Nambiar, S and Muthuganesan, H and Sharma, T and Selvaraja, SK (2018) On-chip unidirectional dual-band fiber-chip grating coupler in silicon nitride. In: OSA Continuum, 1 (3). pp. 864-871.
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Abstract
We report, for the first time, a single state polarization (TE) dual-band grating fiber-chip coupler on a 700 nm thick silicon nitride platform that couples to both O and C band channels. Dual-band coupling with a single grating coupler is achieved using cross mode k-space equalization. By phase matching the first-order vertical TE01 mode and the fundamental TE00 mode in two distinct bands, we observe simultaneous co-directional dual-band coupling to a single waveguide. Experimental peak efficiency per coupler is measured to be -7.3 dB in the O-band and -8.2 dB in the C-band and the combined 1 dB bandwidth is observed to be 82 nm.
| Item Type: | Journal Article |
|---|---|
| Publication: | OSA Continuum |
| Publisher: | The Optical Society |
| Additional Information: | The copyright for this article belongs to the Authors. |
| Department/Centre: | Division of Interdisciplinary Sciences > Centre for Nano Science and Engineering |
| Date Deposited: | 23 Aug 2022 10:56 |
| Last Modified: | 23 Aug 2022 10:56 |
| URI: | https://eprints.iisc.ac.in/id/eprint/76215 |
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