Wide-Bandwidth and High-Sensitivity Measurement Technique of Intrinsic Modulation Response of Semiconductor Lasers
We propose and demonstrate a measurement technique of the intrinsic modulation responses of semiconductor lasers with high sensitivity in a wide modulation frequency range. The technique is based on the two-tone optical modulation and lock-in detection of an optical spectrum having modulation sideba...
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| Format: | Article |
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IEEE
2023-01-01
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| Series: | IEEE Photonics Journal |
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| Online Access: | https://ieeexplore.ieee.org/document/10185004/ |
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| author | Nobuhide Yokota Tomoharu Nohara Hiroshi Yasaka |
| author_facet | Nobuhide Yokota Tomoharu Nohara Hiroshi Yasaka |
| author_sort | Nobuhide Yokota |
| collection | DOAJ |
| description | We propose and demonstrate a measurement technique of the intrinsic modulation responses of semiconductor lasers with high sensitivity in a wide modulation frequency range. The technique is based on the two-tone optical modulation and lock-in detection of an optical spectrum having modulation sidebands. The measured modulation response of a conventional 1.55-μm distributed feedback laser indicates that the lock-in detection improves the signal-to-noise ratio by 22 dB. This significant improvement allows measurement of the modulation response up to 75 GHz even though the 3-dB bandwidth of the distributed feedback laser is only 11 GHz. Our technique is suitable for evaluation of the intrinsic modulation response of wide-bandwidth semiconductor lasers free from device parasitic effects. |
| format | Article |
| id | doaj-art-8c0b1cc2d7d44d70b2caf089ab1c7c1d |
| institution | DOAJ |
| issn | 1943-0655 |
| language | English |
| publishDate | 2023-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj-art-8c0b1cc2d7d44d70b2caf089ab1c7c1d2025-08-20T03:15:14ZengIEEEIEEE Photonics Journal1943-06552023-01-011541610.1109/JPHOT.2023.329620310185004Wide-Bandwidth and High-Sensitivity Measurement Technique of Intrinsic Modulation Response of Semiconductor LasersNobuhide Yokota0https://orcid.org/0000-0003-3833-6565Tomoharu Nohara1Hiroshi Yasaka2https://orcid.org/0000-0003-2204-3573Research Institute of Electrical Communication, Tohoku University, Sendai, JapanResearch Institute of Electrical Communication and Graduate School of Engineering, Tohoku University, Sendai, JapanResearch Institute of Electrical Communication, Tohoku University, Sendai, JapanWe propose and demonstrate a measurement technique of the intrinsic modulation responses of semiconductor lasers with high sensitivity in a wide modulation frequency range. The technique is based on the two-tone optical modulation and lock-in detection of an optical spectrum having modulation sidebands. The measured modulation response of a conventional 1.55-μm distributed feedback laser indicates that the lock-in detection improves the signal-to-noise ratio by 22 dB. This significant improvement allows measurement of the modulation response up to 75 GHz even though the 3-dB bandwidth of the distributed feedback laser is only 11 GHz. Our technique is suitable for evaluation of the intrinsic modulation response of wide-bandwidth semiconductor lasers free from device parasitic effects.https://ieeexplore.ieee.org/document/10185004/Semiconductor lasermodulation responsecoherent optical spectrum analyzerlock-in detection |
| spellingShingle | Nobuhide Yokota Tomoharu Nohara Hiroshi Yasaka Wide-Bandwidth and High-Sensitivity Measurement Technique of Intrinsic Modulation Response of Semiconductor Lasers IEEE Photonics Journal Semiconductor laser modulation response coherent optical spectrum analyzer lock-in detection |
| title | Wide-Bandwidth and High-Sensitivity Measurement Technique of Intrinsic Modulation Response of Semiconductor Lasers |
| title_full | Wide-Bandwidth and High-Sensitivity Measurement Technique of Intrinsic Modulation Response of Semiconductor Lasers |
| title_fullStr | Wide-Bandwidth and High-Sensitivity Measurement Technique of Intrinsic Modulation Response of Semiconductor Lasers |
| title_full_unstemmed | Wide-Bandwidth and High-Sensitivity Measurement Technique of Intrinsic Modulation Response of Semiconductor Lasers |
| title_short | Wide-Bandwidth and High-Sensitivity Measurement Technique of Intrinsic Modulation Response of Semiconductor Lasers |
| title_sort | wide bandwidth and high sensitivity measurement technique of intrinsic modulation response of semiconductor lasers |
| topic | Semiconductor laser modulation response coherent optical spectrum analyzer lock-in detection |
| url | https://ieeexplore.ieee.org/document/10185004/ |
| work_keys_str_mv | AT nobuhideyokota widebandwidthandhighsensitivitymeasurementtechniqueofintrinsicmodulationresponseofsemiconductorlasers AT tomoharunohara widebandwidthandhighsensitivitymeasurementtechniqueofintrinsicmodulationresponseofsemiconductorlasers AT hiroshiyasaka widebandwidthandhighsensitivitymeasurementtechniqueofintrinsicmodulationresponseofsemiconductorlasers |