JP2000514977A - 光信号を同期して受信し、変調する遠隔通信システム - Google Patents
光信号を同期して受信し、変調する遠隔通信システムInfo
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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
- H04B10/29—Repeaters
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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
- H04B10/25—Arrangements specific to fibre 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
- H04B10/25—Arrangements specific to fibre transmission
- H04B10/2575—Radio-over-fibre, e.g. radio frequency signal modulated onto an optical carrier
- H04B10/25752—Optical arrangements for wireless networks
- H04B10/25758—Optical arrangements for wireless networks between a central unit and a single remote unit by means of an optical fibre
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/015—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on semiconductor elements having potential barriers, e.g. having a PN or PIN junction
- G02F1/0155—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on semiconductor elements having potential barriers, e.g. having a PN or PIN junction modulating the optical absorption
- G02F1/0157—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on semiconductor elements having potential barriers, e.g. having a PN or PIN junction modulating the optical absorption using electro-absorption effects, e.g. Franz-Keldysh [FK] effect or quantum confined stark effect [QCSE]
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Abstract
Description
Claims (1)
- 【特許請求の範囲】 1.光通信システムの第1のノードと1または複数の別のノードとの間の通信方 法であり: i)第1のノードにおいて、第1の別のノードから光ファイバリンク上を送 られる光信号を受取る段階と; ii)第1のノードにおいて、電子−光装置を使用して、光信号によって搬送 される情報を表す電気信号を生成する光信号を検出する段階と; iii)前記電子−光装置を使用して、受信した光信号に情報搬送変調を行い、 こうして変調した信号を光ファイバリンクへ供給して、それを第2の別のノード へ送る段階とで成り;同じDC動作状態のもとで光−電子装置で段階ii)および 段階iii)を実行する通信方法。 2.段階iiおよび段階iiiを同時に実行する請求項1記載の方法。 3.前記第1の別のノードおよび第2の別のノードが単一のノードである請求項 1または2記載の方法。 4.電子−光装置が電子吸収変調器である請求項1乃至3の何れか1項記載の方 法。 5.前記電気信号がRFまたはマイクロ波信号である請求項1乃至4の何れか1 項記載の方法。 6.前記電気信号がアンテナに供給される請求項5記載の方法。 7.前記段階iiiにおいて、前記情報搬送変調がRFまたはマイクロ波信号形式 である請求項1乃至6の何れか1項記載の方法。 8.前記情報搬送信号が、アンテナから供給されるRFまたはマイクロ波信号で ある請求項7記載の方法。 9.請求項6のアンテナおよび請求項8のアンテナが単一のアンテナによって構 成される請求項6に依存する請求項8記載の方法。 10.段階iiおよび段階iiiが無線またはマイクロ波基地局あるいは分配点にお いて実行される請求項5乃至9の何れか1項記載の方法。 11.基地局が使用中にGSMおよびDECTシステムを支援する請求項10記 載の方法。 12.光通信ネットワークで使用され;光入力ポート、光出力ポート、および光 制御信号を供給するための電気コンタクトをもつ光変調器を含む端末であり: 光ネットワークへ接続され、ネットワークから光入力を受取り、それを変調 器の入力ポートへ供給するための光入力ポートと; 光ネットワークへ接続され、変調器の出力ポートからネットワークへ光信号 を送るための光出力ポートと; 変調器の電気コンタクトに接続され、電気入力信号を変調器へ供給して、変 調器の入力ポートで受信した光入力を、変調器によって加えられた変調を実行す る変調器の出力ポートから出力するための電気入力手段と; 変調器の電気コンタクトに接続され、変調器の入力光ポートで、変調器が光 入力信号の受信した結果として、変調器によって生成される電気信号を出力する ための電気出力手段とを備える光通信ネットワークで使用される端末。 13.さらに変調器にバイアスをかけるための電源を含み、そのレベルは変調器 へ向かう電気入力信号と変調器によって生成された電気信号との間の干渉が、変 調器の入力光ポートで光入力信号の変調器による受信結果として、最小になるレ ベルである請求項12記載の端末。 14.前記端末の電気コンタクトはアンテナ、別の通信ネットワーク、モデム、 または顧客構内装置の部品に接続されている請求項12または13の何れか1項 記載の端末。 15.変調器が電子−吸収変調器である請求項12乃至14の何れか1項記載の 端末。 16.端末が基地局または中央オフィスから離れて配置されている請求項12乃 至15の何れか1項記載の端末。 