JP6910231B2 - 光導波路干渉計 - Google Patents
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- G02B6/293—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
- G02B6/29379—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means characterised by the function or use of the complete device
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Description
Claims (16)
- 第一の光合波部と、
第二の光合波部と、
前記第一の光合波部及び前記第二の光合波部を接続する1組の光導波路であって、前記第一の光合波部及び前記第二の光合波部間を伝播する光が、前記1組内の各前記光導波路を通過し、前記1組の光導波路は、第一の長さ及び第一の幅を有する第一の光導波路と、第二の長さ及び第二の幅を有する第二の光導波路とを含み、前記第二の長さは前記第一の長さよりも大きく、前記第二の幅は前記第一の幅よりも大きい、1組の光導波路と
を備え、
前記1組の光導波路の少なくとも一方の光導波路は、湾曲部分を含み、それぞれの光導波路の幅は一定であり、前記第一の幅に対する前記第一の光導波路の第一の有効屈折率の変動値と、前記第一の長さとの積は、前記第二の幅に対する前記第二の光導波路の第二の有効屈折率の変動値と、前記第二の長さとの積に実質的に等しく、前記第一の光導波路及び前記第二の光導波路間で生じる相対位相差が補償される
光導波路干渉計。 - 前記第一の光合波部は、分岐部であり、
前記分岐部は、前記光を該分岐部内に受信するための少なくとも1つの分岐入力ポートと、前記光を該分岐部から出力するための少なくとも2つの分岐出力ポートとを含み、
前記2つの分岐出力ポートは、前記第一の光導波路に接続された第一の分岐出力ポートと、前記第二の光導波路に接続された第二の分岐出力ポートとを有し、
前記第二の光合波部は、光結合部であり、
前記光結合部は、前記光を該光結合部に受信するための少なくとも2つの結合入力ポートと、前記光を該光結合部から出力するための少なくとも1つの結合出力ポートとを含み、
前記2つの結合入力ポートは、前記第一の光導波路に接続された第一の結合入力ポートと、前記第二の光導波路に接続された第二の結合入力ポートとを有する、
請求項1に記載の光導波路干渉計。 - 前記第一の長さはL1であり、前記第二の長さはL2であり、前記第一の幅に対する前記第一の有効屈折率の変動値はΔn1であり、前記第二の幅に対する前記第二の有効屈折率の変動値はΔn2であり、前記第一の幅及び前記第二の幅は、前記L1及び前記Δn1の積と、前記L2及び前記Δn2の積との差が10%未満になるように決定される、請求項1に記載の光導波路干渉計。
- 前記第一の幅及び前記第二の幅は、L1・Δn1=α・L2・Δn2となるように決定され、0.9≦α≦1.1である、請求項1に記載の光導波路干渉計。
- 前記光導波路干渉計は、非対称マッハ−ツェンダー干渉計である、請求項1に記載の光導波路干渉計。
- 前記光導波路干渉計は、アレイ導波路回折格子である、請求項1に記載の光導波路干渉計。
- 前記光導波路干渉計は、2つのマルチモード干渉デバイスと、3つ以上の相互に連結した光導波路とからなる、請求項1に記載の光導波路干渉計。
- 前記1組の光導波路は3つ以上の光導波路を含み、前記1組内の全ての光導波路は、別の光導波路よりも長い光導波路の各々は、該別の光導波路よりも広くなるように選択された、異なる長さ及び異なる幅を有する、請求項1に記載の光導波路干渉計。
- 各前記光導波路は、略同一の最大幅のテーパー入力部分及びテーパー出力部分を有する、請求項1に記載の光導波路干渉計。
- 前記第一の光合波部及び前記第二の光合波部の入力部分及び出力部分は、前記光導波路の前記テーパー入力部分及び前記テーパー出力部分が、前記1組の光導波路の前記テーパー入力部分及び前記テーパー出力部分に接続されるように構成される、請求項9に記載の光導波路干渉計。
- 前記第一の光合波部及び前記第二の光合波部のうちの少なくとも1つは、少なくとも1つの導波されていない光導波路を有する、請求項1に記載の光導波路干渉計。
- 前記第一の光合波部及び前記第二の光合波部のうちの少なくとも1つは、各出力部分において、少なくとも1つの非導波部を有する、請求項1に記載の光導波路干渉計。
- 前記光導波路の各々は、別のセグメントよりも狭い少なくとも1つのセグメントを含む、請求項1に記載の光導波路干渉計。
- 前記セグメントは、長さが少なくとも1μmよりも長い狭部を含む、請求項13に記載の光導波路干渉計。
- 前記第一の光合波部、前記第二の光合波部及び前記1組の光導波路の底部に取り付けられた基板を更に備え、該基板は、リン化インジウム基板、シリコン基板及びガラス基板のうちの1つ又は組み合わせを含む、請求項1に記載の光導波路干渉計。
- 前記第二の長さは、
予め設定された波長について前記1組の光導波路のコア厚みを決定するステップと、
予め設定されたシステム設計に従って前記第一の長さ及び前記第一の幅を決定するステップと、
予め設定された波長分離と前記第一の光導波路の有効屈折率とに基づいて追加の長さを決定するステップと、
前記第一の長さ及び前記追加の長さを加えることによって、前記第二の長さを決定するステップと
によって決定される、請求項1に記載の光導波路干渉計。
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US15/228,123 US10996400B2 (en) | 2016-08-04 | 2016-08-04 | Optical waveguide interferometer |
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CN109952520A (zh) * | 2016-10-27 | 2019-06-28 | 三菱电机株式会社 | 光合波器 |
CN113740970A (zh) * | 2020-05-30 | 2021-12-03 | 华为技术有限公司 | 一种光栅及其特性调整方法、设备 |
CN112068244B (zh) * | 2020-09-18 | 2022-07-05 | 联合微电子中心有限责任公司 | 无热阵列波导光栅 |
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JPH0718964B2 (ja) * | 1987-06-29 | 1995-03-06 | 日本電信電話株式会社 | 集積光デバイスおよびその製造方法 |
JPH06308338A (ja) | 1993-04-23 | 1994-11-04 | Furukawa Electric Co Ltd:The | 導波路型光部品 |
US6757454B2 (en) | 2000-02-10 | 2004-06-29 | Nippon Telegraph And Telephone Corporation | Polarization desensitized optical waveguide interferometer |
JP2002107681A (ja) | 2000-09-29 | 2002-04-10 | Fujitsu Quantum Devices Ltd | 光半導体装置 |
US6853769B2 (en) | 2001-03-16 | 2005-02-08 | Lightwave Microsystems Corporation | Arrayed waveguide grating with waveguides of unequal widths |
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