Flexibly tunable dual-mode semiconductor laser based on amplified feedback.
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| Title: | Flexibly tunable dual-mode semiconductor laser based on amplified feedback. |
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| Authors: | Chen, Huibin1,2,3 (AUTHOR) chenhuibin@qztc.edu.cn, You, Zhenyu1,2,3 (AUTHOR), Xu, Kaize1,2,3 (AUTHOR) |
| Source: | Applied Physics B: Lasers & Optics. Mar2025, Vol. 131 Issue 3, p1-6. 6p. |
| Subjects: | Optical feedback, Semiconductor optical amplifiers, Telecommunication, Masers, Microwave photonics |
| Abstract: | We propose and fabricate a monolithically integrated dual-mode semiconductor laser (DML) based on optical amplified feedback, where the adjustable optical self-injection feedback could induce dual-wavelength lasing, and the sub-millimeter total cavity length provides access to be microwave source. When keeping the injection current of semiconductor optical amplifier (SOA) be constant, inject different current for the segment of distributed feedback laser (DFB), we have achieved tunable microwave signal with different ranges of 10 GHz and 18 GHz respectively, which significantly simplifies the system configuration and reduces the footprint, power consumption and cost. Besides, through a special current injection scheme for the two-segment semiconductor laser, whole wavelength tuning with fixed wavelength spacing can also be realized. It provides a convenient and low-cost photonic solution for flexible and tunable microwave sources. [ABSTRACT FROM AUTHOR] |
| Copyright of Applied Physics B: Lasers & Optics is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
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| Abstract: | We propose and fabricate a monolithically integrated dual-mode semiconductor laser (DML) based on optical amplified feedback, where the adjustable optical self-injection feedback could induce dual-wavelength lasing, and the sub-millimeter total cavity length provides access to be microwave source. When keeping the injection current of semiconductor optical amplifier (SOA) be constant, inject different current for the segment of distributed feedback laser (DFB), we have achieved tunable microwave signal with different ranges of 10 GHz and 18 GHz respectively, which significantly simplifies the system configuration and reduces the footprint, power consumption and cost. Besides, through a special current injection scheme for the two-segment semiconductor laser, whole wavelength tuning with fixed wavelength spacing can also be realized. It provides a convenient and low-cost photonic solution for flexible and tunable microwave sources. [ABSTRACT FROM AUTHOR] |
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| ISSN: | 09462171 |
| DOI: | 10.1007/s00340-024-08378-8 |
