WO2023281564A1 - 光給電装置及び光給電方法 - Google Patents
光給電装置及び光給電方法 Download PDFInfo
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- WO2023281564A1 WO2023281564A1 PCT/JP2021/025270 JP2021025270W WO2023281564A1 WO 2023281564 A1 WO2023281564 A1 WO 2023281564A1 JP 2021025270 W JP2021025270 W JP 2021025270W WO 2023281564 A1 WO2023281564 A1 WO 2023281564A1
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- photodiodes
- power supply
- optical power
- cores
- photodiode array
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- 230000003287 optical effect Effects 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims description 5
- 239000000835 fiber Substances 0.000 claims abstract description 38
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001143 conditioned effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
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Classifications
-
- 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
- H04B10/80—Optical aspects relating to the use of optical transmission for specific applications, not provided for in groups H04B10/03 - H04B10/70, e.g. optical power feeding or optical transmission through water
- H04B10/806—Arrangements for feeding power
- H04B10/807—Optical power feeding, i.e. transmitting power using an optical signal
-
- 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
- H04B10/80—Optical aspects relating to the use of optical transmission for specific applications, not provided for in groups H04B10/03 - H04B10/70, e.g. optical power feeding or optical transmission through water
Definitions
- the present invention relates to an optical power supply device and an optical power supply method.
- optical power supply that converts light passing through an optical fiber into electricity with a photodiode and supplies power.
- optical power feeding there is a method of using, for example, a double-clad fiber in order to maximize the optical power feeding capacity per fiber (see Non-Patent Document 1).
- Non-Patent Document 1 uses a plurality of transmitters, receivers, and optical feeding circuits, which makes the system complicated and expensive.
- the present invention provides an optical power supply device that can be realized at a lower cost.
- One aspect of the present invention includes a photodiode array having the same number of photodiodes as the number of cores that a multicore fiber has, the light receiving surface of each of the photodiodes facing a corresponding core of the multicore fiber, and the at least The two photodiodes are optical feeders connected in series with the feed target.
- the present invention provides an optical power supply device that can be realized at a lower cost.
- FIG. 1 is a diagram showing a configuration of an optical power supply system 1;
- FIG. It is an example of a multi-core fiber 12 according to the first embodiment.
- 4 is a flowchart showing the operation of the optical power supply system 1;
- FIG. 1 is a diagram showing the configuration of an optical power supply system 1.
- the optical power supply system 1 includes a power supply optical transmitter 11 , a multicore fiber 12 and an optical power supply device 13 .
- the feeding light transmitting unit 11 transmits feeding light to the optical feeding device 13 through the multi-core fiber 12 .
- the multicore fiber 12 is a fiber having multiple cores 120 .
- the optical power supply device 13 converts the power supply light transmitted from the power supply light transmitter 11 through the multi-core fiber 12 into electrical energy.
- the electrical energy converted by the optical power supply device 13 is supplied to a power supply target via, for example, a DC/DC converter.
- the power supply device is, for example, a charging/discharging circuit.
- the optical power supply device 13 has a photodiode array 14 , and the photodiode array 14 has a plurality of photodiodes 140 .
- the number of photodiodes 140 included in the photodiode array 14 is the same as the number of cores 120 included in the multicore fiber 12 .
- Each light receiving surface of the photodiode 140 is arranged to face the corresponding core 120 of the multicore fiber 12 .
- the number of cores 120 and the number of photodiodes 140 are N ⁇ M (N is an integer of 2 or more and M is an integer of 1 or more), and N photodiodes 140 are arranged in series. M series circuits are connected, and the M series circuits are connected in parallel to the power supply object.
- the multicore fiber 12 shown in FIG. 2 has four cores 120-1-4.
- the photodiode array 14 shown in FIGS. 3A and 3B has four photodiodes 140-1-4.
- the four photodiodes 140-1-4 correspond to the four cores 120-1-4 of the multi-core fiber 12, respectively. For example, light transmitted through core 120-1 is converted into electrical energy by photodiode 140-1.
- photodiode array 14 shown in FIG. 3A four photodiodes 140-1 to 4 are connected in series.
- two photodiodes 140-1 and 140-2 are connected in series and two photodiodes 140-3 and 140-4 are connected in series to form two series circuits.
- the two series circuits are connected in parallel with each other with respect to the power supply object.
- the multicore fiber 12 shown in FIG. 4 has six cores 120-1-6.
- the photodiode array 14 shown in FIG. 5 has six photodiodes 140-1 to 140-6.
- the six photodiodes 140-1-6 correspond to the six cores 120-1-6 of the multicore fiber 12, respectively.
- three photodiodes 140-1 to 3 are connected in series and three photodiodes 140-4 to 6 are connected in series to form two series circuits.
