A Chirp-Managed Tunable DBR Laser Based on Novel Cascaded Gratings
In this paper, a novel tunable DBR laser based on novel cascaded gratings is proposed for chirp management in high-speed direct modulation applications. The cascaded gratings, i.e., a tilted <inline-formula> <tex-math notation="LaTeX">$\pi $</tex-math></inline-formula&...
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| Format: | Article |
| Language: | English |
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IEEE
2018-01-01
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| Series: | IEEE Photonics Journal |
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| Online Access: | https://ieeexplore.ieee.org/document/8468990/ |
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| author | Yao Zhu Congying Feng Yuze Wu Yonglin Yu |
| author_facet | Yao Zhu Congying Feng Yuze Wu Yonglin Yu |
| author_sort | Yao Zhu |
| collection | DOAJ |
| description | In this paper, a novel tunable DBR laser based on novel cascaded gratings is proposed for chirp management in high-speed direct modulation applications. The cascaded gratings, i.e., a tilted <inline-formula> <tex-math notation="LaTeX">$\pi $</tex-math></inline-formula> phase-shift grating followed by a normal uniform Bragg grating, can provide a narrow-band reflection spectrum with a sharp falling slope on the longer wavelength side, so that the optical spectrum shaping and the detuned-loading effects can be enhanced. Simulation results indicate that the wavelength tuning range of the laser is about 10 nm and the 3-dB modulation bandwidth reaches up to 25 GHz. By simply adjusting the phase current and thus changing the detuned frequency, the extinction ratio and the frequency chirp can be optimized, which is helpful to improve the dispersion tolerance and reduce the dispersion power penalty. |
| format | Article |
| id | doaj-art-bc1522a650cb4341aa1263e6f79b8ff1 |
| institution | Kabale University |
| issn | 1943-0655 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj-art-bc1522a650cb4341aa1263e6f79b8ff12025-08-20T03:30:56ZengIEEEIEEE Photonics Journal1943-06552018-01-0110511010.1109/JPHOT.2018.28715138468990A Chirp-Managed Tunable DBR Laser Based on Novel Cascaded GratingsYao Zhu0https://orcid.org/0000-0003-4145-4669Congying Feng1Yuze Wu2Yonglin Yu3https://orcid.org/0000-0002-2422-7774Wuhan National Laboratory for Optoelectronics, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, ChinaWuhan National Laboratory for Optoelectronics, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, ChinaWuhan National Laboratory for Optoelectronics, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, ChinaWuhan National Laboratory for Optoelectronics, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, ChinaIn this paper, a novel tunable DBR laser based on novel cascaded gratings is proposed for chirp management in high-speed direct modulation applications. The cascaded gratings, i.e., a tilted <inline-formula> <tex-math notation="LaTeX">$\pi $</tex-math></inline-formula> phase-shift grating followed by a normal uniform Bragg grating, can provide a narrow-band reflection spectrum with a sharp falling slope on the longer wavelength side, so that the optical spectrum shaping and the detuned-loading effects can be enhanced. Simulation results indicate that the wavelength tuning range of the laser is about 10 nm and the 3-dB modulation bandwidth reaches up to 25 GHz. By simply adjusting the phase current and thus changing the detuned frequency, the extinction ratio and the frequency chirp can be optimized, which is helpful to improve the dispersion tolerance and reduce the dispersion power penalty.https://ieeexplore.ieee.org/document/8468990/Tunable lasergratingsdirect modulationchirp management. |
| spellingShingle | Yao Zhu Congying Feng Yuze Wu Yonglin Yu A Chirp-Managed Tunable DBR Laser Based on Novel Cascaded Gratings IEEE Photonics Journal Tunable laser gratings direct modulation chirp management. |
| title | A Chirp-Managed Tunable DBR Laser Based on Novel Cascaded Gratings |
| title_full | A Chirp-Managed Tunable DBR Laser Based on Novel Cascaded Gratings |
| title_fullStr | A Chirp-Managed Tunable DBR Laser Based on Novel Cascaded Gratings |
| title_full_unstemmed | A Chirp-Managed Tunable DBR Laser Based on Novel Cascaded Gratings |
| title_short | A Chirp-Managed Tunable DBR Laser Based on Novel Cascaded Gratings |
| title_sort | chirp managed tunable dbr laser based on novel cascaded gratings |
| topic | Tunable laser gratings direct modulation chirp management. |
| url | https://ieeexplore.ieee.org/document/8468990/ |
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