17.遠隔の端末を特色とは光通信ネットワークであり、前記端末が電子−光装 置を含み、 (i)光通信ネットワークの第1の部分からの到来光信号を検出しながら同 時に、 (ii)前記到来光信号を変調し、前記光信号を光通信ネットワークの別の部 分に送ることを特徴とする光通信ネットワーク。 18.光信号がアナログ信号である請求項17記載の光通信ネットワーク。 19.光通信ネットワークが周波数分割多重システムである請求項17または1 8記載の光通信ネットワーク。 20.請求項12乃至16の何れか1項に記載された、端末を含む光通信ネット ワーク。 21.請求項12乃至16の何れか1項に記載された、直列接続の複数の端末を 含む光通信ネットワーク。 22.光信号が個々に受取られて、単一の電子−光装置を制御することによって 同時に変調されることを特徴とする光通信ネットワークを動作する方法。 23.光変調器であって、光入力ポート、光出力ポート、電気制御信号を該変調 器へ供給するための電気コンタクトを有するものと; 自由空間を伝送される無線周波数もしくはマイクロ波信号を受取る第1のア ンテナ手段と; 無線周波数もしくはマイクロ波信号の自由空間伝送のための第2のアンテナ 手段と; 光入力を受取り、それを変調器の入力ポートヘ供給するために光ファイバフ ィードへの接続用の光入力ポートと; 変調器の出力ポートから光信号を送るために、出力光ファイバへ接続用の光 出力ポートとを含み; 前記第1のアンテナ手段が、変調器の電気コンタクトへ動作するように接続 され、第1のアンテナ手段によって受信した無線周波数もしくはマイクロ波信号 を変調器の電気コンタクトに供給して、変調器の入力ポートで受信した光信号を 変調器によって加えられた変調を実行する変調器の出力ポートから出力し;第2 のアンテナ手段が変調器の電気コンタクトに動作するように接続され、変調器の 光入力ポートで光入力信号の変調器が受信結果として、変調器によって生成され る無線周波数またはマイクロ波信号を出力する無線もしくはマイクロ波分配ポイ ントまたは基地局。 24.第1および第2のアンテナ手段が単一のアンテナである請求項23記載の 基地局。 25.変調器の光入力ポートおよび光出力ポートが共通であり、変調器が反射モ ードで動作するようにされている請求項23または24記載の基地局。 26.基地局の光入力ポートおよび光出力ポートが共通であり、使用時に光信号 が双方向に通る単一の光ファイバ供給に接続することができる請求項23乃至2 5の何れか1項記載の基地局。 27.光変調器が電子吸収変調器である請求項23乃至26の何れか1項記載の 基地局。 28.基地局の光入力および出力ポートがそれぞれ光ファイバに動作するように 接続されて、そこから光入力を受取り、そこへ光信号を出力する請求項23乃至 27の何れか1項記載の基地局。 29.光ファイバフィードが光信号のソースへ動作するように接続され、該ソー スが光信号を送出するように構成されており、該光信号が変調によって検出可能 であり、前記第2のアンテナ手段による放射に適したRFまたはマイクロ波成分 を含む請求項28記載の基地局。 30.光信号のソースが第1の波長λ1で前記光信号を送出し、さらに変調器が 変調する波長λ2の光搬送波を送出し、λ1がλ2よりも短い請求項29記載の 基地局。 31.基地局がRFまたはマイクロ波信号を少なくとも2つのシステムに、例え ばDECT、GSM、および無線LANの少なくとも2つに供給する請求項28 乃至30の何れか1項記載の基地局。 32.無線伝送システム用のアンテナ装置であり:無線周波数信号の送受信用の アンテナ手段と;光入力および出力ポートと;光入力ポートと出力ポートとの間 の光路内に配置され、アンテナ手段に動作するように接続され、使用時にRF信 号を受信し、前記光入力ポートを介して受信した光に対応する変調を行うように 構成され、該光を出力ポートへ送る光変調器と;使用時に前記入力ポートを介し て光信号を受信するように構成され、アンテナ手段に動作するように接続されて 、前記光信号内に存在するRF変調がアンテナ手段から外された後、該アンテナ 手段から放射されるようにした出力検出手段とを含むアンテナ装置。 33.アンテナ手段が、受信および伝送の両方に作用する単一のアンテナで成る 請求項32記載の装置。 34.アンテナ手段が、少なくとも2つのアンテナを含む請求項32記載の装置 。 35.受信および送信用に異なるアンテナを備えた請求項34記載の装置。 36.変調器が電子−吸収変調器である請求項32乃至35の何れか1項記載の 装置。 37.前記装置が基地局または中央オフィスから遠隔に配置され、そこから装置 が使用時に、装置を基地局またはオフィスへリンクする光ファイバ上で無線周波 数信号を受取り、無線周波数信号が装置のアンテナ手段から実質的に放射される 請求項32乃至35の何れか1項記載の装置。 38.請求項32乃至37の何れか1項記載の複数のアンテナ装置を含むセルラ 無線システム。 39.請求項23乃至31の何れか1項記載の第1の複数の基地局と; 請求項23乃至31の何れか1項記載の第2の複数の基地局と; 別個の地理的領域にサービスする第1および第2の複数の基地局と; 光搬送波発生器、および無線周波数信号を前記光搬送波に加える手段を含む 光ソース手段と; 光搬送波および加えられた無線周波数信号を前記第1の複数の基地局へ供給 する1または複数の光ファイバリンクの第1のグループと; 光搬送波および加えられた無線周波数信号を前記第2の複数の基地局へ供給 する1または複数の光ファイバリンクの第2のグループと; 第1または第2のグループのファイバリンク間、したがって前記第1および 第2の複数の基地局間で前記搬送波を選択的にスイッチするスイッチング手段と を含むセルラ無線システムであって; 関連の複数の基地局の需要について実際のまたは予測されるレベルにしたが って、前記第1および第2のグループのファイバリンク間でスイッチすることに よって、光ソース手段が第1および第2の複数の基地局間で共有されるセルラ無 線システム。 40.第1の複数の基地局が、1または複数のサイトまたは地理的領域に対して は関連のセルラ無線トラヒックレベルが1日のうち第1の最大値になる傾向があ る時間にサービスし、第2の複数の基地局が1または複数のサイトまたは地理的 領域に対しては関連のセルラ無線トラヒックレベルが、前記1日の第1回目とは 異なる1日のうち第2の最大値になる傾向がある時間にサービスする請求項39 記載のシステム。
Applications Claiming Priority (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP96305315 | 1996-07-19 | ||
GB9624909.9 | 1996-11-29 | ||
