JP7110386B2 - 光信号における位相変化検出 - Google Patents
光信号における位相変化検出 Download PDFInfo
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- JP7110386B2 JP7110386B2 JP2020554218A JP2020554218A JP7110386B2 JP 7110386 B2 JP7110386 B2 JP 7110386B2 JP 2020554218 A JP2020554218 A JP 2020554218A JP 2020554218 A JP2020554218 A JP 2020554218A JP 7110386 B2 JP7110386 B2 JP 7110386B2
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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
- H04B10/60—Receivers
- H04B10/66—Non-coherent receivers, e.g. using direct detection
- H04B10/67—Optical arrangements in the receiver
- H04B10/676—Optical arrangements in the receiver for all-optical demodulation of the input optical signal
- H04B10/677—Optical arrangements in the receiver for all-optical demodulation of the input optical signal for differentially modulated signal, e.g. DPSK signals
-
- 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
- H04B10/60—Receivers
- H04B10/61—Coherent receivers
- H04B10/612—Coherent receivers for optical signals modulated with a format different from binary or higher-order PSK [X-PSK], e.g. QAM, DPSK, FSK, MSK, ASK
-
- 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
- H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
-
- 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
- H04B10/548—Phase or frequency modulation
- H04B10/556—Digital modulation, e.g. differential phase shift keying [DPSK] or frequency shift keying [FSK]
- H04B10/5561—Digital phase modulation
-
- 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
- H04B10/60—Receivers
- H04B10/61—Coherent receivers
- H04B10/615—Arrangements affecting the optical part of the receiver
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Optical Communication System (AREA)
- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
Description
一態様によれば、光信号受信器が提供され、当該光信号受信器は、到着光信号を受信し、該到着光信号を受信したことに応答して第1の出力光信号エネルギーを放出するように構成された第1の光共振器と、前記到着光信号を受信し、前記到着光信号を受信したことに応答して第2の出力光信号エネルギーを放出するように構成された第2の光共振器と、第1の出力光信号エネルギー及び第2の出力光信号エネルギーのうちの少なくとも一方の過渡応答に基づいて、到着光信号における位相遷移を割り出すように構成された検出器と、を含む。
Claims (9)
- ある波長を持つ到着光信号を受信し、該到着光信号を受信したことに応答して第1の出力光信号エネルギーを放出するように構成された第1の光共振器であり、前記到着光信号の前記波長に対して正側に離調されるように構成された第1の光共振器と、
前記到着光信号を受信し、前記到着光信号を受信したことに応答して第2の出力光信号エネルギーを放出するように構成された第2の光共振器であり、前記到着光信号の前記波長に対して負側に離調されるように構成された第2の光共振器と、
前記第1の出力光信号エネルギー及び前記第2の出力光信号エネルギーのうちの少なくとも一方における過渡応答に基づいて、前記到着光信号における位相遷移を割り出すように構成された検出器と、
を有し、
前記検出器は更に、前記位相遷移の大きさ及び方向を区別するように構成されている、
光信号受信器。 - 前記検出器は更に、前記位相遷移の前記大きさ及び前記方向を一組の候補位相遷移の中から一意に特定するように構成され、前記一組の候補位相遷移は、前記到着光信号の共通の最終状態をもたらす一組の位相遷移である、請求項1に記載の光信号受信器。
- 前記検出器は更に、360°以上の位相遷移を、当該位相遷移が引き起こす過渡的な乱れによって区別するように構成される、請求項1に記載の光信号受信器。
- 前記第1及び第2の光共振器の各々が、2つの半反射面を持つエタロンであり、前記半反射面は、前記半反射面の各々に衝突する光信号エネルギーの一部を反射することによって、前記光信号エネルギーを少なくとも部分的にトラップするように構成される、請求項1に記載の光信号受信器。
- 到着光信号を受信し、該到着光信号を受信したことに応答して第1の出力光信号エネルギーを放出するように構成された第1の光共振器と、
前記到着光信号を受信し、前記到着光信号を受信したことに応答して第2の出力光信号エネルギーを放出するように構成された第2の光共振器と、
前記到着光信号を受信し、前記到着光信号を受信したことに応答して第3の出力光信号エネルギーを放出するように構成された第3の光共振器と、
前記第1の出力光信号エネルギー、前記第2の出力光信号エネルギー、及び前記第3の出力光信号エネルギーのうちの少なくとも2つの間の比較に少なくとも部分的に基づいて、位相遷移を割り出すように構成された検出器と、
を有する光信号受信器。 - 到着光信号にエンコードされた情報を検出する方法であって、
複数の光共振器の各々において、ある波長を持つ前記到着光信号の一部を受信し、
前記複数の光共振器の各々からのそれぞれの出力光信号を分析し、且つ
前記出力光信号のうちの1つ以上の出力光信号の強度レベルにおける1つ以上の違いに基づいて、前記到着光信号における位相遷移を割り出す、
ことを有し、
前記複数の光共振器のうちの第1の光共振器が、前記到着光信号の前記波長に対して正側に離調され、且つ前記複数の光共振器のうちの第2の光共振器が、前記到着光信号の前記波長に対して負側に離調され、
前記位相遷移を割り出すことは、前記位相遷移の大きさ及び方向を区別することを含む、
方法。 - 前記位相遷移を割り出すことは更に、前記位相遷移の大きさ及び方向を一組の候補位相遷移の中から一意に特定することを含み、前記一組の候補位相遷移は、前記到着光信号の共通の最終状態をもたらす一組の位相遷移である、請求項6に記載の方法。
- 前記位相遷移を割り出すことは、360°以上の位相遷移を、当該位相遷移が引き起こす過渡的な乱れによって区別することを含む、請求項6に記載の方法。
- 前記複数の光共振器の各々が、2つの半反射面を持つエタロンであり、
当該方法は更に、
前記半反射面の各々に衝突する光信号エネルギーの一部を反射することにより、前記複数の光共振器の各々の内部で光信号エネルギーを共振させることによって、前記複数の光共振器の各々からの前記それぞれの出力光信号を生成する、
ことを有する、請求項6に記載の方法。
Applications Claiming Priority (3)
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US201862656821P | 2018-04-12 | 2018-04-12 | |
US62/656,821 | 2018-04-12 | ||
PCT/US2019/026293 WO2019199650A1 (en) | 2018-04-12 | 2019-04-08 | Phase change detection in optical signals |
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JP7110386B2 true JP7110386B2 (ja) | 2022-08-01 |
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US (1) | US11012160B2 (ja) |
EP (1) | EP3776918B1 (ja) |
JP (1) | JP7110386B2 (ja) |
AU (1) | AU2019253437B2 (ja) |
CA (1) | CA3096829A1 (ja) |
WO (1) | WO2019199650A1 (ja) |
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