Kyocera Corporation has developed a crystal etalon filter, a component in optical telecommunications systems for large-volume data transmission, that prevents dense wavelengths of light from interfering with each other by sensing deviations between multiple wavelengths, the company announced at CEATEC Japan 2009.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/C. From October 1, Kyocera will offer samples of this product in two temperature coefficient types (5.4pm/C and 15.7pm/C).The WDM* 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.
Crystal Etalon Filter: Selection of Wavelength Temperature Coefficient
