About the 1550nm Narrow bandwidth FBG
Due to the excellent properties of Narrow-band FBG, it can replace traditional TFF constructed for effective reuse of DWDM optical communication system multiplexer/solution, dynamic optical cross connector (OXC), optical multiplexer insert points (OADM), and so on.

The application of narrow band-with FBG
The narrow-bandwidth FBG products can substitute for the TFF in DWDM system,OXC and OADM devices. Moreover, they are widely used in the area of accurate sensing, accurate spectrum detecting and accurate pump laser wavelength locking.

About Raysung Photonics Inc:

Raysung photonics located in the export processing zone of Xi'an, China, is specialized in manufacturing FBG, lensed fiber and FBG filter for FTTH. Besides those three main products, Raysung can also manufacture wavelength stabilizer, DWDM FBG filter, chirped fiber grating, long period grating, custom fiber grating and so on. In addition, Raysung has ability to develop and produce special gratings for sensor. The company is committed to the research, design and producing of those products and it is the only one manufacture which has the capacity to volume- producing all sorts of fiber grating in China. Moreover, Raysung is one of the only manufactures in the world who has the capacity to manufacture the type of optical fiber which incorporates FBG and lensed fiber. Raysung's products are widely used in aerospace, construction industry, coal industry etc. The company's professional teams have rich experience in photoelectric area and we have advanced technology and equipment. This allows us to provide our customers with high-quality products and optimized proposals.

In 2006, Raysung completed ISO9001: 2000 and ISO14001 certification and also obtained several patent rights. The materials of our products accord with ROHS criterion. Raysung's products are always superior in quality and competitive in price.