- the two series circuits are connected in parallel with each other with respect to the power supply object.
- the centers of the plurality of cores 120 and the plurality of photodiodes 140 may be arranged at the vertices of regular polygons.
- the centers of the four cores 120-1 to 4 and the photodiodes 140-1 to 4 are vertices of regular squares, respectively.
- the centers of the six cores 120-1 to 6 and the photodiodes 140-1 to 6 are arranged at the vertices of a regular hexagon.
- the photodiode array 14 since the photodiode array 14 includes a plurality of photodiodes 140 and the photodiodes 140 are connected in series, one transmitter and one receiver can be used for optical feeding. As a result, an optical power supply device can be realized at low cost. Further, the centers of the multiple cores 120 and the multiple photodiodes 140 are arranged at the vertices of the regular polygon. As a result, the core 120 and the photodiode 140 are arranged point-symmetrically, thereby facilitating alignment while reducing the distance between the photodiodes 140 and reducing the loss due to the resistance between the photodiodes.
- the core 120 and the photodiode 140 in the second embodiment constitute M series circuits connected in series with each N in the same manner as in the first embodiment. connected in parallel with each other. At this time, each of the N ⁇ M photodiodes 140 is arranged at the vertices of a regular polygon.
- the number of cores 120 and photodiodes 140 in the second embodiment is N ⁇ M (N is an integer of 3 or more, and M is an integer of 3 or more) and arranged as follows. First, the centers of 120N cores and 140N photodiodes are arranged to be different vertices of a regular N-polygon. Secondly, it is arranged so that the center of the regular N-gon becomes the vertex of the regular M-gon.
- FIG. 6 is an example of the multicore fiber 12 according to the second embodiment.
- the centers of the three cores 120-1 to 120-3 are arranged so as to form vertices of an equilateral triangle, and the cores 120-4 to 120-6 and cores 120-7 to 120-9 are arranged similarly.
- an equilateral triangle whose apex is the center of the cores 120-1 to 3 is an equilateral triangle T1
- an equilateral triangle whose apex is the center of the cores 120-4 to 6 is an equilateral triangle T2
- the centers of the cores 120-7 to 9 are an equilateral triangle T1.
- An equilateral triangle having a vertex is assumed to be an equilateral triangle T3. Further, the core 120 is arranged such that the center of the equilateral triangle T1, the center of the equilateral triangle T2, and the center of the equilateral triangle T3 are the vertices of the equilateral triangle.
- FIG. 7 is an example of the photodiode array 14 according to the second embodiment.
- the photodiodes 140 in the photodiode array 14 shown in FIG. 7 are arranged similarly to the core 120 shown in FIG.
- Photodiodes 140-1 to 140-3 are connected in series, and photodiodes 140-4 to 140-6 and photodiodes 140-7 to 9 are also connected in series. Also, three series circuits connected in series are connected in parallel.
- a lens or lens array is provided between the multi-core fiber 12 and the photodiode array 14 to determine the core diameter of the core 120, the aperture size of the photodiode 140, or the position irradiated by the light transmitted through the core 120. may be adjusted. Further, at this time, the position where the core 120 is arranged in the multi-core fiber 12 and the position where the photodiode 140 is arranged in the photodiode array 14 are in a similar relationship. It is conceivable that the light is conditioned by a lens or array of lenses.
- FIG. 8 is a flowchart showing the operation of the optical power supply system 1.
- the feeding light transmitter 11 transmits feeding light (step S1).
- the optical power supply device 13 converts the power supply light transmitted from the power supply light transmitter 11 through the multi-core fiber 12 into electrical energy (step S2).
