JP2008520124A - 相互注入されたfp−ldを用いる広帯域光源の注入による波長固定式fp−ldにおける光変調方法およびシステム - Google Patents
相互注入されたfp−ldを用いる広帯域光源の注入による波長固定式fp−ldにおける光変調方法およびシステム Download PDFInfo
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- 239000007924 injection Substances 0.000 title claims abstract description 55
- 238000000034 method Methods 0.000 title claims abstract description 36
- 230000003287 optical effect Effects 0.000 claims abstract description 41
- 230000005540 biological transmission Effects 0.000 claims abstract description 35
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- 238000004891 communication Methods 0.000 claims description 4
- 230000002269 spontaneous effect Effects 0.000 claims description 3
- 230000007175 bidirectional communication Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 5
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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
- H04B10/50—Transmitters
- H04B10/516—Details of coding or modulation
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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
- H04B10/50—Transmitters
- H04B10/516—Details of coding or modulation
- H04B10/5167—Duo-binary; Alternative mark inversion; Phase shaped binary transmission
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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
-
- 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
- H04B10/50—Transmitters
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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
- H04B10/50—Transmitters
- H04B10/501—Structural aspects
- H04B10/503—Laser transmitters
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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
- H04B10/50—Transmitters
- H04B10/516—Details of coding or modulation
- H04B10/5162—Return-to-zero modulation schemes
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Abstract
Description
Claims (22)
- 低周波数領域に1/f雑音を有する光源を使用する光通信システムにおける光変調方法であって、送信側で、光を、前記1/f雑音が存在する領域に信号スペクトルをもたない変調方式に変調するステップと、受信側で、伝送信号に影響を与えることなく前記1/f雑音を取り除き、その結果、前記光通信システムの性能を改善するステップとを含む光変調方法。
- 前記低周波数領域に1/f雑音を有する前記光源が、外部から注入を受けるBLSによる波長固定式FP−LDである請求項1に記載の光変調方法。
- 前記波長固定式FP−LDが反射防止コーティングを施されている請求項2に記載の光変調方法。
- 前記外部から注入を受けるBLSが、FP−LDの相互注入を用いるBLSである請求項2に記載の光変調方法。
- 前記外部から注入を受けるBLSが、LED、増幅自然放出光発生ダイオード、スーパー・ルミネッセント・ダイオードからなるグループから選択された1つである請求項2に記載の光変調方法。
- 前記FP−LDの相互注入を用いるBLSが、それぞれに反射防止コーティングを施されたFP−LDを用いる請求項4に記載の光変調方法。
- 前記FP−LDの相互注入を用いるBLSが、利得帯域の広い広帯域FP−LDを用いることによって帯域幅を向上させる請求項4に記載の光変調方法。
- 前記光変調方法が、送信側で信号を変調する際、バイポーラ方式、RZ(RZ−AMI)、マンチェスタ、差分マンチェスタ、B8ZS、HDB3、擬似三進数など低周波数領域に電気成分をもたない変調方式を利用する請求項4に記載の光変調方法。
- 前記光変調方法が、受信側で、帯域通過フィルタ(BPF)を使用して、伝送信号に影響を与えることなく前記1/f雑音を取り除く請求項1または4に記載の光変調方法。
- 2つのFP−LD間での相互注入により構築されるBLSおよび光伝送に使用される光ファイバと、
前記BLSの複数の発振モードからの光をn個からなるグループにフィルタする第1AWGと、
前記第1AWGを介して波長の固定された光を出力するn個のFP−LDと、
F−P LDを含む加入者の送信端に設けられた符号器と、
前記第1AWGと光ファイバを介して入力される光を出力するサーキュレータと、
前記第1AWGからのWDM信号をn個からなるグループに逆多重化する第2AWGと、
前記第2AWGからの出力を受信する受信器(RX)を含む受信端に設けられた復号器とを含む光ネットワーク。 - 前記光ネットワークが、十分な伝送パワーが供給されるように、前記BLSと前記サーキュレータとの間に接続されたEDFAをさらに含む請求項10に記載の光ネットワーク。
