Vertically Coupled Partially Tapered Ridge Waveguide Semiconductor FP Laser With Improved Divergence Angles
In this work, we present a semiconductor FP laser design with significantly reduced divergence angles particularly in the vertical direction. The laser has a pair of vertically stacked, propagation constant unmatched twin waveguides that is coupled by a tapered ridge at the output end. As such, the...
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| Format: | Article |
| Language: | English |
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IEEE
2020-01-01
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| Series: | IEEE Photonics Journal |
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| Online Access: | https://ieeexplore.ieee.org/document/9212553/ |
| _version_ | 1828926423524442112 |
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| author | Mingwen Lan Xun Li |
| author_facet | Mingwen Lan Xun Li |
| author_sort | Mingwen Lan |
| collection | DOAJ |
| description | In this work, we present a semiconductor FP laser design with significantly reduced divergence angles particularly in the vertical direction. The laser has a pair of vertically stacked, propagation constant unmatched twin waveguides that is coupled by a tapered ridge at the output end. As such, the laser has a significantly extended mode profile at the output section while the light propagation in the main section is not affected. Our simulation result shows that the divergence angles can be reduced to 13° × 14° (horizontal × vertical), as opposed to typical values of 20° × 29° in conventional ridge waveguide laser structures without a sport size convertor integrated. This design does not need any regrowth, with no appreciable penalty brought to other laser characteristics either. |
| first_indexed | 2024-12-13T23:32:21Z |
| format | Article |
| id | doaj.art-de66c23853224260b2d9a8db927bc1c4 |
| institution | Directory Open Access Journal |
| issn | 1943-0655 |
| language | English |
| last_indexed | 2024-12-13T23:32:21Z |
| publishDate | 2020-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj.art-de66c23853224260b2d9a8db927bc1c42022-12-21T23:27:23ZengIEEEIEEE Photonics Journal1943-06552020-01-0112511210.1109/JPHOT.2020.30288679212553Vertically Coupled Partially Tapered Ridge Waveguide Semiconductor FP Laser With Improved Divergence AnglesMingwen Lan0Xun Li1https://orcid.org/0000-0002-1921-1006Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, ChinaDepartment of Electrical and Computer Engineering, McMaster University, Hamilton, ON, CanadaIn this work, we present a semiconductor FP laser design with significantly reduced divergence angles particularly in the vertical direction. The laser has a pair of vertically stacked, propagation constant unmatched twin waveguides that is coupled by a tapered ridge at the output end. As such, the laser has a significantly extended mode profile at the output section while the light propagation in the main section is not affected. Our simulation result shows that the divergence angles can be reduced to 13° × 14° (horizontal × vertical), as opposed to typical values of 20° × 29° in conventional ridge waveguide laser structures without a sport size convertor integrated. This design does not need any regrowth, with no appreciable penalty brought to other laser characteristics either.https://ieeexplore.ieee.org/document/9212553/Coupled mode theorysemiconductor lasersdivergence angles |
| spellingShingle | Mingwen Lan Xun Li Vertically Coupled Partially Tapered Ridge Waveguide Semiconductor FP Laser With Improved Divergence Angles IEEE Photonics Journal Coupled mode theory semiconductor lasers divergence angles |
| title | Vertically Coupled Partially Tapered Ridge Waveguide Semiconductor FP Laser With Improved Divergence Angles |
| title_full | Vertically Coupled Partially Tapered Ridge Waveguide Semiconductor FP Laser With Improved Divergence Angles |
| title_fullStr | Vertically Coupled Partially Tapered Ridge Waveguide Semiconductor FP Laser With Improved Divergence Angles |
| title_full_unstemmed | Vertically Coupled Partially Tapered Ridge Waveguide Semiconductor FP Laser With Improved Divergence Angles |
| title_short | Vertically Coupled Partially Tapered Ridge Waveguide Semiconductor FP Laser With Improved Divergence Angles |
| title_sort | vertically coupled partially tapered ridge waveguide semiconductor fp laser with improved divergence angles |
| topic | Coupled mode theory semiconductor lasers divergence angles |
| url | https://ieeexplore.ieee.org/document/9212553/ |
| work_keys_str_mv | AT mingwenlan verticallycoupledpartiallytaperedridgewaveguidesemiconductorfplaserwithimproveddivergenceangles AT xunli verticallycoupledpartiallytaperedridgewaveguidesemiconductorfplaserwithimproveddivergenceangles |