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Class Information
Number: 398/26
Name: Optical communications > Diagnostic testing > Determination of communication parameter > Signal to noise ratio
Description: Subject matter wherein the parameter is a ratio of a usable light signal being transmitted to the noise or undesired signal.

Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8712237 Method and apparatus for reducing cost of optical amplification in a network Apr. 29, 2014
8694248 Systems and methods of monitoring the accuracy of a global positioning system receiver in a marine vessel Apr. 8, 2014
8682175 Variable rate transponders for optical communication systems using digital electric filters Mar. 25, 2014
8666244 Monitoring optical parameters of a modulated optical signal Mar. 4, 2014
8666245 System and method for measuring optical signal-to-noise ratio Mar. 4, 2014
8660426 Optical signal to noise ratio monitoring technique and system Feb. 25, 2014
8655169 Degradation adaptation network Feb. 18, 2014
8655170 OSNR monitor device and OSNR measurement device Feb. 18, 2014
8644704 Method and system for an adaptive channel grid of an optical network Feb. 4, 2014
8625986 Methods and systems for optical performance monitoring Jan. 7, 2014
8620155 Optical signal to noise monitor Dec. 31, 2013
8615063 Level transition determination circuit and method for using the same Dec. 24, 2013
8615167 WDM optical transmission system and control method thereof Dec. 24, 2013
8611741 Method for measuring signal quality in WDM optical networks Dec. 17, 2013
8594498 Method and apparatus for in-band OSNR monitoring Nov. 26, 2013
8588609 Wavelength division multiplexing transmission system and apparatus and optical signal noise ratio calculation method Nov. 19, 2013
8565595 Method and apparatus optimizing decision threshold level of optical receiver Oct. 22, 2013
8548320 Method for monitoring wavelength-division multiplexed signal Oct. 1, 2013
8526812 Wavelength assignment in an optical WDM network Sep. 3, 2013
8515277 Nonlinear distortion detecting circuit, optical receiver, optical transmission system, and method for detecting nonlinear distortion Aug. 20, 2013
8498535 Testing of elements used in communication links Jul. 30, 2013
8494361 Apparatus for monitoring optical signal quality specifically applicable to NRZ optical signals Jul. 23, 2013
8467678 OSNR model for optical engineering rules used in a planning tool Jun. 18, 2013
8463122 Quality of service in an optical network Jun. 11, 2013
8452177 Method and apparatus for fast optical signal impairment evaluation May. 28, 2013
8437633 Optical network and control method therefor May. 7, 2013
8417115 Quantifying link quality in an optoelectronic module Apr. 9, 2013
8401397 Optical reception device, optical receiving method, and optical transmission apparatus Mar. 19, 2013
8364033 Differential eye diagrams Jan. 29, 2013
8364034 In-band optical noise measurement using differential polarization response Jan. 29, 2013
8358930 In-band optical signal to noise ratio determination method and system Jan. 22, 2013
8331778 WDM transmission apparatus Dec. 11, 2012
8320758 Channel monitor and method for estimating optical power Nov. 27, 2012
8306427 WDM transmission apparatus, optical add-drop multiplexer and WDM transmission method Nov. 6, 2012
8301025 Method for determining the optical signal-to-noise ratio and receiver device for an optical transmission system Oct. 30, 2012
8290365 Simulation of optical characteristics of an optical fiber Oct. 16, 2012
8290362 Predictive end-to-end management for SONET networks Oct. 16, 2012
8280257 Systems and methods for side-lobe compensation in reconfigurable optical add-drop multiplexers Oct. 2, 2012
8270829 Apparatus and method for designing network Sep. 18, 2012
8265481 Wavelength assignment in an optical WDM network Sep. 11, 2012
8254782 Optical signal quality monitoring apparatus Aug. 28, 2012
8254779 Field-configurable optical network terminal device Aug. 28, 2012
8254781 Testing of receivers with separate linear O/E module and host used in communication links Aug. 28, 2012
8244127 Quality of service in an optical network Aug. 14, 2012
8229679 Stepped chirp lidar system and method Jul. 24, 2012
8208814 Optical transceiver calibration system and method Jun. 26, 2012
8165465 Apparatus and method of controlling tap coefficient of transversal filer, optical receiver apparatus, and optical communication system Apr. 24, 2012
8160449 Electronic apparatus Apr. 17, 2012
8160442 Interferometric optical signal-to-noise ratio measurement using a calibration factor Apr. 17, 2012
8160443 Calibration factor for interferometric optical signal-to-noise ratio measurement Apr. 17, 2012

1 2 3 4

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