Optical signal-to-noise ratio monitoring using uncorrelated beat noise

Author

Chen, Wei ; Tucker, Rodney S. ; Yi, Xingwen ; Shieh, William ; Evans, Jamie S.

Author_Institution

Dept. of Electr. & Electron. Eng., Univ. of Melbourne, Vic., Australia

Volume

17

Issue

11

fYear

2005

Firstpage

2484

Lastpage

2486

Abstract

We propose and experimentally demonstrate a new technique for monitoring optical signal-to-noise ratio (OSNR). The noisy signal to be measured is split into two paths. With offset optical bandpass filters and balanced radio-frequency subtraction after detection, the signal is separated from the beat noise. OSNR can then be monitored by analyzing this beat noise. An experiment for a 10-Gb/s system shows that for OSNR in the range of 10-30 dB, the proposed OSNR monitoring scheme produces errors of less than 0.5 dB.

Keywords

band-pass filters; monitoring; optical fibre communication; optical filters; optical noise; 10 Gbit/s; optical bandpass filters; optical signal-to-noise ratio monitoring; radio-frequency subtraction; uncorrelated beat noise; Band pass filters; Monitoring; Noise shaping; Nonlinear optics; Optical attenuators; Optical filters; Optical noise; Radio frequency; Signal to noise ratio; Wavelength division multiplexing; Amplified spontaneous emission (ASE) noise; beat noise; optical signal-to-noise ratio (OSNR) monitoring; wavelength-division multiplexing (WDM);

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2005.858100

Filename

1522361