The UltraSpec™-C160 and UltraSpec™-L160 for DWDM applications are an affordable, high-spectral-resolution, rugged, compact approach to DWDM devices and analyzers. Expanding on state-of-the-art holographic optics deployed in Raman spectrographs and military avionics, the unique UltraSpec™ grating/prism (GRISM) structure uses a VPH transmission grating sealed between two precision prisms. This novel geometry provides an expanded beam footprint on the grating that is much larger than the beam cross-section, and results in a combination of both high dispersion and high resolution in a very compact package.
The UltraSpec™-C160 has the range and resolution necessary for full characterization of the telecommunication C-band spectrum at 50-GHz channel spacing while the UltraSpec™-L160 version gives L-band spectrum capability. Each UltraSpec™ exhibits low PDL and low stray light, with flat spectral response and high transmission. Similar uses include high-channel-density DWDM multiplexers, demultiplexers, and receivers.