ClassID:

167117

G01M11/3136 - 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 and a light receiver being disposed at the same side of a fibre or waveguide end-face, e.g. reflectometers; Reflectometers detecting the back-scattered light in the time-domain, e.g. OTDR for testing of multiple fibers

Recent Application in this class:
#1
20260113109
2026-04-23

FIBER ELEMENT OFFSET LENGTH-BASED OPTICAL REFLECTOR PEAK ANALYSIS

#2
20240426703
2024-12-26

OPTICAL TRANSMISSION LINE TEST EQUIPMENT AND TEST METHOD

#3
20240418601
2024-12-19

CONNECTION LOSS DIFFERENCE MEASUREMENT METHOD, EQUIPMENT AND PROGRAM

#4
20240313858
2024-09-19

Method and system for detecting an improper protection in an optical communication network

#5
20240077382
2024-03-07

Optical Fiber Measurement System

#6
20230344514
2023-10-26

HIGH SPEED BIDIRECTIONAL TEST OF DUAL-FIBER LINK

#7
20230283365
2023-09-07

Apparatuses integrating separate WDM modules and OTDR/switch modules

#8
20230084406
2023-03-16

FIBER ELEMENT OFFSET LENGTH-BASED OPTICAL REFLECTOR PEAK ANALYSIS

#9
20220283054
2022-09-08

Circuitry for remote optical communications devices and methods utilizing same

#10
20220146373
2022-05-12

Polarity receive module

#11
20220128434
2022-04-28

Testing optical fiber link continuity using OTDR backscattering patterns

#12
20220090984
2022-03-24

Multiple front-end device based high speed optical time domain reflectometer acquisition

#13
20220065744
2022-03-03

Optical pulse testing method and optical pulse testing device

#14
20210381927
2021-12-09

Fiber optic virtual sensing system and method

#15
20210364385
2021-11-25

Method and system for interrogating optical fibers

#16
20210278313
2021-09-09

Optical test instrument with removable cartridge

#17
20210255056
2021-08-19

Optical testing devices and related methods

#18
20210239568
2021-08-05

Fiber-optic testing source and fiber-optic testing receiver for multi-fiber cable testing

#19
20210239567
2021-08-05

Optical pulse testing device and optical pulse testing method

#20
20210231524
2021-07-29

Parallel optics based optical time domain reflectometer acquisition

#21
20210211193
2021-07-08

Optical fiber characterization measurement systems and methods

#22
20210194577
2021-06-24

Optical time domain reflectometer, test method of optical transmission line, and test system of optical transmission line

#23
20210148786
2021-05-20

Optical Time Domain Reflectometer And Optical Subassembly Having Optical Time Domain Reflectometry Function

#24
20210080349
2021-03-18

Multiple front-end device based high speed optical time domain reflectometer acquisition

#25
20210063274
2021-03-04

Signature recognition on optical-fiber connector endfaces

#26
20210063273
2021-03-04

Parallel optics based optical time domain reflectometer acquisition

#27
20210048369
2021-02-18

Multi-degree monitoring apparatus

#28
20210003473
2021-01-07

System for monitoring resin flow

#29
20200386653
2020-12-10

Duplicate OTDR measurement detection

#30
20200326261
2020-10-15

Fiber optic virtual sensing system and method

#31
20200116591
2020-04-16

OTDR method targeting identified event

#32
20200110003
2020-04-09

Method and apparatus for detecting discontinuities in an optical channel, in particular a fiber optic line

#33
20200096416
2020-03-26

Fiber-optic testing source and fiber-optic testing receiver for multi-fiber cable testing

#34
20200073057
2020-03-05

Optical fiber array and optical measurement device

#35
20190372665
2019-12-05

Measurement system and measurement method

#36
20190316987
2019-10-17

Systems and methods for identification and testing of optical fibers

#37
20190277669
2019-09-12

Timing markers for fiber sensing systems

#38
20190257715
2019-08-22

Single OTDR measurement for a plurality of fibers

#39
20190234832
2019-08-01

Multilayer coding method for distributed physical measurements

#40
20190137355
2019-05-09

Optical cable monitoring system

#41
20180316422
2018-11-01

Location measurement apparatus, light modulation converter, and light variation location measurement method

#42
20180283985
2018-10-04

Fiber-optic testing source and fiber-optic testing receiver for multi-fiber cable testing

#43
20180266917
2018-09-20

Single-end optical fiber transfer matrix measurement using spatial pilot

#44
20180238680
2018-08-23

Sensitive optical fiber shape sensing based on shape-related optical polarization evolution

#45
20180131437
2018-05-10

Multimode launch systems for use in performing an OTDR measurement on a multi-fiber array DUT and method of performing same

#46
20180058982
2018-03-01

Multifiber interrogation with reflectometry techniques

#47
20180019813
2018-01-18

Raman amplifier system and method with integrated optical time domain reflectometer

#48
20170234767
2017-08-17

Testing fiber arrangement in multi-fiber cables

#49
20170149496
2017-05-25

Multiple-acquisition OTDR method and device

#50
20170093486
2017-03-30

Optical network monitoring with a photonic switch

#51
20170085317
2017-03-23

Multimode launch systems for use in performing an OTDR measurement on a multi-fiber array DUT and method of performing same

#52
20170078021
2017-03-16

Electrical interface module

#53
20160356670
2016-12-08

System and method for certification of physical parameters of communication links

