Title :
Multiple-channel OSNR monitoring with a single detector
Author :
Lin, Xiao ; Yan, Li
Author_Institution :
Dept. of Comput. Sci. & Electr. Eng., Univ. of Maryland, Baltimore, MD, USA
Abstract :
We report a multichannel optical signal-to-noise ratio (OSNR) monitoring method using the integrated planar lightwave circuit and fast Fourier transform techniques with a single detector. The OSNR of four-channel wavelength-division-multiplexing signals can be monitored for a dynamic range of 20 dB with an accuracy of ±1 dB. This method can further allow one to suppress the optical crosstalk in accordance with the requirements of OSNR accuracy and dynamic range.
Keywords :
arrayed waveguide gratings; fast Fourier transforms; integrated optics; monitoring; optical crosstalk; optical fibre communication; optical noise; photodetectors; telecommunication channels; wavelength division multiplexing; OSNR accuracy; dynamic range; fast Fourier transform; integrated planar light-wave circuit; multichannel OSNR monitoring; optical crosstalk suppression; optical signal-to-noise ratio; single detector; wavelength division multiplexing signals; Detectors; Monitoring; Optical crosstalk; Optical films; Optical filters; Optical modulation; Optical noise; Phase modulation; Signal to noise ratio; Wavelength division multiplexing; Arrayed-waveguide grating (AWG); monitoring; optical signal-to-noise ratio (OSNR); wavelength-division multiplexing (WDM);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2004.836755
