A novel approach to interface high-Q Fabry–Pérot resonators with photonic circuits
The unique benefits of Fabry–Pérot resonators as frequency-stable reference cavities and as an efficient interface between atoms and photons make them an indispensable resource for emerging photonic technologies. To bring these performance benefits to next-generation communications, computation, and...
| Main Authors: | , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
AIP Publishing LLC
2023-11-01
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| Series: | APL Photonics |
| Online Access: | http://dx.doi.org/10.1063/5.0174384 |
| _version_ | 1827595856001368064 |
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| author | Haotian Cheng Naijun Jin Zhaowei Dai Chao Xiang Joel Guo Yishu Zhou Scott A. Diddams Franklyn Quinlan John Bowers Owen Miller Peter Rakich |
| author_facet | Haotian Cheng Naijun Jin Zhaowei Dai Chao Xiang Joel Guo Yishu Zhou Scott A. Diddams Franklyn Quinlan John Bowers Owen Miller Peter Rakich |
| author_sort | Haotian Cheng |
| collection | DOAJ |
| description | The unique benefits of Fabry–Pérot resonators as frequency-stable reference cavities and as an efficient interface between atoms and photons make them an indispensable resource for emerging photonic technologies. To bring these performance benefits to next-generation communications, computation, and time-keeping systems, it will be necessary to develop strategies to integrate compact Fabry–Pérot resonators with photonic integrated circuits. In this paper, we demonstrate a novel reflection cancellation circuit that utilizes a numerically optimized multi-port polarization-splitting grating coupler to efficiently interface high-finesse Fabry–Pérot resonators with a silicon photonic circuit. This circuit interface produces a spatial separation of the incident and reflected waves, as required for on-chip Pound–Drever–Hall frequency locking, while also suppressing unwanted back reflections from the Fabry–Pérot resonator. Using inverse design principles, we design and fabricate a polarization-splitting grating coupler that achieves 55% coupling efficiency. This design realizes an insertion loss of 5.8 dB for the circuit interface and more than 9 dB of back reflection suppression, and we demonstrate the versatility of this system by using it to interface several reflective off-chip devices. |
| first_indexed | 2024-03-09T03:00:26Z |
| format | Article |
| id | doaj.art-d79949d4e53e436c8c8a73269e1de2bd |
| institution | Directory Open Access Journal |
| issn | 2378-0967 |
| language | English |
| last_indexed | 2024-03-09T03:00:26Z |
| publishDate | 2023-11-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | APL Photonics |
| spelling | doaj.art-d79949d4e53e436c8c8a73269e1de2bd2023-12-04T17:13:19ZengAIP Publishing LLCAPL Photonics2378-09672023-11-01811116105116105-810.1063/5.0174384A novel approach to interface high-Q Fabry–Pérot resonators with photonic circuitsHaotian Cheng0Naijun Jin1Zhaowei Dai2Chao Xiang3Joel Guo4Yishu Zhou5Scott A. Diddams6Franklyn Quinlan7John Bowers8Owen Miller9Peter Rakich10Department of Applied Physics, Yale University, New Haven, Connecticut 06520, USADepartment of Applied Physics, Yale University, New Haven, Connecticut 06520, USADepartment of Applied Physics, Yale University, New Haven, Connecticut 06520, USADepartment of Electrical and Computer Engineering, University of California, Santa Barbara, California 93106, USADepartment of Electrical and Computer Engineering, University of California, Santa Barbara, California 93106, USADepartment of Applied Physics, Yale University, New Haven, Connecticut 06520, USANational Institute of Standards and Technology, 325 Broadway, Boulder, Colorado 80305, USANational Institute of Standards and Technology, 325 Broadway, Boulder, Colorado 80305, USADepartment of Electrical and Computer Engineering, University of California, Santa Barbara, California 93106, USADepartment of Applied Physics, Yale University, New Haven, Connecticut 06520, USADepartment of Applied Physics, Yale University, New Haven, Connecticut 06520, USAThe unique benefits of Fabry–Pérot resonators as frequency-stable reference cavities and as an efficient interface between atoms and photons make them an indispensable resource for emerging photonic technologies. To bring these performance benefits to next-generation communications, computation, and time-keeping systems, it will be necessary to develop strategies to integrate compact Fabry–Pérot resonators with photonic integrated circuits. In this paper, we demonstrate a novel reflection cancellation circuit that utilizes a numerically optimized multi-port polarization-splitting grating coupler to efficiently interface high-finesse Fabry–Pérot resonators with a silicon photonic circuit. This circuit interface produces a spatial separation of the incident and reflected waves, as required for on-chip Pound–Drever–Hall frequency locking, while also suppressing unwanted back reflections from the Fabry–Pérot resonator. Using inverse design principles, we design and fabricate a polarization-splitting grating coupler that achieves 55% coupling efficiency. This design realizes an insertion loss of 5.8 dB for the circuit interface and more than 9 dB of back reflection suppression, and we demonstrate the versatility of this system by using it to interface several reflective off-chip devices.http://dx.doi.org/10.1063/5.0174384 |
| spellingShingle | Haotian Cheng Naijun Jin Zhaowei Dai Chao Xiang Joel Guo Yishu Zhou Scott A. Diddams Franklyn Quinlan John Bowers Owen Miller Peter Rakich A novel approach to interface high-Q Fabry–Pérot resonators with photonic circuits APL Photonics |
| title | A novel approach to interface high-Q Fabry–Pérot resonators with photonic circuits |
| title_full | A novel approach to interface high-Q Fabry–Pérot resonators with photonic circuits |
| title_fullStr | A novel approach to interface high-Q Fabry–Pérot resonators with photonic circuits |
| title_full_unstemmed | A novel approach to interface high-Q Fabry–Pérot resonators with photonic circuits |
| title_short | A novel approach to interface high-Q Fabry–Pérot resonators with photonic circuits |
| title_sort | novel approach to interface high q fabry perot resonators with photonic circuits |
| url | http://dx.doi.org/10.1063/5.0174384 |
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