- 前記光ネットワークが、前記BLSの偏光を波長の固定された光を出力するFP−LDの偏光に合わせるために、前記BLSと前記サーキュレータとの間に接続された偏光制御器(PC)をさらに含む請求項10に記載の光ネットワーク。
- 前記n個のFP−LDが、それぞれ反射防止コーティングを施されている請求項10に記載の光ネットワーク。
- n個のFP−LDの温度がヒータとTECによって制御される請求項10に記載の光ネットワーク。
- 前記n個のFP−LDが、変調されて、外部から注入を受ける前記BLSによる波長固定式FP−LD特性をもつ請求項10に記載の光ネットワーク。
- 前記送信端の前記符号器と前記受信端の前記復号器が、バイポーラ方式、RZ(RZ−AMI)、マンチェスタ、差分マンチェスタ、B8ZS、HDB3、擬似三進数など低周波数領域に電気成分をもたない変調方式を利用する請求項10に記載の光ネットワーク。
- 前記光ネットワークが、前記第2AWGからの出力を受信する受信器(RX)を含む前記受信端で低周波数成分を遮断する帯域通過フィルタ(BPF)をさらに含む請求項10に記載の光ネットワーク。
- 前記光ネットワークが、双方向通信用光伝送装置として使用される請求項10に記載の光ネットワーク。
- 前記BLSの異なる波長帯域をもつ光が、それぞれセンター局と加入者端に注入される請求項10に記載の光ネットワーク。
- 前記第1AWGを介して波長の固定された光を出力する前記n個のFP−LDのそれぞれと前記送信端を含む符号器、および帯域通過フィルタ(BPF)と前記受信端を含む復号器が、1つのユニットに組み合わされた請求項10に記載の光ネットワーク。
- 帯域通過フィルタ(BPF)、前記受信端を含む、前記第2AWGからの出力を受信する受信器(RX)を含む受信端に設けられた復号器、および波長の固定された光を出力する前記n個のFP−LDのそれぞれと前記送信端を含む符号器が、1つのユニットに組み合わされた請求項10に記載の光ネットワーク。
- 前記受信端への入力と前記送信端からの出力が、WDMフィルタを介して分割された後、伝送される請求項20または21に記載の光ネットワーク。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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KR10-2004-0091078 | 2004-11-09 | ||
KR1020040091078A KR100680815B1 (ko) | 2004-11-09 | 2004-11-09 | Fp- ld의 상호 주입을 이용한 광대역 비간섭성 광원을주입하여 파장 고정된 fp- ld의 광 변조방법 및 그시스템 |
PCT/KR2005/003767 WO2006052075A1 (en) | 2004-11-09 | 2005-11-08 | Optical modulation method and system in wavelength locked fp-ld by injecting broadband light source using mutually injected fp-ld |
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JP2008520124A true JP2008520124A (ja) | 2008-06-12 |
JP4773454B2 JP4773454B2 (ja) | 2011-09-14 |
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US (1) | US8073334B2 (ja) |
EP (1) | EP1810426B1 (ja) |
JP (1) | JP4773454B2 (ja) |
KR (1) | KR100680815B1 (ja) |
CN (1) | CN101057425B (ja) |
WO (1) | WO2006052075A1 (ja) |
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- 2004-11-09 KR KR1020040091078A patent/KR100680815B1/ko active IP Right Grant
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- 2005-11-08 WO PCT/KR2005/003767 patent/WO2006052075A1/en active Application Filing
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- 2005-11-08 JP JP2007540265A patent/JP4773454B2/ja not_active Expired - Fee Related
- 2005-11-08 EP EP05820436.3A patent/EP1810426B1/en not_active Not-in-force
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2012525771A (ja) * | 2009-04-28 | 2012-10-22 | アルカテル−ルーセント | 連続する同一ディジットの低減のためのシステムおよび方法 |
JP2013160956A (ja) * | 2012-02-06 | 2013-08-19 | Fujitsu Ltd | 光送信器および光変調器のバイアス制御方法 |
US9240838B2 (en) | 2012-02-06 | 2016-01-19 | Fujitsu Limited | Optical transmitter and method for controlling bias for optical modulator |
Also Published As
Publication number | Publication date |
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JP4773454B2 (ja) | 2011-09-14 |
US20090196612A1 (en) | 2009-08-06 |
KR20060042486A (ko) | 2006-05-15 |
WO2006052075A1 (en) | 2006-05-18 |
EP1810426A1 (en) | 2007-07-25 |
CN101057425B (zh) | 2015-07-01 |
CN101057425A (zh) | 2007-10-17 |
EP1810426A4 (en) | 2010-01-13 |
US8073334B2 (en) | 2011-12-06 |
KR100680815B1 (ko) | 2007-02-08 |
EP1810426B1 (en) | 2013-05-29 |
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