WO2021237229A3 - Efficient protection switching in wdm-pon - Google Patents

Efficient protection switching in wdm-pon Download PDF

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Publication number
WO2021237229A3
WO2021237229A3 PCT/US2021/048483 US2021048483W WO2021237229A3 WO 2021237229 A3 WO2021237229 A3 WO 2021237229A3 US 2021048483 W US2021048483 W US 2021048483W WO 2021237229 A3 WO2021237229 A3 WO 2021237229A3
Authority
WO
WIPO (PCT)
Prior art keywords
pon
wdm
protection switching
wavelength multiplexer
efficient protection
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US2021/048483
Other languages
French (fr)
Other versions
WO2021237229A2 (en
Inventor
Frank Effenberger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
FutureWei Technologies Inc
Original Assignee
FutureWei Technologies Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by FutureWei Technologies Inc filed Critical FutureWei Technologies Inc
Publication of WO2021237229A2 publication Critical patent/WO2021237229A2/en
Publication of WO2021237229A3 publication Critical patent/WO2021237229A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0227—Operation, administration, maintenance or provisioning [OAMP] of WDM networks, e.g. media access, routing or wavelength allocation
    • H04J14/0241—Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths
    • H04J14/0242—Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths in WDM-PON
    • H04J14/0245—Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths in WDM-PON for downstream transmission, e.g. optical line terminal [OLT] to ONU
    • H04J14/0246—Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths in WDM-PON for downstream transmission, e.g. optical line terminal [OLT] to ONU using one wavelength per ONU
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/27—Arrangements for networking
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0227—Operation, administration, maintenance or provisioning [OAMP] of WDM networks, e.g. media access, routing or wavelength allocation
    • H04J14/0241—Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths
    • H04J14/0242—Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths in WDM-PON
    • H04J14/0249—Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths in WDM-PON for upstream transmission, e.g. ONU-to-OLT or ONU-to-ONU
    • H04J14/025—Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths in WDM-PON for upstream transmission, e.g. ONU-to-OLT or ONU-to-ONU using one wavelength per ONU, e.g. for transmissions from-ONU-to-OLT or from-ONU-to-ONU
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0278—WDM optical network architectures
    • H04J14/0282—WDM tree architectures

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optical Communication System (AREA)
  • Computing Systems (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)

Abstract

An optical wavelength multiplexer having a second output port shifted by one channel relative to a first output port. Because of the shift, the wavelength multiplexer is able to select one of two different wavelengths on several of the channels to protect from failures in a feeder fiber or a transceiver. Thus, the wavelength multiplexer provides protection against failures within the passive optical network (PON).
PCT/US2021/048483 2020-12-09 2021-08-31 Efficient protection switching in wdm-pon Ceased WO2021237229A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US202063123368P 2020-12-09 2020-12-09
US63/123,368 2020-12-09

Publications (2)

Publication Number Publication Date
WO2021237229A2 WO2021237229A2 (en) 2021-11-25
WO2021237229A3 true WO2021237229A3 (en) 2022-03-03

Family

ID=78086876

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2021/048483 Ceased WO2021237229A2 (en) 2020-12-09 2021-08-31 Efficient protection switching in wdm-pon

Country Status (1)

Country Link
WO (1) WO2021237229A2 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9768862B2 (en) * 2013-11-01 2017-09-19 Mitsubishi Electric Corporation Slave station apparatus, master station apparatus, control device, communication system, and wavelength switching method
US20190182569A1 (en) * 2014-07-15 2019-06-13 Huawei Technologies Co., Ltd. Passive optical network communications method, apparatus and system
WO2020063991A1 (en) * 2018-09-29 2020-04-02 深圳前海达闼云端智能科技有限公司 Pon network, method and apparatus for pon network and robot system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9768862B2 (en) * 2013-11-01 2017-09-19 Mitsubishi Electric Corporation Slave station apparatus, master station apparatus, control device, communication system, and wavelength switching method
US20190182569A1 (en) * 2014-07-15 2019-06-13 Huawei Technologies Co., Ltd. Passive optical network communications method, apparatus and system
WO2020063991A1 (en) * 2018-09-29 2020-04-02 深圳前海达闼云端智能科技有限公司 Pon network, method and apparatus for pon network and robot system

Also Published As

Publication number Publication date
WO2021237229A2 (en) 2021-11-25

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