16-Wavelength DFB Laser Array With High Channel-Spacing Uniformity Based on Equivalent Phase-Shift Technique
The high accuracy of lasing wavelength spacing is one of the key requirements of a distributed feedback (DFB) semiconductor laser array. However, the nonuniformity of the wavelength spacing is increasingly deteriorating with the increase in the channel number in the laser array. In this paper, theor...
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| Format: | Article |
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IEEE
2014-01-01
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| Series: | IEEE Photonics Journal |
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| Online Access: | https://ieeexplore.ieee.org/document/6979198/ |
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| author | Yuechun Shi Lianyan Li Jilin Zheng Yunshan Zhang Bocang Qiu Xiangfei Chen |
| author_facet | Yuechun Shi Lianyan Li Jilin Zheng Yunshan Zhang Bocang Qiu Xiangfei Chen |
| author_sort | Yuechun Shi |
| collection | DOAJ |
| description | The high accuracy of lasing wavelength spacing is one of the key requirements of a distributed feedback (DFB) semiconductor laser array. However, the nonuniformity of the wavelength spacing is increasingly deteriorating with the increase in the channel number in the laser array. In this paper, theoretical study was made to investigate the effects of sampling pattern deviation and seed grating, as well as waveguide dispersion on the wavelength-spacing uniformity for multiwavelength DFB semiconductor laser arrays (MLAs) fabricated using the reconstruction equivalent chirp (REC) technique. A simple measurement method of dispersion for DFB semiconductor lasers based on the REC technique is also proposed. With the dispersion compensation being included in the sampling period design and small deviation in the seed grating period being guaranteed, a high-channel-count (16-channel) DFB laser array with precise channel spacing of 0.7944 nm/channel (design value of 0.80 nm/channel) was achieved in our experiment. It shows excellent channel-spacing uniformity, and most wavelength residuals are within <inline-formula> <tex-math notation="TeX">$\pm$</tex-math></inline-formula>0.10 nm. |
| format | Article |
| id | doaj-art-4cacb38d2cf648ed8a581b4763d2dab7 |
| institution | Kabale University |
| issn | 1943-0655 |
| language | English |
| publishDate | 2014-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj-art-4cacb38d2cf648ed8a581b4763d2dab72025-08-22T23:03:26ZengIEEEIEEE Photonics Journal1943-06552014-01-01661910.1109/JPHOT.2014.2374610697919816-Wavelength DFB Laser Array With High Channel-Spacing Uniformity Based on Equivalent Phase-Shift TechniqueYuechun Shi0Lianyan Li1Jilin Zheng2Yunshan Zhang3Bocang Qiu4Xiangfei Chen5Microwave Photonics Technol. Lab., Nanjing Univ., Nanjing, ChinaMicrowave Photonics Technol. Lab., Nanjing Univ., Nanjing, ChinaMicrowave Photonics Technol. Lab., Nanjing Univ., Nanjing, ChinaMicrowave Photonics Technol. Lab., Nanjing Univ., Nanjing, ChinaSuzhou Inst. of Nano-Tech & Nano-Bionics, Suzhou, ChinaMicrowave Photonics Technol. Lab., Nanjing Univ., Nanjing, ChinaThe high accuracy of lasing wavelength spacing is one of the key requirements of a distributed feedback (DFB) semiconductor laser array. However, the nonuniformity of the wavelength spacing is increasingly deteriorating with the increase in the channel number in the laser array. In this paper, theoretical study was made to investigate the effects of sampling pattern deviation and seed grating, as well as waveguide dispersion on the wavelength-spacing uniformity for multiwavelength DFB semiconductor laser arrays (MLAs) fabricated using the reconstruction equivalent chirp (REC) technique. A simple measurement method of dispersion for DFB semiconductor lasers based on the REC technique is also proposed. With the dispersion compensation being included in the sampling period design and small deviation in the seed grating period being guaranteed, a high-channel-count (16-channel) DFB laser array with precise channel spacing of 0.7944 nm/channel (design value of 0.80 nm/channel) was achieved in our experiment. It shows excellent channel-spacing uniformity, and most wavelength residuals are within <inline-formula> <tex-math notation="TeX">$\pm$</tex-math></inline-formula>0.10 nm.https://ieeexplore.ieee.org/document/6979198/Distributed feedback lasersLaser arraysDispersive mediaWavelength measurement |
| spellingShingle | Yuechun Shi Lianyan Li Jilin Zheng Yunshan Zhang Bocang Qiu Xiangfei Chen 16-Wavelength DFB Laser Array With High Channel-Spacing Uniformity Based on Equivalent Phase-Shift Technique IEEE Photonics Journal Distributed feedback lasers Laser arrays Dispersive media Wavelength measurement |
| title | 16-Wavelength DFB Laser Array With High Channel-Spacing Uniformity Based on Equivalent Phase-Shift Technique |
| title_full | 16-Wavelength DFB Laser Array With High Channel-Spacing Uniformity Based on Equivalent Phase-Shift Technique |
| title_fullStr | 16-Wavelength DFB Laser Array With High Channel-Spacing Uniformity Based on Equivalent Phase-Shift Technique |
| title_full_unstemmed | 16-Wavelength DFB Laser Array With High Channel-Spacing Uniformity Based on Equivalent Phase-Shift Technique |
| title_short | 16-Wavelength DFB Laser Array With High Channel-Spacing Uniformity Based on Equivalent Phase-Shift Technique |
| title_sort | 16 wavelength dfb laser array with high channel spacing uniformity based on equivalent phase shift technique |
| topic | Distributed feedback lasers Laser arrays Dispersive media Wavelength measurement |
| url | https://ieeexplore.ieee.org/document/6979198/ |
| work_keys_str_mv | AT yuechunshi 16wavelengthdfblaserarraywithhighchannelspacinguniformitybasedonequivalentphaseshifttechnique AT lianyanli 16wavelengthdfblaserarraywithhighchannelspacinguniformitybasedonequivalentphaseshifttechnique AT jilinzheng 16wavelengthdfblaserarraywithhighchannelspacinguniformitybasedonequivalentphaseshifttechnique AT yunshanzhang 16wavelengthdfblaserarraywithhighchannelspacinguniformitybasedonequivalentphaseshifttechnique AT bocangqiu 16wavelengthdfblaserarraywithhighchannelspacinguniformitybasedonequivalentphaseshifttechnique AT xiangfeichen 16wavelengthdfblaserarraywithhighchannelspacinguniformitybasedonequivalentphaseshifttechnique |