ClassID:

223881

H04B10/2971 - CPC Classification

Classification description:

Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication; Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form; Bidirectional amplification A single amplifier for both directions

Recent Application in this class:
#1
20250184004
2025-06-05

AMPLIFICATION METHOD IN A PON ACCESS NETWORK, COMPUTER PROGRAM PRODUCT, CORRESPONDING OPTICAL LINE TERMINATION DEVICE

#2
20240421908
2024-12-19

PLUGGABLE OPTICAL AMPLIFIER FOR DATACENTER INTERCONNECTS

#3
20230076588
2023-03-09

MONITORING SIGNAL LIGHT OUTPUT APPARATUS, SUBMARINE APPARATUS, AND OPTICAL COMMUNICATION SYSTEM

#4
20220085889
2022-03-17

Colorless splitter/combiner cable assembly

#5
20210281323
2021-09-09

Pluggable optical amplifier for datacenter interconnects

#6
20210175972
2021-06-10

Device and method for processing an optical signal

#7
20190207679
2019-07-04

Free-space optical communication links with improved sensitivity

#8
20180309563
2018-10-25

Relay transmission system, relay transmission method, and relay transmission device

#9
20180269976
2018-09-20

System and method of optical fiber communication

#10
20140270782
2014-09-18

Bidirectional submarine repeater using unidirectional amplification

#11
20130101297
2013-04-25

Reflective semiconductor optical amplifier for optical networks

#12
20100266293
2010-10-21

Relay apparatus, signal processing apparatus and optical communication system

#13
20100103506
2010-04-29

Reconfigurable optical amplifier, reversible optical circulator, and optical signal transmission system

#14
20090175626
2009-07-09

Optical transceiver amplifier

#15
20080285982
2008-11-20

Single fiber duplex optical transport

#16
20080031622
2008-02-07

Bidirectional Router and a Method of Bidirectional Amplification

#17
20070127113
2007-06-07

Optical modulation apparatus

#18
20060024066
2006-02-02

Optical modulating device

#19
20050254819
2005-11-17

Optical in-line amplifier and wavelength-division multiplexer