An integrated multichannel optical wavelength monitoring circuit for wavelength division multiplexing communication systems is presented. Full wavelength coverage of the working range without any blind spot is realised by a centre-offset phased-array waveguide grating design. The monitor exhibits a wavelength resolution of 0.02 nm/dB (200 GHz channel spacing)
Published in:
Electronics Letters
(Volume:34
,
Issue:
22
)
Date of Publication: 29 Oct 1998