The stabilization modules for distributed feedback (DFB) lasers are another common application for fiber Bragg gratings (FBGs). The pump laser stabilizer acts as a reflective mirror outside the pump laser module. It reflects a small portion of light back to the laser diode cavity, inducing a laser emission at the desired wavelength. The spectrum of the FBG stabilizer can be customized to fit the best performance of the laser output. This is particularly applicable to pump lasers for 980nm and 1480nm Erbium-doped fiber amplifiers (EDFAs), as well as DWDM modules for the 1300 nm and 1550 nm bands. Wavelength lockers can be produced at wavelengths such as 1064 nm, even with polarization-maintaining (PM) fiber.
Features of Wavelength Locker
--High wavelength accuracy
--High reliability
--Highly resistant to electromagnetic interference
--Small size and weight
--Excellent long-term stability
Applications of Wavelength Locker
--Laser diode wavelength locker
--Resonators for Raman fiber lasers
--DFB laser stabilization for DWDM application
--Tuneable laser modules
Specification ofWavelength Locker
Specification ofWavelength Locker
Parameters | Specifications | Tolerance |
Center wavelength | 970-980nm, custom | ±0.3nm |
FWHM | 0.1~1.2 nm | ±0.1nm |
Reflectivity | 2%-90% | ±1~5% |
SMSR | >10 dB, >15 dB, custom | |
Pigtail length | Custom | |
Fiber type | HI1060,HI980,PM980,SMF-28,custom | |
Proof test level | >150 kpsi | |
Operating temperature | -20℃~75℃ | |
Termination | Bare fiber, FC/PC, FC/APC, SC/PC,SC/APC |
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.
