JP2019159075A - 光デバイス、およびこれを用いた光通信モジュール - Google Patents
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- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
- G02B6/12—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
- G02B6/12004—Combinations of two or more optical elements
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- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
- G02B6/12—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
- G02B6/122—Basic optical elements, e.g. light-guiding paths
- G02B6/125—Bends, branchings or intersections
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- G—PHYSICS
- G02—OPTICS
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- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
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- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
- G02B6/4213—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms the intermediate optical elements being polarisation selective optical elements
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- 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
- G02F1/29—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 position or the direction of light beams, i.e. deflection
- G02F1/31—Digital deflection, i.e. optical switching
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- 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
- H04B10/801—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 using optical interconnects, e.g. light coupled isolators, circuit board interconnections
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- G02B6/26—Optical coupling means
- G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
- G02B6/2804—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers
- G02B6/2861—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers using fibre optic delay lines and optical elements associated with them, e.g. for use in signal processing, e.g. filtering
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- G—PHYSICS
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Abstract
Description
変調部と受光部を有し複数のチャネルで光信号を送受信する光集積回路と、
前記光集積回路との間で電気信号を伝送する配線基板と、
を有し、
前記変調部の出力から前記光集積回路の出力ポートまでの第1光導波路と、前記光集積回路の入力ポートから前記受光部の入力までの第2光導波路において、前記複数のチャネルの各々で光導波路が最短で配置され、
前記配線基板は前記複数のチャネルに対応する複数の電気配線を有し、
前記複数の電気配線の長さは、前記複数のチャネル間の前記光導波路の長さの差を補償する長さに設定されている。
図2は、第1実施形態の光デバイス1Aの概略構成図である。図2の例では、光デバイス1Aは互いに直交する2つの偏波成分と、互いに直交する2つの位相成分を用いて4つの論理値を表わすDP−QPSK(Dual Polarization-Quadrature Phase Shift Keying:偏波多重直交位相偏移)方式の光デバイスである。
図5は、第2実施形態の光デバイス1Bの概略構成図である。第1実施形態と同じ構成要素には同じ符号を付けて、重複する説明を省略する。
図6は、第3実施形態の光デバイス1Cの概略構成図である。第1実施形態及び第2実施形態と同じ構成要素には同じ符号を付けて、重複する説明を省略する。
図7は、変形例の光デバイス1Dの概略構成図である。光デバイス1Dは、パッケージ11のRFインタフェースに、フレキシブルプリント回路(FPC)40を用いている。中継基板3Dの信号配線7a〜7dは、FPC40の信号配線41a〜41dに接続されている。中継基板4Dの差動の信号配線8a〜8dは、FPC40の差動の信号配線42a〜42dに接続されている。
図8は、光デバイス1を用いた光通信モジュール100の概略図である。光通信モジュール100は、光デバイス1、光源ユニット(LD)106、及び信号処理回路(DSP)105を有し、これらの部品はパッケージ101内に収容されている。
2 光IC(光集積回路)
3、3A〜3C、4、4A〜4C 中継基板
5 変調部
6 ドライバ回路
7、7a〜7d 信号配線
8、8a〜8d 差動配線
12、12a、12b、12c 分岐カプラ
21 受光部
22 TIA回路
40 フレキシブルプリント回路
41a〜41d、42a〜42d 信号配線
100 光通信モジュール
105 DSP(信号処理回路)
106 LD(光源)
111、111T、111R 光導波路
112、112a、112b 合波カプラ
113、122 偏波ローテータ
114 偏波ビームコンバイナ
121 偏波ビームスプリッタ
123a、123b 90°ハイブリッド光ミキサ
132a〜132d 出力導波路
Claims (9)
- 変調部と受光部を有し複数のチャネルで光信号を送受信する光集積回路と、
前記光集積回路との間で電気信号を伝送する配線基板と、
を有し、
前記変調部の出力から前記光集積回路の出力ポートまでの第1光導波路と、前記光集積回路の入力ポートから前記受光部の入力までの第2光導波路において、前記複数のチャネルの各々で光導波路が最短で配置され、
前記配線基板は前記複数のチャネルに対応する複数の電気配線を有し、
前記複数の電気配線の長さは、前記複数のチャネル間の前記光導波路の長さの差を補償する長さに設定されていることを特徴とする光デバイス。 - 前記第1光導波路または前記第2光導波路に配置される合分波器の合分波比率は、前記複数のチャネル間の前記光導波路の長さの差による光損失の差を補うように等分からシフトして設定されていることを特徴とする請求項1に記載の光デバイス。
- 前記合分波器は、前記第1光導波路に挿入される合波カプラであり、前記合波カプラの合波比率は、より長い前記光導波路を通る光の合波比率が大きくなるように1:1からずれていることを特徴とする請求項2に記載の光デバイス。
- 前記合分波器は、前記第1光導波路に挿入される偏波合成カプラであり、前記偏波合成カプラの結合比率は、より長い前記光導波路を通る光の偏波依存損失を低減するように1:1からずれていることを特徴とする請求項2に記載の光デバイス。
- 前記合分波器は、前記第2光導波路に挿入される偏波分離カプラであり、前記偏波分離カプラの結合比率は、より長い前記光導波路を通る光の偏波依存損失を低減するように1:1からずれていることを特徴とする請求項2に記載の光デバイス。
- 前記合分波器は、前記第2光導波路に配置される90°ハイブリッド光ミキサであり、前記90°ハイブリッド光ミキサの入力導波路に依存する分岐比が、より長い前記光導波路を通る光の損失を低減するように1:1からずれていることを特徴とする請求項2に記載の光デバイス。
- 前記配線基板は、前記光集積回路に入力され、または前記光集積回路から出力される前記電気信号を外部へ中継する中継基板であり、
前記複数の電気配線の配列中心は、前記中継基板の信号配列方向の中心からオフセットしていることを特徴とする請求項1に記載の光デバイス。 - 前記配線基板は、前記複数のチャネルに対応する前記電気配線が形成されたフレキシブルプリント回路基板を含み、前記中継基板と前記フレキシブルプリント回路基板の少なくとも一方で、前記複数のチャネル間での前記光導波路の長さの相違を補償するように、前記電気配線の長さが調整されていることを特徴とする請求項7に記載の光デバイス。
- 請求項1〜8のいずれか1項に記載の光デバイスと、
前記光デバイスに光を入射する光源と、
前記光デバイスに入力される、または前記光デバイスから出力される信号を処理する信号処理回路と、
を有する光通信モジュール。
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JP2018045016A JP7302946B2 (ja) | 2018-03-13 | 2018-03-13 | 光デバイス、およびこれを用いた光通信モジュール |
US16/282,655 US10459175B2 (en) | 2018-03-13 | 2019-02-22 | Optical device, and optical communication module using the same |
CN201910167050.1A CN110275254B (zh) | 2018-03-13 | 2019-03-06 | 光器件以及使用该光器件的光通信模块 |
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US11988874B2 (en) | 2020-10-07 | 2024-05-21 | Nubis Communications, Inc. | Data processing systems including optical communication modules |
CN117957471A (zh) * | 2021-06-17 | 2024-04-30 | 努比斯通信公司 | 具有可插拔模块的通信系统 |
US20240022329A1 (en) * | 2022-07-18 | 2024-01-18 | Marvell Asia Pte Ltd | Optical transceiver with multimode interferometers |
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