JP4088293B2 - 双方向波長分割多重方式の自己治癒受動型光加入者網 - Google Patents
双方向波長分割多重方式の自己治癒受動型光加入者網 Download PDFInfo
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- JP4088293B2 JP4088293B2 JP2004374380A JP2004374380A JP4088293B2 JP 4088293 B2 JP4088293 B2 JP 4088293B2 JP 2004374380 A JP2004374380 A JP 2004374380A JP 2004374380 A JP2004374380 A JP 2004374380A JP 4088293 B2 JP4088293 B2 JP 4088293B2
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- 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
- H04B10/03—Arrangements for fault recovery
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
- H04J14/0287—Protection in WDM systems
- H04J14/0293—Optical channel protection
- H04J14/0294—Dedicated protection at the optical channel (1+1)
-
- 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
- H04B10/25—Arrangements specific to fibre transmission
- H04B10/2581—Multimode transmission
-
- 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
- H04B10/272—Star-type networks or tree-type networks
-
- 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
-
- 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
- H04J14/0278—WDM optical network architectures
- H04J14/0282—WDM tree architectures
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
- H04J14/0226—Fixed carrier allocation, e.g. according to service
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Computing Systems (AREA)
- Optical Communication System (AREA)
- Small-Scale Networks (AREA)
Description
110 中央基地局
190 地域基地局
180 動作用幹線光ファイバー
185 保護用幹線光ファイバー
120−1〜120−m 下向光源
130−1〜130−m 上向光受信機
140−1〜140−m 波長分割多重フィルタ
160 第1の波長分割多重化器
200 第2の波長分割多重化器
230−1〜230−m 動作用分配光ファイバー
240−1〜240−m 保護用分配光ファイバー
250−1〜250−m 加入者装置
260−1〜260−m 第1のスイッチ
270−1〜270−m 第1の波長分割多重フィルタ
280−1〜280−m 上向光源
290−1〜290−m 下向光受信機
Claims (5)
- 受動型光加入者網であって、
第1及び第2の幹線光ファイバーを介して少なくとも一つの地域基地局と接続された中央基地局を含み、
前記中央基地局は、
複数の下向光信号を生成する複数の下向光源と、
前記複数の下向光信号を波長分割多重化して多重化された下向光信号を生成するための第1の波長分割多重化器と、
前記多重化された下向光信号をパワー分割して前記第1及び第2の幹線光ファイバーのそれぞれに伝送するための第1の光分配器と、
監視用光信号を前記第1の波長分割多重化器に出力すると共に、前記第1の波長分割多重化器から入力された戻り監視用光信号に基づいて前記第1及び第2の幹線光ファイバーの障害の有無を検出するための監視器と、
を含み、
前記監視器は、
前記第1の幹線光ファイバーと第2の幹線光ファイバーとの間での光信号の分岐比に基づいて各幹線光ファイバーにおける障害の有無を検出すること
を特徴とする双方向波長分割多重方式の自己治癒受動型光加入者網。 - 前記中央基地局は、
広波長帯域の第1の注入光を生成する第1の広帯域光源と、
前記第1の波長分割多重化器と前記第1の光分配器との間に配置され、前記第1の注入光を前記第1の波長分割多重化器に供給するための第2の光分配器と、
広波長帯域の第2の注入光を生成する第2の広帯域光源をさらに含み、
前記第2の光分配器は、前記第2の注入光を前記第1の光分配器に供給すること
を特徴とする請求項1に記載の双方向波長分割多重方式の自己治癒受動型光加入者網。 - 前記地域基地局は、
前記第1及び第2の幹線光ファイバーとそれぞれ接続された第1及び第2の入出力ポートと、
各対が加入者装置とそれぞれ接続された複数対の分配光ファイバーと、
前記第1及び第2の幹線光ファイバーの中のいずれか選択された一方から受信した多重化された光信号を逆多重化し、前記逆多重化された光信号を当該分配光ファイバー対に出力すると共に、前記分配光ファイバー対の中のいずれか選択された一方から受信した光信号を多重化し、前記多重化された光信号を前記第1及び第2の幹線光ファイバーの中のいずれか選択された一方に出力する波長分割多重化器と、
を含むことを特徴とする請求項1に記載の双方向波長分割多重方式の自己治癒受動型光加入者網。 - それぞれ当該分配光ファイバー対と接続された複数の加入者装置をさらに含み、
前記加入者装置は、
第1乃至第3のポートを有し、前記第1及び第2のポートは、当該分配光ファイバー対と接続され、前記分配光ファイバー対の中のいずれか一方と前記第3のポートとを選択的に接続するためのスイッチと、
前記スイッチの第3のポートから出力された下向光信号を受信するための下向光受信機と、
を含むことを特徴とする請求項3に記載の双方向波長分割多重方式の自己治癒受動型光加入者網。 - 前記加入者装置は、フィルタ及び上向光送信機を備えており、
このフィルタは前記スイッチの第3のポートと接続される第1のポートと、前記上向光送信機と接続される第2のポートと、前記下向光受信機と接続される第3のポートと、を有し、さらに前記フィルタは、前記下向光信号と前記上向光送信機により生成された上向光信号を分離すること
を特徴とする請求項4に記載の双方向波長分割多重方式の自己治癒受動型光加入者網。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020040000115A KR100566293B1 (ko) | 2004-01-02 | 2004-01-02 | 양방향 파장분할다중 방식의 자기 치유 수동형 광 가입자망 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2005198286A JP2005198286A (ja) | 2005-07-21 |
JP4088293B2 true JP4088293B2 (ja) | 2008-05-21 |
Family
ID=34709295
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2004374380A Expired - Fee Related JP4088293B2 (ja) | 2004-01-02 | 2004-12-24 | 双方向波長分割多重方式の自己治癒受動型光加入者網 |
Country Status (4)
Country | Link |
---|---|
US (1) | US7174102B2 (ja) |
JP (1) | JP4088293B2 (ja) |
KR (1) | KR100566293B1 (ja) |
CN (1) | CN1324846C (ja) |
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KR100605899B1 (ko) * | 2004-01-09 | 2006-08-02 | 삼성전자주식회사 | 파장 주입 방식을 사용한 파장분할 다중방식 자기치유수동형 광가입자망 |
KR100584418B1 (ko) * | 2004-12-01 | 2006-05-26 | 삼성전자주식회사 | 파장 분할 다중 방식 수동형 광 가입자 망 |
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-
2004
- 2004-01-02 KR KR1020040000115A patent/KR100566293B1/ko not_active IP Right Cessation
- 2004-08-13 US US10/918,279 patent/US7174102B2/en not_active Expired - Fee Related
- 2004-11-04 CN CNB200410090357XA patent/CN1324846C/zh not_active Expired - Fee Related
- 2004-12-24 JP JP2004374380A patent/JP4088293B2/ja not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
CN1638341A (zh) | 2005-07-13 |
US20050147412A1 (en) | 2005-07-07 |
CN1324846C (zh) | 2007-07-04 |
KR100566293B1 (ko) | 2006-03-30 |
KR20050071796A (ko) | 2005-07-08 |
JP2005198286A (ja) | 2005-07-21 |
US7174102B2 (en) | 2007-02-06 |
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