High-Sensitivity Fiber Fault Detection Method Using Feedback-Delay Signature of a Modulated Semiconductor Laser
We propose a high-sensitivity fiber fault detection method using the feedback-delay signature of a modulated semiconductor laser. The modulated laser is directed to a fiber fault and then receives the fault echo, which, in principle, forms an external cavity feedback laser. The fault location, i.e.,...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-06-01
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| Series: | Photonics |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2304-6732/9/7/454 |
| _version_ | 1797416470391554048 |
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| author | Zixiong Shi Tong Zhao Yuncai Wang Anbang Wang |
| author_facet | Zixiong Shi Tong Zhao Yuncai Wang Anbang Wang |
| author_sort | Zixiong Shi |
| collection | DOAJ |
| description | We propose a high-sensitivity fiber fault detection method using the feedback-delay signature of a modulated semiconductor laser. The modulated laser is directed to a fiber fault and then receives the fault echo, which, in principle, forms an external cavity feedback laser. The fault location, i.e., the external cavity length, is measured by the feedback-delay signature appearing on the laser modulation response curve. The resonance effect between the modulation frequency and external cavity frequency significantly enhanced the laser sensitivity to feedback light and then led to highly sensitive fault detection. Numerical simulations based on laser rate equations predicted that −118.1 dB sensitivity to fault echo light can be obtained. |
| first_indexed | 2024-03-09T06:03:42Z |
| format | Article |
| id | doaj.art-ca2551dcc5a04ccdbfeff7d7be63e99a |
| institution | Directory Open Access Journal |
| issn | 2304-6732 |
| language | English |
| last_indexed | 2024-03-09T06:03:42Z |
| publishDate | 2022-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Photonics |
| spelling | doaj.art-ca2551dcc5a04ccdbfeff7d7be63e99a2023-12-03T12:06:41ZengMDPI AGPhotonics2304-67322022-06-019745410.3390/photonics9070454High-Sensitivity Fiber Fault Detection Method Using Feedback-Delay Signature of a Modulated Semiconductor LaserZixiong Shi0Tong Zhao1Yuncai Wang2Anbang Wang3Key Laboratory of Advanced Transducers and Intelligent Control System, Taiyuan University of Technology, Ministry of Education and Shanxi Province, Taiyuan 030024, ChinaKey Laboratory of Advanced Transducers and Intelligent Control System, Taiyuan University of Technology, Ministry of Education and Shanxi Province, Taiyuan 030024, ChinaGuangdong Provincial Key Laboratory of Photonics Information Technology, Guangzhou 510006, ChinaKey Laboratory of Advanced Transducers and Intelligent Control System, Taiyuan University of Technology, Ministry of Education and Shanxi Province, Taiyuan 030024, ChinaWe propose a high-sensitivity fiber fault detection method using the feedback-delay signature of a modulated semiconductor laser. The modulated laser is directed to a fiber fault and then receives the fault echo, which, in principle, forms an external cavity feedback laser. The fault location, i.e., the external cavity length, is measured by the feedback-delay signature appearing on the laser modulation response curve. The resonance effect between the modulation frequency and external cavity frequency significantly enhanced the laser sensitivity to feedback light and then led to highly sensitive fault detection. Numerical simulations based on laser rate equations predicted that −118.1 dB sensitivity to fault echo light can be obtained.https://www.mdpi.com/2304-6732/9/7/454fiber fault locationsemiconductor lasersmodulation responseoptical feedbacktime-delay signature |
| spellingShingle | Zixiong Shi Tong Zhao Yuncai Wang Anbang Wang High-Sensitivity Fiber Fault Detection Method Using Feedback-Delay Signature of a Modulated Semiconductor Laser Photonics fiber fault location semiconductor lasers modulation response optical feedback time-delay signature |
| title | High-Sensitivity Fiber Fault Detection Method Using Feedback-Delay Signature of a Modulated Semiconductor Laser |
| title_full | High-Sensitivity Fiber Fault Detection Method Using Feedback-Delay Signature of a Modulated Semiconductor Laser |
| title_fullStr | High-Sensitivity Fiber Fault Detection Method Using Feedback-Delay Signature of a Modulated Semiconductor Laser |
| title_full_unstemmed | High-Sensitivity Fiber Fault Detection Method Using Feedback-Delay Signature of a Modulated Semiconductor Laser |
| title_short | High-Sensitivity Fiber Fault Detection Method Using Feedback-Delay Signature of a Modulated Semiconductor Laser |
| title_sort | high sensitivity fiber fault detection method using feedback delay signature of a modulated semiconductor laser |
| topic | fiber fault location semiconductor lasers modulation response optical feedback time-delay signature |
| url | https://www.mdpi.com/2304-6732/9/7/454 |
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