Low-Cost In-band Optical Signal-to-Noise Ratio Monitoring Using An Optical Interferometer

2006 ◽  
Author(s):  
Masuduzzaman Bakaul ◽  
Ken Clarke ◽  
Trevor Anderson ◽  
Don Hewitt ◽  
Sarah Dods
Keyword(s):  
Signal To Noise Ratio ◽  
Low Cost ◽  
Optical Signal ◽  
Optical Interferometer ◽  
Signal To Noise ◽  
Noise Ratio

Internally Modulated Chirped Pulse Based Direct Detection Type φ-OTDR System with High Signal-to-Noise Ratio and Low Cost

2019 ◽  
Vol 46 (8) ◽  
pp. 0806003
Author(s):  
李鲁川 Luchuan Li ◽  
卢斌 Bin Lu ◽  
王校 Xiao Wang ◽  
梁嘉靖 Jiajing Liang ◽  
郑汉荣 Hanrong Zheng ◽  
...  
Keyword(s):  
Direct Detection ◽  
Signal To Noise Ratio ◽  
Low Cost ◽  
High Signal ◽  
Signal To Noise ◽  
Chirped Pulse ◽  
Noise Ratio

scholarly journals Integrated in-band optical signal-to-noise ratio monitor implemented on SOI platform

2012 ◽  
Vol 20 (8) ◽  
pp. 8512 ◽  
Author(s):  
Lianxi Jia ◽  
Junfeng Song ◽  
Tsung-Yang Liow ◽  
Qing Fang ◽  
Mingbin Yu ◽  
...  
Keyword(s):  
Signal To Noise Ratio ◽  
Optical Signal ◽  
Signal To Noise ◽  
Noise Ratio

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

2005 ◽  
Vol 17 (11) ◽  
pp. 2484-2486 ◽  
Author(s):  
Wei Chen ◽  
R.S. Tucker ◽  
Xingwen Yi ◽  
W. Shieh ◽  
J.S. Evans
Keyword(s):  
Signal To Noise Ratio ◽  
Optical Signal ◽  
Signal To Noise ◽  
Beat Noise ◽  
Noise Ratio

Effect of Phase Shift Deviation on the Performance of an Optical 90o Hybrid without Cross-over

2011 ◽  
Vol 403-408 ◽  
pp. 1813-1816
Author(s):  
Wei Hua Liu ◽  
Cheng Zhi Xu ◽  
Yuan Zhong Xu
Keyword(s):  
Phase Shift ◽  
Phase Shifter ◽  
Signal To Noise Ratio ◽  
Optical Signal ◽  
Signal To Noise ◽  
Power Inputs ◽  
Phase Deviation ◽  
Noise Ratio ◽  
Dc Component

The effect of the phase deviation on the phase shifter in a 2 × 4 optical 90 hybrid without cross-over is discussed based on a set of formulas derived for the output of this structure. We found that if the two power inputs are equal, the phase deviation of the phase shifter only introduces attenuation in output AC component, and if not equal, it not only introduces the AC component attenuation, but also leads to DC component differentiation, which degrades the optical signal-to-noise ratio of the quadrature output.

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