Multimode 200 GHz-spaced dense wavelength division demultiplexing for local area networks

摘要

We describe the design and performance of a multimode 8-channel, 200GHz-spaced dense wavelength division demultiplexer (DWDM) using a high order blazed grating. The mean insertion loss of this DEMUX is 1.95dB. Adjacent crosstalk is measured to be better than -45dB. The temperature test cycling from 20 to 60 deg C indicates that the wavelength thermal drift is less than 0.00033nm/ deg C. The device has multi-mode fibers for both input and output, which is good for the optical networks in both metropolitan and local areas. The device is not sensitive to the disturbance of temperature and environment, so no temperature controller is needed.