Accelink's OPM is designed based on the unique MEMS TOF technology and is used for monitoring of DWDM transmission system performance(such as spectrum, channel wavelength, channel optical power and in band OSNR). Benifit from the mature MEMS production platform, our OPM has excellent optical performance, reliability and cost control ability. It can perfectly match the development needs of wavelength expansion of DWDM transmission system and support super C or super L band with flexible grid in 6.25GHz channel granularity. Due to the signal modulation format insensitive design, it can perfectly support 10G to 400G beyond multiple rate mixed transmission.