Research on Signal-to-Noise Ratio Effect in Spatial Scanning Optical Fiber Fabry-Perot Sensing Demodulation System

2015 ◽  
Vol 35 (11) ◽  
pp. 1106003
Author(s):  
江俊峰 Jiang Junfeng ◽  
邹盛亮 Zou Shengliang ◽  
王双 Wang Shuang ◽  
刘铁根 Liu Tiegen ◽  
刘琨 Liu Kun ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Signal To Noise Ratio ◽  
Signal To Noise ◽  
Ratio Effect ◽  
Fabry Perot ◽  
Noise Ratio

scholarly journals Evaluation of Nonlinear Interference Effects in a Dispersion Managed (DM) Optical Fiber: Performance and Transmission Analysis of 16QAM Modulation using Split Step Fourier Method

2020 ◽  
Author(s):  
Reinhardt Rading
Keyword(s):  
Monte Carlo Simulation ◽  
Monte Carlo ◽  
Optical Fiber ◽  
Signal To Noise Ratio ◽  
Fourier Method ◽  
Interference Effects ◽  
Signal To Noise ◽  
Optical Links ◽  
Noise Ratio ◽  
The Impact

<div>This paper investigates the impact on the optical</div><div>signal-to-noise ratio (OSNR) of the residual per span (RDPS) in a N × 100km dispersion managed system with zero total accumulated dispersion from input to output using split step Fourier method (SSFM) -Monte Carlo simulation. </div><div><br></div><div>This paper shows that the nonlinear interference NLI does in-fact impact the performance yielding different best working power depending on the value of Nx100 km span and the type of dispersion managed link. The paper shows that dispersion uncompensated optical links are preferable to dispersion managed fibers in equalizing NLI effects in long haul optical links.</div>

scholarly journals Fabry–Perot interferometer as a solar background noise suppressor: application to daytime lidar

2012 ◽  
Vol 55 (2) ◽  
Author(s):  
Karnam Raghunath ◽  
Karnam Ramesh ◽  
Sanama Narayana Reddy
Keyword(s):  
Background Noise ◽  
Noise Suppression ◽  
Performance Indicator ◽  
Signal To Noise Ratio ◽  
Interference Filter ◽  
Signal To Noise ◽  
Night Time ◽  
Fabry Perot ◽  
Noise Ratio ◽  
Identical Test

<p>Continuous atmospheric probing by a lidar is a requirement for many applications. However, due to high solar background noise during the daytime, lidar operations are mostly restricted to night-time. While many techniques are in practice, like reducing the receiver field of view, changing the view angle, introducing a narrow band Interference Filter (IF), these are applied to circumvent problems, rather than to suppress the noise. Using a Fabry-Perot interferometer as a narrow passband filter for solar background noise suppression is a known technique, and its potential is exploited in our system. An optical-fiber-coupled lidar system with its transmitter injection seeded was developed and has been operated during the daytime at Gadanki (13.6˚N, 79.2˚ E). The signal-to-noise ratio of the return signal is used as the performance indicator, to evaluate the improvements. Signal-to-noise ratios with and without the Fabry-Perot interferometer are measured with near identical test set-ups. The signal-to-noise ratio enhancement factor is ca. 4, in agreement with the theoretical value. The performance is compared when the receiver fields of view are changed.</p>

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