Improving the Performance of Optical Phased Array by Reducing Relative Intensity Noise of Optically Injection-Locked Laser Array
Relative intensity noise (RIN) is an important factor that determines the performance of optical phased arrays (OPA) that are configured using semiconductor lasers as light emission sources. This study proposes a method of improving the optical signal-to-noise ratio (OSNR) of an OPA by reducing the...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-11-01
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| Series: | Photonics |
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| Online Access: | https://www.mdpi.com/2304-6732/9/11/868 |
| _version_ | 1797464233167814656 |
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| author | Anh-Hang Nguyen Hyuk-Kee Sung |
| author_facet | Anh-Hang Nguyen Hyuk-Kee Sung |
| author_sort | Anh-Hang Nguyen |
| collection | DOAJ |
| description | Relative intensity noise (RIN) is an important factor that determines the performance of optical phased arrays (OPA) that are configured using semiconductor lasers as light emission sources. This study proposes a method of improving the optical signal-to-noise ratio (OSNR) of an OPA by reducing the RIN and using high coherence of optically injection-locked (OIL) laser arrays. We numerically demonstrated a laser RIN reduction of 22.7 dB by the OIL laser compared to a free-running laser. We achieved an OPA RIN reduction of 13.2 dB by combining the coherent outputs with the uncorrelated noise of 21 OIL lasers, compared to a single OIL laser RIN. Consequently, we demonstrated an OPA OSNR increase of approximately 13.8 dB based on the OIL-based OPA compared to that of the conventional noise-correlated OPA configuration. Additionally, we confirmed the maintenance of OPA OSNR improvement during OPA operations. |
| first_indexed | 2024-03-09T18:04:08Z |
| format | Article |
| id | doaj.art-9413fd2f0dc24723b77b60d1021e098b |
| institution | Directory Open Access Journal |
| issn | 2304-6732 |
| language | English |
| last_indexed | 2024-03-09T18:04:08Z |
| publishDate | 2022-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Photonics |
| spelling | doaj.art-9413fd2f0dc24723b77b60d1021e098b2023-11-24T09:37:52ZengMDPI AGPhotonics2304-67322022-11-0191186810.3390/photonics9110868Improving the Performance of Optical Phased Array by Reducing Relative Intensity Noise of Optically Injection-Locked Laser ArrayAnh-Hang Nguyen0Hyuk-Kee Sung1Department of Electronic and Electrical Engineering, Hongik University, Seoul 04066, Republic of KoreaSchool of Electronic and Electrical Engineering, Hongik University, Seoul 04066, Republic of KoreaRelative intensity noise (RIN) is an important factor that determines the performance of optical phased arrays (OPA) that are configured using semiconductor lasers as light emission sources. This study proposes a method of improving the optical signal-to-noise ratio (OSNR) of an OPA by reducing the RIN and using high coherence of optically injection-locked (OIL) laser arrays. We numerically demonstrated a laser RIN reduction of 22.7 dB by the OIL laser compared to a free-running laser. We achieved an OPA RIN reduction of 13.2 dB by combining the coherent outputs with the uncorrelated noise of 21 OIL lasers, compared to a single OIL laser RIN. Consequently, we demonstrated an OPA OSNR increase of approximately 13.8 dB based on the OIL-based OPA compared to that of the conventional noise-correlated OPA configuration. Additionally, we confirmed the maintenance of OPA OSNR improvement during OPA operations.https://www.mdpi.com/2304-6732/9/11/868optical injection lockinglaser relative intensity noiseoptical phased arrayoptical signal-to-noise ratio |
| spellingShingle | Anh-Hang Nguyen Hyuk-Kee Sung Improving the Performance of Optical Phased Array by Reducing Relative Intensity Noise of Optically Injection-Locked Laser Array Photonics optical injection locking laser relative intensity noise optical phased array optical signal-to-noise ratio |
| title | Improving the Performance of Optical Phased Array by Reducing Relative Intensity Noise of Optically Injection-Locked Laser Array |
| title_full | Improving the Performance of Optical Phased Array by Reducing Relative Intensity Noise of Optically Injection-Locked Laser Array |
| title_fullStr | Improving the Performance of Optical Phased Array by Reducing Relative Intensity Noise of Optically Injection-Locked Laser Array |
| title_full_unstemmed | Improving the Performance of Optical Phased Array by Reducing Relative Intensity Noise of Optically Injection-Locked Laser Array |
| title_short | Improving the Performance of Optical Phased Array by Reducing Relative Intensity Noise of Optically Injection-Locked Laser Array |
| title_sort | improving the performance of optical phased array by reducing relative intensity noise of optically injection locked laser array |
| topic | optical injection locking laser relative intensity noise optical phased array optical signal-to-noise ratio |
| url | https://www.mdpi.com/2304-6732/9/11/868 |
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