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Wide bandwidth and high resolution planar filter array based on DBR-metasurface-DBR structures

Horie, Yu and Arbabi, Amir and Arbabi, Ehsan and Kamali, Seyedeh Mahsa and Faraon, Andrei (2016) Wide bandwidth and high resolution planar filter array based on DBR-metasurface-DBR structures. Optics Express, 24 (11). pp. 11677-11682. ISSN 1094-4087.

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We propose and experimentally demonstrate a planar array of optical bandpass filters composed of low loss dielectric metasurface layers sandwiched between two distributed Bragg reflectors (DBRs). The two DBRs form a Fabry-Pérot resonator whose center wavelength is controlled by the design of the transmissive metasurface layer which functions as a phase shifting element. We demonstrate an array of bandpass filters with spatially varying center wavelengths covering a wide range of operation wavelengths of 250nm around λ = 1550nm (Δλ/λ = 16%). The center wavelengths of each filter are independently controlled only by changing the in-plane geometry of the sandwiched metasurfaces, and the experimentally measured quality factors are larger than 700. The demonstrated filter array can be directly integrated on top of photodetector arrays to realize on-chip high-resolution spectrometers with free-space coupling.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Horie, Yu0000-0001-7083-1270
Arbabi, Amir0000-0001-8831-7552
Arbabi, Ehsan0000-0002-5328-3863
Kamali, Seyedeh Mahsa0000-0002-6968-811X
Faraon, Andrei0000-0002-8141-391X
Additional Information:© 2016 Optical Society of America. Received 12 Apr 2016; revised 10 May 2016; accepted 17 May 2016; published 19 May 2016. This work was supported by Samsung Electronics and Defense Advanced Research Projects Agency (DARPA). Y. H. was supported by a Japan Student Services Organization (JASSO) fellowship. S. M. K. was supported by the “Light-Material Interactions in Energy Conversion” Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences under Award no. DE-SC0001293. The device nanofabrication was performed in the Kavli Nanoscience Institute at the California Institute of Technology.
Group:Kavli Nanoscience Institute
Funding AgencyGrant Number
Samsung ElectronicsUNSPECIFIED
Defense Advanced Research Projects Agency (DARPA)UNSPECIFIED
Japan Student Services Organization (JASSO)UNSPECIFIED
Department of Energy (DOE)DE-SC0001293
Issue or Number:11
Classification Code:OCIS codes: (050.6624) Subwavelength structures; (050.2230) Fabry-Perot; (130.7408) Wavelength filtering devices.
Record Number:CaltechAUTHORS:20160701-085424564
Persistent URL:
Official Citation:Yu Horie, Amir Arbabi, Ehsan Arbabi, Seyedeh Mahsa Kamali, and Andrei Faraon, "Wide bandwidth and high resolution planar filter array based on DBR-metasurface-DBR structures," Opt. Express 24, 11677-11682 (2016)
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:68801
Deposited By: Ruth Sustaita
Deposited On:01 Jul 2016 16:34
Last Modified:03 Oct 2019 10:16

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