ClassID:

174058

G02B6/29304 - CPC Classification

Classification description:

Light guides; Coupling light guides; Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means operating by diffraction, e.g. grating

Sub-classes:
Recent Application in this class:
#1
20250362518
2025-11-27

DIFFRACTIVE DISPLAY SYSTEM WITH ADJUSTABLE IPD

#2
20250291114
2025-09-18

FABRICATION-TOLERANT PLANAR OPTICAL WAVELENGTH MULTIPLEXER/DEMULTIPLEXER

#3
20250180897
2025-06-05

HYBRID MODULATION METHOD AND SYSTEM

#4
20250085554
2025-03-13

DIGITAL WRITING OF LARGE DIFFRACTION GRATING PATTERNS

#5
20230384522
2023-11-30

Broadband optical coupling using dispersive elements

#6
20230367074
2023-11-16

OPTICAL FIBER FILTER WITH ULTRA-WIDE TUNING RANGE

#7
20230296842
2023-09-21

OPTICAL PROCESSING APPARATUS AND OPTICAL SYSTEM

#8
20230254041
2023-08-10

Per-span optical fiber nonlinearity compensation using integrated photonic computing

#9
20230238765
2023-07-27

OPTICAL AMPLIFICATION APPARATUS AND MULTI-PORT WAVELENGTH DIVISION MULTIPLEXING COUPLER

#10
20230073153
2023-03-09

Diffraction grating return mirror for wide field of view line of sight jitter sensing

#11
20230024334
2023-01-26

ADJUSTABLE GRID TRACKING TRANSMITTERS AND RECEIVERS

#12
20220416930
2022-12-29

WDM1r combiner for PON

#13
20220365295
2022-11-17

Three-dimentional packaging method and package structure of photonic-electronic chip

#14
20220269004
2022-08-25

Broadband optical coupling using dispersive elements

#15
20220196916
2022-06-23

Optical fiber filter with ultra-wide tuning range

#16
20220155074
2022-05-19

Silicon photonic integrated circuit and fiber optic gyroscope apparatus using grating couplers

#17
20220091323
2022-03-24

Device including diffractive optical element

#18
20220075195
2022-03-10

Digital writing of large diffraction grating patterns

#19
20220006555
2022-01-06

MODE DIVISION MULTIPLEXER, MODE DIVISION MULTIPLEXING SYSTEM, MODE DIVISION DEMULTIPLEXING SYSTEM, AND COMMUNICATIONS SYSTEM

#20
20210341672
2021-11-04

Broadband optical coupling using dispersive elements

#21
20210294017
2021-09-23

Static multiview display and method employing directional light source and horizontal diffuser

#22
20210278596
2021-09-09

Wavelength selective switch based on LCoS

#23
20200309696
2020-10-01

Optical density measuring apparatus and optical waveguide

#24
20200150348
2020-05-14

Backside binary grated lens coupled to front side waveguide

#25
20200049889
2020-02-13

OPTICAL LAYER, DISPLAY DEVICE INCLUDING THE SAME AND BACKLIGHT UNIT

#26
20190302368
2019-10-03

Optical splitter

#27
20190250253
2019-08-15

Apparatus and method for generating multiple-wavelength distributed continuous wave and pulse optical transmission signal

#28
20180074317
2018-03-15

Display active alignment system for waveguide displays

#29
20180067264
2018-03-08

Backside binary grated lens coupled to front side waveguide

#30
20170351102
2017-12-07

Nano-scale conical traps based splitter, combiner, and reflector, and applications utilizing same

#31
20170090124
2017-03-30

Beamforming for an optical switch

#32
20170075055
2017-03-16

Optical layer, display device including the same and backlight unit

#33
20170023753
2017-01-26

Adjustable grid tracking transmitters and receivers

#34
20170003452
2017-01-05

Backside binary grated lens coupled to front side waveguide

#35
20160349517
2016-12-01

Light guide element and image display device

#36
20160291267
2016-10-06

COUPLING OF PHOTODETECTOR ARRAY TO OPTICAL DEMULTIPLEXER OUTPUTS WITH INDEX MATCHED MATERIAL

#37
20160246006
2016-08-25

Wavelength selective switch for multimode optical systems

#38
20160109669
2016-04-21

Optomechanical assembly

#39
20150372752
2015-12-24

Optical path processing method and apparatus

#40
20140308006
2014-10-16

Optical connections

#41
20130173816
2013-07-04

Data distribution system and apparatus thereof

#42
20130058611
2013-03-07

Photonic crystal optical waveguide solar spectrum splitter

#43
20090310963
2009-12-17

Dynamic optical devices

#44
17160710
2021-11-30

Bragg gratings with silicide-coated segments

#45
16582135
2020-12-29

Waveguide display with holographic Bragg grating

#46
15864859
2019-11-12

Waveguide display with holographic Bragg grating

#47
14616488
2015-08-18

Interleaved aliased AWG filter for continuous wideband wavelength discrimination