Packaged polarization-insensitive WDM monitor with low loss (7.3 dB) and wide tuning range (4.5 nm)

A hybrid approach to dynamic‐wavelength blocking/equalizing and optical‐power monitoring

“…Several wavelength manipulation approaches [1][2][3][4][5] have been proposed, but current technologies usually separate the functions of optical-power monitoring and wavelength manipulation, with the result that the devices are bulky and expensive. For example, a typical dynamic-wavelength equalizer consists of a demultiplexer (DMUX), a series of variable optical attenuators, and a multiplexer (MUX) [2][3][4][5], while an optical power monitor includes a DMUX and a series of optical detectors [6]. This paper describes a compact hybrid approach that integrates the functions of dynamic-wavelength blocking and equalizing with optical-power monitoring.…”