High-Speed Directly Modulated Laser Integrated with SOA
In this paper, we present a directly modulated laser (DML) using a partially corrugated grating (PCG) and integrated with a semiconductor optical amplifier (SOA). The influence of the quasi-high-pass filter properties of the SOA on the bandwidth was explored, resulting in high optical power output a...
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MDPI AG
2025-05-01
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| Series: | Photonics |
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| Online Access: | https://www.mdpi.com/2304-6732/12/5/450 |
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| author | Jia Chen Dechao Ban Ya Jin Jinhua Bai Keqi Cao Xinyan Zhang Hang Yu Wei Lin Xiaonan Chen Ming Li Ninghua Zhu Yu Liu |
| author_facet | Jia Chen Dechao Ban Ya Jin Jinhua Bai Keqi Cao Xinyan Zhang Hang Yu Wei Lin Xiaonan Chen Ming Li Ninghua Zhu Yu Liu |
| author_sort | Jia Chen |
| collection | DOAJ |
| description | In this paper, we present a directly modulated laser (DML) using a partially corrugated grating (PCG) and integrated with a semiconductor optical amplifier (SOA). The influence of the quasi-high-pass filter properties of the SOA on the bandwidth was explored, resulting in high optical power output at lower current levels, with a bandwidth surpassing 25 GHz and an output power above 25 mW. The PCG design boosts the lasing mode’s resistance to random phase fluctuations at the rear facet, hence boosting the mode stability of the laser with a side-mode suppression ratio (SMSR) of over 44 dB. Furthermore, we performed back-to-back (BTB) 26.5625 Gbps NRZ data transmission experiments at room temperature (25 °C) with a modulation current of 60 mA. The results reveal that the transmitter and dispersion eye closure (TDEC) of the fabricated DML is lower than that of a conventional laser when the SOA area current reaches a specific threshold, demonstrating the enhanced signal transmission capabilities of our design. This laser structure offers a fresh strategy for the development of high-power, high-speed DMLs. |
| format | Article |
| id | doaj-art-c9dd2da4ddeb42daa29edb7b5e72fc44 |
| institution | OA Journals |
| issn | 2304-6732 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Photonics |
| spelling | doaj-art-c9dd2da4ddeb42daa29edb7b5e72fc442025-08-20T02:33:55ZengMDPI AGPhotonics2304-67322025-05-0112545010.3390/photonics12050450High-Speed Directly Modulated Laser Integrated with SOAJia Chen0Dechao Ban1Ya Jin2Jinhua Bai3Keqi Cao4Xinyan Zhang5Hang Yu6Wei Lin7Xiaonan Chen8Ming Li9Ninghua Zhu10Yu Liu11The Key Laboratory of Optoelectronic Materials and Devices, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, ChinaThe Key Laboratory of Optoelectronic Materials and Devices, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, ChinaThe Key Laboratory of Optoelectronic Materials and Devices, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, ChinaThe Key Laboratory of Optoelectronic Materials and Devices, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, ChinaThe Key Laboratory of Optoelectronic Materials and Devices, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, ChinaThe Key Laboratory of Optoelectronic Materials and Devices, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, ChinaThe Key Laboratory of Optoelectronic Materials and Devices, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, ChinaThe Key Laboratory of Optoelectronic Materials and Devices, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, ChinaThe Key Laboratory of Optoelectronic Materials and Devices, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, ChinaThe Key Laboratory of Optoelectronic Materials and Devices, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, ChinaInstitute of Intelligent Photonics, Nankai University, Tianjin 300071, ChinaThe Key Laboratory of Optoelectronic Materials and Devices, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, ChinaIn this paper, we present a directly modulated laser (DML) using a partially corrugated grating (PCG) and integrated with a semiconductor optical amplifier (SOA). The influence of the quasi-high-pass filter properties of the SOA on the bandwidth was explored, resulting in high optical power output at lower current levels, with a bandwidth surpassing 25 GHz and an output power above 25 mW. The PCG design boosts the lasing mode’s resistance to random phase fluctuations at the rear facet, hence boosting the mode stability of the laser with a side-mode suppression ratio (SMSR) of over 44 dB. Furthermore, we performed back-to-back (BTB) 26.5625 Gbps NRZ data transmission experiments at room temperature (25 °C) with a modulation current of 60 mA. The results reveal that the transmitter and dispersion eye closure (TDEC) of the fabricated DML is lower than that of a conventional laser when the SOA area current reaches a specific threshold, demonstrating the enhanced signal transmission capabilities of our design. This laser structure offers a fresh strategy for the development of high-power, high-speed DMLs.https://www.mdpi.com/2304-6732/12/5/450directly modulated lasersemiconductor optical amplifierquasi-high-pass filteringhigh power |
| spellingShingle | Jia Chen Dechao Ban Ya Jin Jinhua Bai Keqi Cao Xinyan Zhang Hang Yu Wei Lin Xiaonan Chen Ming Li Ninghua Zhu Yu Liu High-Speed Directly Modulated Laser Integrated with SOA Photonics directly modulated laser semiconductor optical amplifier quasi-high-pass filtering high power |
| title | High-Speed Directly Modulated Laser Integrated with SOA |
| title_full | High-Speed Directly Modulated Laser Integrated with SOA |
| title_fullStr | High-Speed Directly Modulated Laser Integrated with SOA |
| title_full_unstemmed | High-Speed Directly Modulated Laser Integrated with SOA |
| title_short | High-Speed Directly Modulated Laser Integrated with SOA |
| title_sort | high speed directly modulated laser integrated with soa |
| topic | directly modulated laser semiconductor optical amplifier quasi-high-pass filtering high power |
| url | https://www.mdpi.com/2304-6732/12/5/450 |
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