Integrated reconstructive spectrometer with programmable photonic circuits
Abstract Optical spectroscopic sensors are a powerful tool to reveal light-matter interactions in many fields. Miniaturizing the currently bulky spectrometers has become imperative for the wide range of applications that demand in situ or even in vitro characterization systems, a field that is growi...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2023-10-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-023-42197-3 |
| _version_ | 1797558547491323904 |
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| author | Chunhui Yao Kangning Xu Wanlu Zhang Minjia Chen Qixiang Cheng Richard Penty |
| author_facet | Chunhui Yao Kangning Xu Wanlu Zhang Minjia Chen Qixiang Cheng Richard Penty |
| author_sort | Chunhui Yao |
| collection | DOAJ |
| description | Abstract Optical spectroscopic sensors are a powerful tool to reveal light-matter interactions in many fields. Miniaturizing the currently bulky spectrometers has become imperative for the wide range of applications that demand in situ or even in vitro characterization systems, a field that is growing rapidly. In this paper, we propose a novel integrated reconstructive spectrometer with programmable photonic circuits by simply using a few engineered MZI elements. This design effectively creates an exponentially scalable number of uncorrelated sampling channels over an ultra-broad bandwidth without incurring additional hardware costs, enabling ultra-high resolution down to single-digit picometers. Experimentally, we implement an on-chip spectrometer with a 6-stage cascaded MZI structure and demonstrate <10 pm resolution with >200 nm bandwidth using only 729 sampling channels. This achieves a bandwidth-to-resolution ratio of over 20,000, which is, to our best knowledge, about one order of magnitude greater than any reported miniaturized spectrometers to date. |
| first_indexed | 2024-03-10T17:32:01Z |
| format | Article |
| id | doaj.art-d3e9b4d01d1a461b87e65653aafd746e |
| institution | Directory Open Access Journal |
| issn | 2041-1723 |
| language | English |
| last_indexed | 2024-03-10T17:32:01Z |
| publishDate | 2023-10-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj.art-d3e9b4d01d1a461b87e65653aafd746e2023-11-20T09:59:54ZengNature PortfolioNature Communications2041-17232023-10-0114111010.1038/s41467-023-42197-3Integrated reconstructive spectrometer with programmable photonic circuitsChunhui Yao0Kangning Xu1Wanlu Zhang2Minjia Chen3Qixiang Cheng4Richard Penty5Centre for Photonic Systems, Electrical Engineering Division, Department of Engineering, University of CambridgeGlitterinTech LimitedCentre for Photonic Systems, Electrical Engineering Division, Department of Engineering, University of CambridgeCentre for Photonic Systems, Electrical Engineering Division, Department of Engineering, University of CambridgeCentre for Photonic Systems, Electrical Engineering Division, Department of Engineering, University of CambridgeCentre for Photonic Systems, Electrical Engineering Division, Department of Engineering, University of CambridgeAbstract Optical spectroscopic sensors are a powerful tool to reveal light-matter interactions in many fields. Miniaturizing the currently bulky spectrometers has become imperative for the wide range of applications that demand in situ or even in vitro characterization systems, a field that is growing rapidly. In this paper, we propose a novel integrated reconstructive spectrometer with programmable photonic circuits by simply using a few engineered MZI elements. This design effectively creates an exponentially scalable number of uncorrelated sampling channels over an ultra-broad bandwidth without incurring additional hardware costs, enabling ultra-high resolution down to single-digit picometers. Experimentally, we implement an on-chip spectrometer with a 6-stage cascaded MZI structure and demonstrate <10 pm resolution with >200 nm bandwidth using only 729 sampling channels. This achieves a bandwidth-to-resolution ratio of over 20,000, which is, to our best knowledge, about one order of magnitude greater than any reported miniaturized spectrometers to date.https://doi.org/10.1038/s41467-023-42197-3 |
| spellingShingle | Chunhui Yao Kangning Xu Wanlu Zhang Minjia Chen Qixiang Cheng Richard Penty Integrated reconstructive spectrometer with programmable photonic circuits Nature Communications |
| title | Integrated reconstructive spectrometer with programmable photonic circuits |
| title_full | Integrated reconstructive spectrometer with programmable photonic circuits |
| title_fullStr | Integrated reconstructive spectrometer with programmable photonic circuits |
| title_full_unstemmed | Integrated reconstructive spectrometer with programmable photonic circuits |
| title_short | Integrated reconstructive spectrometer with programmable photonic circuits |
| title_sort | integrated reconstructive spectrometer with programmable photonic circuits |
| url | https://doi.org/10.1038/s41467-023-42197-3 |
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