERA

Kyocera Corporation (NYSE:KYO)(TOKYO:6971)(http://global.kyocera.com/), the parent and global headquarters of the Kyocera Group, was founded in 1959 as a producer of fine ceramics (also known as "advanced ceramics"). By combining these engineered materials with metals and plastics, and integrating them with other technologies, Kyocera has become a leading supplier of solar power generating systems, telecommunications equipment, electronic components, laser printers, copiers, semiconductor packages, cutting tools and industrial ceramics. During the year ended March 31, 2009, the company's net sales totaled 1.13 trillion yen (approximately US$11.5 billion). The company, which marks its 50th anniversary and the 40th anniversary of its U.S. operations this year, is ranked #418 on Forbes magazine's 2009 "Global 2000" listing of the world's largest publicly traded companies.

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SOURCE: Kyocera Corporation

KYOCERA Corporation (Japan) 
Judah REYNOLDS, +81-(0)75-604-3416 
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Fax: +81-(0)75-604-3516