Tunable broadband mode power dividers based on a wavelength-insensitive coupler using the thermo-optic effect for flexible modal power adjustment in a mode-division multiplexing network
We demonstrate tunable broadband two-mode power dividers based on a wavelength-insensitive coupler for a mode-division multiplexing system. Ultra-small TE0-TE1 and TE0-TE2 mode dividers based on Si-wire waveguides are designed based on the coupled-mode theory. Tunability is achieved by using the the...
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| Veröffentlicht in: | Journal of the Optical Society of America. B, Optical physics Optical physics, 2021-03, Vol.38 (3), p.946-952 |
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| container_end_page | 952 |
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| container_issue | 3 |
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| container_title | Journal of the Optical Society of America. B, Optical physics |
| container_volume | 38 |
| creator | Nakamura, Kodai Fujisawa, Takeshi Sakamoto, Taiji Matsui, Takashi Nakajima, Kazuhide Saitoh, Kunimasa |
| description | We demonstrate tunable broadband two-mode power dividers based on a wavelength-insensitive coupler for a mode-division multiplexing system. Ultra-small TE0-TE1 and TE0-TE2 mode dividers based on Si-wire waveguides are designed based on the coupled-mode theory. Tunability is achieved by using the thermo-optic effect. In both dividers, arbitrary branching ratios can be realized over a wide wavelength range. We experimentally demonstrated for the first time, to the best of our knowledge, a tunable TE0-TE1 mode divider based on Si-wire waveguides. From the experimental results, an arbitrary branching ratio can be achieved by adjusting the injection current to a TiN heater placed on top of one of the delay lines. (C) 2021 Optical Society of America |
| doi_str_mv | 10.1364/JOSAB.415499 |
| format | Article |
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| ispartof | Journal of the Optical Society of America. B, Optical physics, 2021-03, Vol.38 (3), p.946-952 |
| issn | 0740-3224 1520-8540 |
| language | eng |
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| source | Web of Science - Science Citation Index Expanded - 2021<img src="https://exlibris-pub.s3.amazonaws.com/fromwos-v2.jpg" />; Optica Publishing Group Journals |
| subjects | Optics Physical Sciences Science & Technology |
| title | Tunable broadband mode power dividers based on a wavelength-insensitive coupler using the thermo-optic effect for flexible modal power adjustment in a mode-division multiplexing network |
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