The TB-2500 achieves high finesse and maintains low loss making it a critical component to a broad range of applications. For Fiber Bragg Grating (FBG) based sensor systems, TB-2500 can be utilized as the key component for wavelength filtering. It allows many telecom DWDM systems to optimize EDFA receiver performance. It has proven its capabilities in 10G b/s DWDM transmission applications. This product include a optical circulator as part of the order.