ClassID:

167129

G01M11/335 - CPC Classification

Classification description:

Testing of optical apparatus; Testing structures by optical methods not otherwise provided for; Testing of optical devices, constituted by fibre optics or optical waveguides with a light emitter being disposed at one fibre or waveguide end-face, and a light receiver at the other end-face using two or more input wavelengths

Recent Application in this class:
#1
20250277717
2025-09-04

NON-INVASIVE REAL-TIME MONITORING SYSTEM FOR MxN OPTICAL CIRCUIT SWITCH WITH MEMS MIRROR ARRAY BASED SWITCH ENGINE

#2
20250244202
2025-07-31

A METHOD AND SYSTEM FOR MEASUREMENT OF OPTICAL LOSS IN WAFER LEVEL TESTING VIA WAVELENGTH-ROUTE DIVISION

#3
20250116570
2025-04-10

PHOTONIC WAFER LEVEL TESTING SYSTEMS, DEVICES, AND METHODS OF OPERATION

#4
20240385073
2024-11-21

DEVICE FOR MEASURING THE PERFORMANCE OF AN OPTICAL DETECTOR, AND ASSOCIATED MEASURING METHOD

#5
20240377282
2024-11-14

EQUIPMENT AND METHOD FOR MEASURING LOSS AND CROSSTALK THAT OCCUR IN OPTICAL FIBER TRANSMISSION LINE

#6
20240377281
2024-11-14

EQUIPMENT AND METHOD FOR MEASURING CROSSTALK BETWEEN CORES OF AN OPTICAL FIBER HAVING MULTIPLE CORES

#7
20240369447
2024-11-07

MULTI-CHANNEL POWER PROFILE ESTIMATION

#8
20240353289
2024-10-24

LIGHT INTENSITY DISTRIBUTION PATTERN MEASURING DEVICE AND METHOD

#9
20240011866
2024-01-11

MODE-DEPENDENT LOSS MEASUREMENT DEVICE AND MODE-DEPENDENT LOSS MEASUREMENT METHOD

#10
20230366780
2023-11-16

ALIGNMENT ASSESSMENT FOR HEAD-MOUNTED DISPLAY SYSTEM

#11
20230184623
2023-06-15

METHODS AND APPARATUSES FOR OPTICAL AND GEOMETRIC PARAMETER EXTRACTION FOR PHOTONIC INTEGRATED CIRCUITS

#12
20230136742
2023-05-04

Optoelectronic chip and method for testing photonic circuits of such chip

#13
20230088409
2023-03-23

METHOD FOR BANDWIDTH MEASUREMENT IN AN OPTICAL FIBER

#14
20220317166
2022-10-06

Photonic device and a terahertz signal generator

#15
20220260427
2022-08-18

Method and system utilizing absolute velocity to improve the performance of electromagnetic devices

#16
20220236141
2022-07-28

Optical transmission path inspecting system, and optical transmission path inspecting device

#17
20220050014
2022-02-17

Line monitoring system having heterodyne coherent detection

#18
20210372882
2021-12-02

Mode-dependent loss measurement device and mode-dependent loss measuring method

#19
20210270699
2021-09-02

Photonic wafer level testing systems, devices, and methods of operation

#20
20200232878
2020-07-23

TESTING OF INTEGRATED OPTICAL MIXERS

#21
20200217750
2020-07-09

Fiber connectors for multimode optical fibers

#22
20200174182
2020-06-04

Method of selecting wideband multimode fiber from 850 nm differential mode delays

#23
20200096417
2020-03-26

Method and apparatus for chromatic dispersion measurement based on optoelectronic oscillations

#24
20200041379
2020-02-06

Deformometer for determining deformation of an optical cavity optic

#25
20200033228
2020-01-30

Photonic wafer level testing systems, devices, and methods of operation

#26
20190250213
2019-08-15

Optoelectronic chip and method for testing photonic circuits of such chip

#27
20190011633
2019-01-10

Method of qualifying wide-band multimode fiber from single wavelength characterization using EMB extrapolation, corresponding system and computer program

#28
20180375580
2018-12-27

Transmission apparatus, reception apparatus, and method for estimating characteristics of transmission line

#29
20180340861
2018-11-29

Measuring optical array polarity, power, and loss using a position sensing detector and photodetector-equipped optical testing device

#30
20180241468
2018-08-23

Nonlinear spatially resolved interferometer for characterizing optical properties of deployed telecommunication cables

#31
20180041272
2018-02-08

Methods for determining receiver coupling efficiency, link margin, and link topology in active optical cables

