M. Fallahi et al., GRATING DEMULTIPLEXER INTEGRATED WITH MSM DETECTOR ARRAY IN INGAAS ALGAAS/GAAS FOR WDM/, IEEE photonics technology letters, 5(7), 1993, pp. 794-797
We demonstrate the integration of a grating demultiplexer with curved
output waveguides and MSM photodetector array in InGaAs/AlGaAs/GaAs op
erating in the 1 mum wavelength region. The structure provides 38 chan
nels with 1 nm channel spacing. The total loss including scattering fr
om unmetalized grating is about 17 dB. A channel crosstalk of -11 dB i
s obtained. The FWHM of the channel pass band is 0.5 nm.