#54
20160076969
2016-03-17

Optical fiber fault locator

#55
20160069774
2016-03-10

Optical pulse tester

#56
20160043798
2016-02-11

OTDR fault tracing in optical networks

#57
20160041065
2016-02-11

Testing fiber arrangement in multi-fiber cables

#58
20150381274
2015-12-31

Raman amplifier system and method with integrated optical time domain reflectometer

#59
20150372752
2015-12-24

Optical path processing method and apparatus

#60
20150334475
2015-11-19

Wavelength division multiplexer array

#61
20150326956
2015-11-12

Routing in a WDM-based PON

#62
20150323420
2015-11-12

Optical time domain reflectometer in a small form factor package

#63
20150177096
2015-06-25

Long distance optical fiber sensing system and method

#64
20150124246
2015-05-07

System and method for identifying fiber sequence in a multi-fiber optical cable

#65
20150062562
2015-03-05

Optical fiber testing using OTDR instrument

#66
20150023658
2015-01-22

System, a wavelength isolator and methods therein for supervision of a passive optical network

#67
20140226970
2014-08-14

PON supervision using OTDR measurements

#68
20140226152
2014-08-14

OTDR mapping method

#69
20140218721
2014-08-07

Optical fiber fault locator

#70
20140212130
2014-07-31

Methods and apparatuses for supervision of optical networks

#71
20140147109
2014-05-29

PON supervision using OTDR measurements

#72
20140139824
2014-05-22

System and method for measuring fiber temperature using OTDR measurements

#73
20140133847
2014-05-15

Device, remote node and methods for PON supervision

#74
20140126900
2014-05-08

OTDR trace analysis in PON systems

#75
20140077971
2014-03-20

Raman amplifier system and method with integrated optical time domain reflectometer

#76
20140003806
2014-01-02

Supervision of wavelength division multiplexed optical networks

#77
20130301036
2013-11-14

Array connector test harness for single-ended optical test instruments

#78
20130259466
2013-10-03

Arrangement at a remote node, a remote node, a central office and respective methods therein for supervision of a wavelength division multiplexed passive optical network

#79
20130202290
2013-08-08

Optical line terminal (OLT) and method therefore for performing in-band and out-band OTDR measurements

#80
20130194566
2013-08-01

Field tester for topologies utilizing array connectors and multi-wavelength field tester for topologies utilizing array connectors

#81
20130183030
2013-07-18

SYSTEM FOR TESTING OF OPTICAL NETWORK

#82
20130148109
2013-06-13

Method and system for detecting fiber fault in passive optical network

#83
20130077975
2013-03-28

System and method for performing in-band reflection analysis in a passive optical network

#84
20130039645
2013-02-14

Tunable coherent optical time division reflectometry

#85
20130021598
2013-01-24

Fiber measurement device

#86
20120236294
2012-09-20

Optical fiber fault locator

#87
20120163800
2012-06-28

Optical time domain reflectometry (OTDR) trace analysis in PON systems

#88
20120109570
2012-05-03

System and method for measuring fiber temperatures using OTDR measurements

#89
20120039598
2012-02-16

Method and apparatus for fault discovery in a passive optical network (PON)

#90
20110311220
2011-12-22

Optical line monitoring apparatus and optical line monitoring method

#91
20110311218
2011-12-22

Optical line monitoring apparatus and optical line monitoring method

#92
20110268438
2011-11-03

Unidirectional absolute optical attenuation measurement with OTDR

#93
20110255860
2011-10-20

FAULT LOCALIZATION METHOD AND A FAULT LOCALIZATION APPARATUS IN A PASSIVE OPTICAL NETWORK AND A PASSIVE OPTICAL NETWORK HAVING THE SAME

#94
20110249973
2011-10-13

Opto-electronic signal processing methods, systems, and apparatus for optical sensor interrogation

#95
20110153544
2011-06-23

Fiber identification using mode field diameter profile

#96
20110116799
2011-05-19

Tunable coherent optical time division reflectometry

#97
20110102776
2011-05-05

Beam Path Monitoring Device and Beam Path Monitoring System

#98
20110075152
2011-03-31

Long distance optical fiber sensing system and method

#99
20090268197
2009-10-29

Method and apparatus for identification of multiple fibers using an OTDR

#100
20090190921
2009-07-30

Optical line monitoring apparatus and optical line monitoring method

#101
20080297773
2008-12-04

Using sets of OTDR receive fibers with different lengths of marker events to verify optical fiber connectivity

#102
20080291431
2008-11-27

Apparatus for monitoring optical obstructions in an optical split network and method thereof

#103
20080205885
2008-08-28

Optical network monitor PCB

#104
20080101752
2008-05-01

Small-form-factor fiber optic transceiver module having built-in test capability and method

#105
20080086278
2008-04-10

Optical time domain reflectometer, and optical fiber measuring method and optical fiber measuring system using the same

#106
20070146721
2007-06-28

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

#107
20070116467
2007-05-24

Passive optical network

#108
20070025676
2007-02-01

System and method for identifying fiber optic cables

#109
20060029390
2006-02-09

Optical distribution network monitoring method and system

#110
20050271321
2005-12-08

Test system for optical line which carries out fault search for optical line from user optical terminal side

#111
16740953
2022-03-08

OTDR method for end-to-end optical fiber link characterization

#112
14068002
2016-01-05

Optical time domain reflectometer calibration standard

#113
13552557
2018-07-03

Polarity test of fiber arrays based on electronically switched optical signals

#114
12890758
2015-02-24

Means to detect damage in composite material panels