JP4908079B2 - 光伝送装置および光分岐挿入装置 - Google Patents

光伝送装置および光分岐挿入装置 Download PDF

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Publication number
JP4908079B2
JP4908079B2 JP2006173915A JP2006173915A JP4908079B2 JP 4908079 B2 JP4908079 B2 JP 4908079B2 JP 2006173915 A JP2006173915 A JP 2006173915A JP 2006173915 A JP2006173915 A JP 2006173915A JP 4908079 B2 JP4908079 B2 JP 4908079B2
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Japan
Prior art keywords
optical
unit
light
reflected light
output
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Expired - Fee Related
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JP2006173915A
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English (en)
Japanese (ja)
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JP2008005302A5 (enExample
JP2008005302A (ja
Inventor
靖弘 内山
博行 中野
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Hitachi Ltd
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Hitachi Ltd
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Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP2006173915A priority Critical patent/JP4908079B2/ja
Priority to US11/752,331 priority patent/US7697845B2/en
Publication of JP2008005302A publication Critical patent/JP2008005302A/ja
Publication of JP2008005302A5 publication Critical patent/JP2008005302A5/ja
Priority to US12/724,881 priority patent/US7953321B2/en
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Publication of JP4908079B2 publication Critical patent/JP4908079B2/ja
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    • 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
    • H04J14/0283—WDM ring architectures
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0201—Add-and-drop multiplexing
    • H04J14/0202—Arrangements therefor
    • H04J14/0204—Broadcast and select arrangements, e.g. with an optical splitter at the input before adding or dropping
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0201—Add-and-drop multiplexing
    • H04J14/0202—Arrangements therefor
    • H04J14/0206—Express channels arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0201—Add-and-drop multiplexing
    • H04J14/0202—Arrangements therefor
    • H04J14/021—Reconfigurable arrangements, e.g. reconfigurable optical add/drop multiplexers [ROADM] or tunable optical add/drop multiplexers [TOADM]
    • H04J14/0212—Reconfigurable arrangements, e.g. reconfigurable optical add/drop multiplexers [ROADM] or tunable optical add/drop multiplexers [TOADM] using optical switches or wavelength selective switches [WSS]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0201—Add-and-drop multiplexing
    • H04J14/0202—Arrangements therefor
    • H04J14/0213—Groups of channels or wave bands arrangements
    • 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
    • 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
    • H04J14/0221—Power control, e.g. to keep the total optical power constant
    • 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

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optical Communication System (AREA)
JP2006173915A 2006-06-23 2006-06-23 光伝送装置および光分岐挿入装置 Expired - Fee Related JP4908079B2 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2006173915A JP4908079B2 (ja) 2006-06-23 2006-06-23 光伝送装置および光分岐挿入装置
US11/752,331 US7697845B2 (en) 2006-06-23 2007-05-23 Optical transmission equipment and optical add-drop multiplexer
US12/724,881 US7953321B2 (en) 2006-06-23 2010-03-16 Optical transmission equipment and optical add-drop multiplexer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2006173915A JP4908079B2 (ja) 2006-06-23 2006-06-23 光伝送装置および光分岐挿入装置

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP2011112995A Division JP5190132B2 (ja) 2011-05-20 2011-05-20 光伝送装置

Publications (3)

Publication Number Publication Date
JP2008005302A JP2008005302A (ja) 2008-01-10
JP2008005302A5 JP2008005302A5 (enExample) 2009-04-09
JP4908079B2 true JP4908079B2 (ja) 2012-04-04

Family

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Family Applications (1)

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JP2006173915A Expired - Fee Related JP4908079B2 (ja) 2006-06-23 2006-06-23 光伝送装置および光分岐挿入装置

Country Status (2)

Country Link
US (2) US7697845B2 (enExample)
JP (1) JP4908079B2 (enExample)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7634196B2 (en) * 2004-10-06 2009-12-15 Cisco Technology, Inc. Optical add/drop multiplexer with reconfigurable add wavelength selective switch
JP4908079B2 (ja) * 2006-06-23 2012-04-04 株式会社日立製作所 光伝送装置および光分岐挿入装置
US20100027998A1 (en) * 2008-07-31 2010-02-04 Nortel Networks Limited Optical roundabout switch
US20100061726A1 (en) * 2008-09-09 2010-03-11 Giovanni Barbarossa Dynamically Reconfiguring An Optical Network Using An Ethernet Switch
EP2587693A4 (en) * 2010-06-24 2017-05-31 Mitsubishi Electric Corporation Optical add-drop multiplexer (oadm) device
EP2464035B1 (en) * 2010-12-13 2017-10-04 ADVA Optical Networking SE A method and device for monitoring a detachable fiber-optic connection, especially in a fiber-optic transmission device or system
CN108055419A (zh) * 2012-12-20 2018-05-18 三菱电机株式会社 导光体及图像读取装置
JP6468607B2 (ja) * 2016-07-08 2019-02-13 日本電信電話株式会社 光演算器
US10031287B1 (en) 2017-02-02 2018-07-24 International Business Machines Corporation Waveguide architecture for photonic neural component with multiplexed optical signals on inter-node waveguides
US10107959B2 (en) 2017-02-02 2018-10-23 International Business Machines Corporation Waveguide architecture for photonic neural component
CN107121998B (zh) * 2017-04-18 2019-03-01 深圳市联赢激光股份有限公司 一种安全控制系统及激光设备

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3187071B2 (ja) * 1991-04-24 2001-07-11 富士通株式会社 光増幅器の高光出力保護回路
JP3128287B2 (ja) * 1991-09-25 2001-01-29 富士通株式会社 出力端開放検出回路付光増幅器
JPH08265257A (ja) * 1995-03-20 1996-10-11 Fujitsu Ltd 光伝送システム
JPH09200130A (ja) 1996-01-24 1997-07-31 Sumitomo Electric Ind Ltd コネクタ外れ検出回路付き光増幅器及び光増幅方法
JP2001144687A (ja) 1999-11-11 2001-05-25 Matsushita Electric Ind Co Ltd 光出力制御回路
JP2001358392A (ja) * 2000-06-13 2001-12-26 Oki Electric Ind Co Ltd 安全光移行制御方法および光ファイバ増幅器
JP2002050816A (ja) * 2000-08-02 2002-02-15 Fujitsu Ltd 光増幅器
JP3641438B2 (ja) * 2001-05-08 2005-04-20 日本電気通信システム株式会社 光通信装置
JP4908079B2 (ja) * 2006-06-23 2012-04-04 株式会社日立製作所 光伝送装置および光分岐挿入装置

Also Published As

Publication number Publication date
US7953321B2 (en) 2011-05-31
US20100172644A1 (en) 2010-07-08
US7697845B2 (en) 2010-04-13
US20070297802A1 (en) 2007-12-27
JP2008005302A (ja) 2008-01-10

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