SALEM, N.H. -- StockerYale, Inc., a leading independent provider of phase masks, specialty optical fiber, advanced optical technologies, and specialized illumination products, announces a new line of diffraction gratings for the telecommunications industry. Primarily designed for use in multiplexers, demultiplexers, optical spectrum analyzers, and tunable lasers, StockerYale’s advanced holographically recorded diffraction gratings can be custom designed to optimize the performance of these telecommunication devices.StockerYale’s advanced diffraction gratings offer significant advantages for telecommunication systems by providing extremely low stray light, low insertion loss, and excellent channel-to-channel uniformity.Due to a proprietary holographic recording method, StockerYale’s diffraction gratings provide several key advantages over competing technologies. One such advantage is that the applied holographic methods permit low stray light gratings of small periods. The use of small period gratings is becoming more and more prevalent in many applications. Another advantage of the company’s holographic recording method is that relatively large diffraction gratings (several inches long) can be manufactured as quickly and easily as smaller gratings (several millimeters long). The holographic recording method is also perfectly suited for the simultaneous, rapid fabrication of many small gratings. StockerYale Inc.