ClassID:

224524

H04J14/0216 - CPC Classification

Classification description:

Optical multiplex systems; Wavelength-division multiplex systems; Add-and-drop multiplexing; Architecture aspects Bidirectional architectures

Recent Application in this class:
#1
20260074817
2026-03-12

BIDIRECTIONAL WAVELENGTH ACCESS SYSTEM

#2
20250184029
2025-06-05

WAVELENGTH-DIVISION-MULTIPLEXING OPTICAL CIRCUIT IMPLEMENTED IN PHOTONIC INTEGRATED CIRCUIT FOR OPTICAL TRANSMITTER

#3
20250158732
2025-05-15

OPTICAL TRANSMISSION CONTROL APPARATUS, OPTICAL TRANSMISSION SYSTEM, AND METHOD FOR OPTICAL TRANSMISSION CONTROL APPARATUS

#4
20250055589
2025-02-13

BALANCED OPTICAL COMMUNICATION NETWORKS

#5
20240267658
2024-08-08

CONTROL OF ONU ACTIVATION IN HIGH BIT RATE PONs

#6
20230246725
2023-08-03

Wavelength-division-multiplexing optical circuit implemented in photonic integrated circuit for optical transmitter

#7
20230198653
2023-06-22

Efficient spectrum allocation in a multi-node optical network

#8
20230076009
2023-03-09

Process margin relaxation

#9
20230063431
2023-03-02

Diffraction compensated compact wavelength division multiplexing devices

#10
20220255656
2022-08-11

Apparatus, systems, and methods for optical channel management

#11
20220247508
2022-08-04

Optical signal processor

#12
20220140932
2022-05-05

OPTICAL TRANSCEIVER

#13
20220140909
2022-05-05

Optical line terminal

#14
20220052777
2022-02-17

Efficient spectrum allocation in a multi-node optical network

#15
20220014272
2022-01-13

Multi-channel, bi-directional optical communication module

#16
20210345022
2021-11-04

Process margin relaxation

#17
20210318549
2021-10-14

Bidirectional micro-optics module for WDM application

#18
20210288743
2021-09-16

Apparatus, systems, and methods for optical channel management

#19
20210175972
2021-06-10

Device and method for processing an optical signal

#20
20200374025
2020-11-26

Systems and methods for optical protection switch with single-ended activation, operation, and provision of 1+1 protection over redundant bidirectional communications paths

#21
20200328836
2020-10-15

Optical system including a reconfigurable optical add/drop multiplexer and filters

#22
20200235839
2020-07-23

Apparatus, systems, and methods for optical channel management

#23
20200186274
2020-06-11

OPTICAL DUPLEXER AND OPTICAL TRANSCEIVING SYSTEM

#24
20200044738
2020-02-06

Systems and methods of dual-side array bi-directional CWDM micro-optics

#25
20190229831
2019-07-25

System and method for photonic distribution of microwave frequency electrical signal for distributed microwave MIMO communications

#26
20190140762
2019-05-09

Method and network node for communication over a bidirectional communication link

#27
20190007155
2019-01-03

Apparatus, systems, and methods for optical channel management

#28
20180337726
2018-11-22

Transmission quality estimation system, transmission quality estimation device, and transmission quality estimation method

#29
20180323867
2018-11-08

Communication apparatus, method of communication and communication system

#30
20180220209
2018-08-02

Transport network and method

#31
20180167705
2018-06-14

Methods and apparatus for a flattened data center network employing wavelength-agnostic endpoints

#32
20180097563
2018-04-05

Free space optical communications device

#33
20180074385
2018-03-15

OPTICAL ROUTER

#34
20180054271
2018-02-22

Extended branching device and control method of the same

#35
20170134836
2017-05-11

Methods and apparatus for a flattened data center network employing wavelength-agnostic endpoints

#36
20170126319
2017-05-04

Optical transceiver

#37
20170082908
2017-03-23

Optical router having optical routing nodes of four bi-directional optical switches

#38
20160301467
2016-10-13

Low cost secure ROADM branching unit with redundancy protection

#39
20160149663
2016-05-26

Low cost secure submarine ROADM branching unit using bidirectional wavelength-selective switch

#40
20150304034
2015-10-22

N-input receiver: RFoG OBI mitigation with retransmission

#41
20150086206
2015-03-26

FIBER OPTIC SENSING SYSTEMS AND METHODS OF OPERATING THE SAME

#42
20140226987
2014-08-14

Protected optical single-fiber WDM system

#43
20140140696
2014-05-22

Bidirectional wavelength cross connect architectures using wavelength routing elements