- 1 optical feeding system 11 feeding optical transmitter, 12 multi-core fiber, 120 cores, 13 optical feeding device, 14 photodiode array, 140 photodiode
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Optical Couplings Of Light Guides (AREA)
Abstract
Description
本発明はより低コストに実現できる光給電装置を提供する。
第2の実施形態におけるコア120及びフォトダイオード140は、第1の実施形態と同様にN個ずつ直列に接続されたM個の直列回路を構成し、M個の直列回路が給電対象に対して互いに並列に接続される。このとき、各N×M個のフォトダイオード140は、正多角形の頂点になるように配置される。これに対し、第2の実施形態におけるコア120及びフォトダイオード140の数はN×M(Nは3以上の整数、Mは3以上の整数)であり、次のように配置される。第1にコア120N個及びフォトダイオード140N個の中心がそれぞれ正N角形の異なる頂点になるように配置される。第2に当該正N角形の中心が正M角形の頂点になるように配置される。
マルチコアファイバ12とフォトダイオードアレイ14との間にレンズ又はレンズアレイが設けられ、コア120のコア径、フォトダイオード140の開口の大きさ、又はコア120を介して送信される光が照射する位置を調整してもよい。また、このときマルチコアファイバ12においてコア120が配置される位置と、フォトダイオードアレイ14においてフォトダイオード140が配置される位置とが相似関係であり、マルチコアファイバ12とフォトダイオードアレイ14との間に設けられたレンズ又はレンズアレイにより光が調整されることが考えられる。
図8は、光給電システム1の動作を示すフローチャートである。給電光送信部11は給電光を送信する(ステップS1)。光給電装置13は、給電光送信部11からマルチコアファイバ12を通り送信される給電光を電気エネルギーに変換する(ステップS2)。
Claims (5)
- マルチコアファイバが有するコアの数と同じ数のフォトダイオードを有するフォトダイオードアレイを備え、
前記フォトダイオードのそれぞれの受光面は、前記マルチコアファイバの対応するコアに向き、
前記少なくとも2つのフォトダイオードは、給電対象に対して直列に接続される、
光給電装置。 - 前記コアの数及び前記フォトダイオードの数は、N×M(Nは2以上の整数、Mは1以上の整数)であり、
前記フォトダイオードは、N個ずつ直列に接続されたM個の直列回路を構成し、前記M個の直列回路が給電対象に対して互いに並列に接続される、
請求項1に記載の光給電装置。 - 前記コア及び前記フォトダイオードの中心が、それぞれ正多角形の異なる頂点になるように配置される、
請求項1又は2に記載の光給電装置。 - 前記コアN(Nは3以上の整数)個及び前記フォトダイオードN個の中心がそれぞれ正N角形の異なる頂点になるように配置され、M(Mは3以上の整数)個の前記正N角形の中心が正M角形の頂点になるように配置される、
請求項2に記載の光給電装置。 - マルチコアファイバとフォトダイオードアレイとを使用し、前記マルチコアファイバを通る光を前記フォトダイオードアレイにより電気エネルギーに変換する光給電方法であって、
前記マルチコアファイバが有する複数のコアの数と前記フォトダイオードアレイが有する複数のフォトダイオードの数は同じであり、前記少なくとも2つのフォトダイオードは直列に接続される、
光給電方法。
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PCT/JP2021/025270 WO2023281564A1 (ja) | 2021-07-05 | 2021-07-05 | 光給電装置及び光給電方法 |
JP2023532866A JPWO2023281564A1 (ja) | 2021-07-05 | 2021-07-05 | |
US18/569,573 US20240275496A1 (en) | 2021-07-05 | 2021-07-05 | Light feeding apparatus and light feeding method |
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PCT/JP2021/025270 WO2023281564A1 (ja) | 2021-07-05 | 2021-07-05 | 光給電装置及び光給電方法 |
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Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005252909A (ja) * | 2004-03-08 | 2005-09-15 | Yokogawa Electric Corp | 高耐圧半導体リレー |
JP2014017451A (ja) * | 2012-07-11 | 2014-01-30 | Fuji Xerox Co Ltd | 光伝送システム及び面発光型半導体レーザ |
JP2014503854A (ja) * | 2010-12-20 | 2014-02-13 | アルカテル−ルーセント | フォトニック回路カプラへのマルチコア光ケーブル |
US10234632B1 (en) * | 2015-08-18 | 2019-03-19 | National Technology & Engineering Solutions Of Sandia, Llc | Connectors for multicore optical fibers and methods thereof |
JP2019521761A (ja) * | 2016-06-23 | 2019-08-08 | コーニンクレッカ フィリップス エヌ ヴェKoninklijke Philips N.V. | 光送信機、光受信機及び光リンク |
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- 2021-07-05 WO PCT/JP2021/025270 patent/WO2023281564A1/ja active Application Filing
- 2021-07-05 US US18/569,573 patent/US20240275496A1/en active Pending
- 2021-07-05 JP JP2023532866A patent/JPWO2023281564A1/ja active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005252909A (ja) * | 2004-03-08 | 2005-09-15 | Yokogawa Electric Corp | 高耐圧半導体リレー |
JP2014503854A (ja) * | 2010-12-20 | 2014-02-13 | アルカテル−ルーセント | フォトニック回路カプラへのマルチコア光ケーブル |
JP2014017451A (ja) * | 2012-07-11 | 2014-01-30 | Fuji Xerox Co Ltd | 光伝送システム及び面発光型半導体レーザ |
US10234632B1 (en) * | 2015-08-18 | 2019-03-19 | National Technology & Engineering Solutions Of Sandia, Llc | Connectors for multicore optical fibers and methods thereof |
JP2019521761A (ja) * | 2016-06-23 | 2019-08-08 | コーニンクレッカ フィリップス エヌ ヴェKoninklijke Philips N.V. | 光送信機、光受信機及び光リンク |
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