Low-cost in-band optical signal-to-noise ratio monitoring using an optical interferometer
Masuduzzaman Bakaul, Ken Clarke, Trevor Anderson, Don Hewitt, Sarah D Dods
2006 IEEE LEOS ANNUAL MEETING CONFERENCE PROCEEDINGS, VOLS 1 AND 2 | IEEE | Published : 2006
An in-band optical signal-to-noise-ratio (OSNR) monitor using an optical interferometer is proposed and demonstrated. The proposed scheme separates the uncorrelated beat noise by using low-bandwidth balanced photodetectors and digital signal processing. © 2006 IEEE.