#32
20170363508
2017-12-21

Optical fiber leakage loss measurement method

#33
20170338888
2017-11-23

Optical network test instrument including optical network unit identifier capture capability from downstream signals

#34
20170205311
2017-07-20

Method of measuring time delays with respect to differential mode delay (DMD) of a multi-mode fiber (MMF) or a few-mode fiber (FMF)

#35
20170005723
2017-01-05

Optical network test instrument including optical network unit identifier capture capability from downstream signals

#36
20160161397
2016-06-09

Determining a polarization-related characteristic of an optical link

#37
20160033360
2016-02-04

MULTI-PEAK REFERENCE GRATING

#38
20140368809
2014-12-18

Multi-wavelength DMD measurement apparatus and methods

#39
20140319354
2014-10-30

Methods and apparatus for measuring multimode optical fiber bandwidth

#40
20140211201
2014-07-31

Fiber fault sniffer

#41
20140111794
2014-04-24

System and/or method for measuring waveguide modes

#42
20140098361
2014-04-10

Measuring modal content of multi-moded fibers

#43
20140055777
2014-02-27

High-powered optical module safety systems and methods

#44
20130229648
2013-09-05

Testing of passive optical components

#45
20130058365
2013-03-07

Tunable laser system having fine and coarse wavelength discrimination

#46
20130046499
2013-02-21

System and method utilizing time-slice-eradication to eliminate the effects of wavelength non-linearities from swept-wavelength testing of optical components for sources with non-linearities

#47
20130044312
2013-02-21

System and method for eliminating the effect of non-primary laser modes on characterization of optical components through characterized decomposition

#48
20120250008
2012-10-04

Measuring method for crosstalk between cores in multi-core optical fiber

#49
20120105831
2012-05-03

Measuring modal content of multi-moded fibers

#50
20120099099
2012-04-26

Method for designing and selecting optical fiber for use with a transmitter optical subassembly

#51
20110255861
2011-10-20

Method and apparatus for determining a signal transfer characteristic along a light path in an optical network

#52
20110205531
2011-08-25

Wavelength dispersion measurement method and device and optical transmission system

#53
20110116080
2011-05-19

Method of measuring optical loss and apparatus for measuring optical loss

#54
20100309456
2010-12-09

System and method for measuring dispersion

#55
20100239245
2010-09-23

Polarization Mode Emulators and Polarization Mode Dispersion Compensators Based on Optical Polarization Rotators with Discrete Polarization States

#56
20100149521
2010-06-17

Apparatus and method for monitoring extinction ratio of optical signals

#57
20100134787
2010-06-03

Measurement method of chromatic dispersion of optical beam waveguide using interference fringe measurement system

#58
20090297154
2009-12-03

Transmission-path-type specifying apparatus and transmission-path-type specifying method

#59
20090297140
2009-12-03

Measuring chromatic dispersion in an optical wavelength channel of an optical fiber link

#60
20090262337
2009-10-22

Measuring modal content of multi-moded fibers

#61
20090185171
2009-07-23

Measuring modal content of multi-moded fibers

#62
20090141267
2009-06-04

Optical-fiber-characteristic measuring apparatus and optical-fiber-characteristic measuring method

#63
20090046747
2009-02-19

External Cavity for Generating a Stimulus Signal and Filtering a Response Signal Received From a Dut

#64
20080232795
2008-09-25

Method and system for localizing an attenuation change location in an optical waveguide

#65
20080231850
2008-09-25

Measuring device, method, program, and recording medium

#66
20080043227
2008-02-21

Apparatus and method to detect and correct for mode hop wavelength error in optical component measurement systems

#67
20070189656
2007-08-16

Method and apparatus for the evaluation of polarization mode dispersion in optical fibers

#68
20070146721
2007-06-28

System and method for measurement of optical parameters and characterization of multiport optical devices

#69
20070058158
2007-03-15

Measurement and characterization of nonlinear phase shifts

#70
20060209290
2006-09-21

System and instrument to verify routing and measure insertion losses of multiple fiber optic assemblies

#71
20060067685
2006-03-30

Method and arrangement for determining the dispersion of an optical transmission link

#72
20050286057
2005-12-29

Load dependent analyzing optical components

#73
20050259243
2005-11-24

Method and apparatus for testing optical fiber cables

#74
20050146710
2005-07-07

Chromatic dispersion measurement and compensation

#75
20050030522
2005-02-10

Characterization of active and passive optical properties of an optical device

#76
16142127
2018-12-25

Methods for determining receiver coupling efficiency, link margin, and link topology in active optical cables