#44
20140119728
2014-05-01

Method and apparatus for implementing a multi-dimensional optical circuit switching fabric

#45
20130330073
2013-12-12

Bidirectional monitor module, optical module, optical add-drop multiplexer, and optical system

#46
20130308946
2013-11-21

Optical switching architectures for nodes in WDM mesh and ring networks

#47
20130136448
2013-05-30

Meshed protected passive optical access network structure and optical network unit structure therefore

#48
20130114957
2013-05-09

DUAL PATH WAVELENGTH SELECTIVE SWITCH

#49
20130084067
2013-04-04

Optical repeater complying with redundant configuration

#50
20110305456
2011-12-15

Optical router using interconnected photonic crystal elements with specific lattice-hole geometry

#51
20110299850
2011-12-08

Optical switching architectures for nodes in WDM mesh and ring networks

#52
20110188858
2011-08-04

Optical backhaul network for wireless broadband service

#53
20110019957
2011-01-27

MAGNETO-OPTO MICRO-RING RESONATOR AND SWITCH

#54
20100260501
2010-10-14

Bidirectional wavelength cross connect architectures using wavelength routing elements

#55
20100021103
2010-01-28

WAVELENGTH BLOCKER

#56
20080219666
2008-09-11

Optical line terminal arrangement, apparatus and methods

#57
20080166123
2008-07-10

Bidirectional wavelength cross connect architectures using wavelength routing elements

#58
20080131128
2008-06-05

Optical signal transmission device and optical communication network

#59
20080056715
2008-03-06

Optical transmission apparatus having OADM function

#60
20080019694
2008-01-24

WAVELENGTH DIVISION MULTIPLEXING PASSIVE OPTICAL NETWORK SYSTEM

#61
20080013951
2008-01-17

WAVELENGTH DIVISION MULTIPLEXING PASSIVE OPTICAL NETWORK SYSTEM

#62
20080013950
2008-01-17

Wavelength reconfigurable optical network

#63
20070297801
2007-12-27

DWDM transport of CATV and digital signals over optical fiber in low-dispersion spectral regions

#64
20070269211
2007-11-22

Multiple port symmetric reflective wavelength-selective mesh node

#65
20070237524
2007-10-11

Optical switching architectures for nodes in WDM mesh and ring networks

#66
20070104488
2007-05-10

Optical circuit and linear system dedicated node apparatus, linear system WDM network, and tree system WDM network using such

#67
20070086781
2007-04-19

Bidirectional wavelength cross connect architectures using wavelength routing elements

#68
20070086780
2007-04-19

Optical logic gate based optical router

#69
20070014576
2007-01-18

Bidirectional add/drop multiplexer

#70
20070003283
2007-01-04

Dynamic allocation of bandwidth in a bidirectional optical transmission system

#71
20060216027
2006-09-28

Wavelength division multiplexing transmission apparatus using a multiple wavelength light source

#72
20060083514
2006-04-20

Bi-directional OADM module and solution for the optical access network

#73
20060024059
2006-02-02

Bi-directional optical add-drop multiplexer

#74
20050175041
2005-08-11

Optical add-drop multiplexer

#75
20050141894
2005-06-30

Bi-directional add/drop node

#76
20050117906
2005-06-02

Reconfigurable optical device for controlled insertion/dropping of optical resources

#77
20050117903
2005-06-02

WDM-PON having bus structure

#78
20050111788
2005-05-26

Optical apparatus for bidirectional optical communication

#79
20050084262
2005-04-21

Protected bidirectional WDM network

#80
20050068649
2005-03-31

Optical add/drop structures

#81
20050047789
2005-03-03

Bidirectional multichannel optical telecommunication system

#82
20050031349
2005-02-10

Bidirectional optical add-drop multiplexer

#83
20050031348
2005-02-10

Switching media converter and ring type wavelength division multiplexing passive optical network system using the same

#84
20050025489
2005-02-03

Add/drop module for single fiber wavelength division multiplexing systems

#85
20050025488
2005-02-03

Scalable and movable DWDM usage of CWDM networks

#86
20050008370
2005-01-13

Optical add/drop multiplexer using circulators and reflectors

#87
17750305
2022-12-06

Distributed antenna system and communication system

#88
15640696
2018-06-19

Bidirectional optical element

#89
14534854
2016-04-12

Communication fabric for a cluster of network hosts

#90
13733443
2015-11-10

Distributed optical block multiplexer topologies