Results 231 to 240 of about 5,993 (258)
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OSNR Monitoring using Two Fibre Interferometers
Conference on Lasers and Electro-Optics 2010, 2010In-band OSNR from 5 to 30dB of a single 10G NRZ-OOK channel was measured by two fiber interferometers within an accuracy of ±0.5dB without requirement for knowledge of the noise-free extinction ratio of the signal.
A.L. Bradley +6 more
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A Distributed Optimization Approach to Constrained OSNR Problem [PDF]
IFAC Proceedings Volumes, 2008 Abstract This paper studies constrained optical signal-to-noise ratio (OSNR) problem via a distributed optimization approach. In multi-channel optical systems, the signal over an optical link can be regarded as an interfering noise for others, which leads to OSNR degradation.
Lacra Pavel, Tansu Alpcan, Yan Pan
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Fiber Bragg grating OSNR monitor
Frontiers in Optics 2004/Laser Science XXII/Diffractive Optics and Micro-Optics/Optical Fabrication and Testing, 2004A novel optical signal-to-noise ratio (OSNR) monitor has been proposed and demonstrated. The device is completely passive, very simple, compact and cost effective. More than 30 dB dynamic range polarization insensitive OSNR monitoring has been achieved.
Sun, F., Lu, Z., Xiao, G., Grover, C.
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Research on the algorithm of OSNR in the OPM
SPIE Proceedings, 2004A method for calculating the optical-signal-to-noise ratio (OSNR) of an optical performance monitor (OPM) is discussed. OSNR is one of the most import parameters determining DWDM system performance because of its dominance in determining the bit-error-rate (BER).
Qianggao Hu, Xiaohu Cheng, Jun He
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Monitoring of OSNR by using a Mach–Zehnder interferometer
Microwave and Optical Technology Letters, 2001AbstractWe introduce a novel technique to monitor the optical signal‐to‐noise ratio (OSNR) using a Mach–Zehnder interferometer. The error of the novel method is less than 0.5 dB when the OSNR is between 10 and 40 dB in the best working case. In practice, the dynamic range reduces to 10–30 dB because of the influence of polarization, crosstalk, and ...
Zhenning Tao +4 more
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OSNR sensitivity of multi-level modulation formats
SPIE Proceedings, 2010A simple analytical method to estimate the OSNR sensitivity of multi-level amplitude, phase and combined modulation formats is shown. Results are verified by numerical simulations.
Rosenkranz, Dochhan, Eiselt
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Analytical OSNR Formulation Considering Nonlinear Compensation
2013 18th OptoElectronics and Communications Conference held jointly with 2013 International Conference on Photonics in Switching, 2013We develop the analytical OSNR formulation to predict Q-factor improvement with nonlinear compensation. Fiber with Aeff of around 130 µm2 is found to be optimum for transpaci¿c submarine digital coherent systems upgraded with nonlinear ...
Y. Yamamoto +3 more
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An Accurate Nonlinear Noise Insensitive OSNR Monitor
Optical Fiber Communication Conference, 2016We propose a new design for pilot based OSNR monitor with XPM noise exclusion at the receiver side. High accuracy and low nonlinear sensitivity (
Shoichiro Oda +7 more
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Dual Polarization Interferometric In-Band OSNR Measurement
IEEE Photonics Technology Letters, 2012An in-band optical signal-to-noise ratio (OSNR) monitoring technique based on a Michelson fiber interferometer and a linear polarizer is presented in this letter. OSNR values of up to 25±0.5 dB were measured for 10-G nonreturn-to-zero-differential phase-OOK (NRZ-OOK) and NRZ-differential phase-shift keyed (NRZ-DPSK) signals without prior knowledge of ...
Weihua Guo +6 more
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An OSNR monitor for optical packet switched networks
IEEE Photonics Technology Letters, 2006Optical packet switched networks bring about new challenges to the research in optical performance monitoring. We present the first experimental demonstration of an optical signal-to-noise ratio (OSNR) monitor capable of direct OSNR monitoring on the packet basis.
Xingwen Yi, William Shieh, Wei Chen
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