GBGB9624909.9A GB9624909D0 (en) | 1996-11-29 | 1996-11-29 | telecommunications network |
GB9710394.9 | 1997-05-20 | ||
GB96305315.2 | 1997-05-20 | ||
GBGB9710394.9A GB9710394D0 (en) | 1997-05-20 | 1997-05-20 | Telecommunicatios network |
PCT/GB1997/001958 WO1998004057A1 (en) | 1996-07-19 | 1997-07-21 | Telecommunications system simultaneously receiving and modulating an optical signal |
Publications (2)
Publication Number | Publication Date |
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JP2000514977A true JP2000514977A (ja) | 2000-11-07 |
JP4394166B2 JP4394166B2 (ja) | 2010-01-06 |
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JP50669998A Expired - Fee Related JP4394166B2 (ja) | 1996-07-19 | 1997-07-21 | 光信号を同期して受信し、変調する遠隔通信システム |
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EP (1) | EP0913039A1 (ja) |
JP (1) | JP4394166B2 (ja) |
KR (1) | KR100555996B1 (ja) |
CN (1) | CN100393005C (ja) |
AU (1) | AU717824B2 (ja) |
CA (1) | CA2253413C (ja) |
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- 1997-07-21 CN CNB97196551XA patent/CN100393005C/zh not_active Expired - Lifetime
- 1997-07-21 JP JP50669998A patent/JP4394166B2/ja not_active Expired - Fee Related
- 1997-07-21 EP EP97932909A patent/EP0913039A1/en not_active Withdrawn
- 1997-07-21 US US09/051,147 patent/US6525855B1/en not_active Expired - Lifetime
- 1997-07-21 NZ NZ332463A patent/NZ332463A/xx not_active IP Right Cessation
- 1997-07-21 GB GB9822820A patent/GB2327164B/en not_active Expired - Lifetime
- 1997-07-21 AU AU36277/97A patent/AU717824B2/en not_active Expired
- 1997-07-21 KR KR1019980710453A patent/KR100555996B1/ko not_active IP Right Cessation
- 1997-07-21 CA CA002253413A patent/CA2253413C/en not_active Expired - Lifetime
- 1997-07-21 WO PCT/GB1997/001958 patent/WO1998004057A1/en active IP Right Grant
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2002
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011010316A (ja) * | 2002-09-10 | 2011-01-13 | Harris Corp | 光/ワイヤレス・ハイブリッド通信を提供する通信システム及び方法 |
JP4880614B2 (ja) * | 2004-12-17 | 2012-02-22 | コーニング インコーポレイテッド | 遠隔のネットワークコンポーネントに光学的にパワー供給するためのシステム及び方法 |
JP2010503894A (ja) * | 2006-09-21 | 2010-02-04 | アルカテル−ルーセント ユーエスエー インコーポレーテッド | 電界吸収型変調器の干渉動作 |
Also Published As
Publication number | Publication date |
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CA2253413C (en) | 2004-01-20 |
US20030016418A1 (en) | 2003-01-23 |
AU3627797A (en) | 1998-02-10 |
JP4394166B2 (ja) | 2010-01-06 |
US6525855B1 (en) | 2003-02-25 |
GB2327164B (en) | 2000-09-06 |
WO1998004057A1 (en) | 1998-01-29 |
GB2327164A (en) | 1999-01-13 |
CN1225766A (zh) | 1999-08-11 |
EP0913039A1 (en) | 1999-05-06 |
AU717824B2 (en) | 2000-04-06 |
CA2253413A1 (en) | 1998-01-29 |
KR20000065242A (ko) | 2000-11-06 |
NZ332463A (en) | 2000-09-29 |
GB9822820D0 (en) | 1998-12-16 |
US6731880B2 (en) | 2004-05-04 |
US20040179852A1 (en) | 2004-09-16 |
KR100555996B1 (ko) | 2006-07-06 |
CN100393005C (zh) | 2008-06-04 |
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