FBG 广泛应用于光通信的各种场合中，此类产品为可根据需求定制DWDM FBG.
Fiber Bragg gratings are components for a wide range of applications in optical communications. The FBGs act there as in-fiber narrow bａnd filters.此系列的产品为应用于DWDM的FBG（DWDM FBG）.
DWDM FBG主要包括以下应用：
DWDM technology for 2.5 Gbps and 10 Gbps systems
ASE filtering 
Add/Drop-multiplexers for 100GHz and 50GHz channel spacing

DWDM FBG主要参数如下

参数名称：                         标准参数值                                            可选参数值
Wavelength:                 1280～1340nm; 1520~1620nm                      800~1620nm
Reflectivity:                         5~99.99%
FWHM:                            50GHz/100GHz/200GHz or custom 
Pass Band:                           >+/-0.12nm
Insertion loss:                      <0.1dB
PDL:                                   <0.2dB
SNR adj.channel:                  >20dB                                                     >25dB
SNR non-adj.channel             >30dB                                                     >25dB
Termination                       Bare fiber, FC/PC, FC/APC, ST, SC/PC, SC/APC, DIN, SMA
Packaging                           3mm standard tube, 9mm athermal, boxed.
operating temperature:         0~70℃