SWIFTS: a groundbreaking integrated technology for high-performance spectroscopy and optical sensors

Bonneville, Christophe; Thomas, F.; Poirier, Mikhael de Mengin; Coarer, E. Le; Bénech, Pierre; Gonthiez, T.; Morand, Alain; Coutant, Olivier; Morino, Eric; Puget, Renaud; Martin, Bruno

doi:10.1117/12.2000451

Cited by 18 publications

(16 citation statements)

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“…This phenomenon generates a stationary wave. The energy extraction required to sample the standing wave is obtained by sampling the evanescent field on one side of the waveguide using nano-samplers (also called evanescent field samplers or antennas) located in the evanescent field [5][6][7][8][9]. These nano-samplers scatter the light around an axis perpendicular to that of propagation of the waveguide.…”

Section: Waveguide Spectrometer Concept Reviewmentioning

confidence: 99%

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Lippmann waveguide spectrometer with enhanced throughput and bandwidth for space and commercial applications

Madi¹,

Ceyssens²,

Shorubalko³

et al. 2018

Opt. Express

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This article presents an innovative high spectral resolution waveguide spectrometer, from the concept to the prototype demonstration and the test results. The main goal is to build the smallest possible Fourier transform spectrometer (FTS) with state of the art technology. This waveguide FTS takes advantage of a customized pattern of nano-samplers fabricated on the surface of a planar waveguide that allows the increase of the measurement points necessary for increasing the spectral bandwidth of the FTS in a fully static way. The use of a planar waveguide on the other hand allows enhancing the throughput in a waveguide spectrometer compared to the conventional devices made of single-mode waveguides. A prototype is made in silicon oxynitride/silicon dioxide technology and characterized in the visible range. This waveguide spectrometer shows a nominal bandwidth of 256~nm at a central wavelength of 633~nm thanks to a custom pattern of nanodisks providing a μm sampling interval. The implementation of this innovative waveguide FTS for a real-case scenario is explored and further development of such device for the imaging FTS application is discussed.

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Section: Waveguide Spectrometer Concept Reviewmentioning

confidence: 99%

“…We report the conceptual design and prototype development of a fully integrated waveguide spectrometer with enlarged throughput and enhanced spectral bandwidth, compared to conventional waveguide spectrometers [5][6][7][8][9]. In this new instrument, customized patterns of nano-samplers are fabricated on the surface of planar waveguide.…”

Section: Introductionmentioning

confidence: 99%

Lippmann waveguide spectrometer with enhanced throughput and bandwidth for space and commercial applications

Madi¹,

Ceyssens²,

Shorubalko³

et al. 2018

Opt. Express

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“…Nowadays, with the development of Nanosat projects, the possibility of achieving very high resolution in a very compact and light device gives waveguide optics a very broad field of application. Our approach is to develop integrated spectrometers where the spectrum is obtained by sampling interference fringes of the source, as proposed in the SWIFTS-Lippmann configuration [7][8][9][10]. The stationary wave is obtained by superposition of direct and backward guided beams, the last being obtained by reflection at the output of the channel waveguide.…”

Section: High Spectral Resolution Integrated Spectrometersmentioning

confidence: 99%

High resolution and wideband integrated optics infrared stationary-wave spectrometer fabricated by ultrafast laser inscription

Heras

Aldana

Morand

et al. 2018

Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation III

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Direct laser writing is a powerful technique for the development of astrophotonic devices, namely by allowing 3D structuring of waveguides and avoiding in-plane crossings that can induce losses and crosstalk in multi-telescope beam combiners. In this work, a multiplexed device is proposed in order to increase the spectral bandwidth to hundreds of nm, for a central wavelength of 1580nm. Our device is fabricated by ultrafast laser inscription of type I waveguides in bulk IR-grade fused silica glass. A first part of the study was devoted to finding the optical fabrication parameters in terms of depth, speed and number of tracks needed to achieve an optimal waveguide, single mode in the near IR. A second part was focused to the fabrication of different optical lanterns, from one multimode input to several (4 or 16) single mode outputs. The optical chip consists of a multimode input slit-waveguide, that adiabatically converts into an aligned matrix of 4 or 16 single-mode channel waveguides, with a pitch corresponding to the detector pixel size. Two separations (20m and 64m) were studied, in order to avoid crosstalk between parallel waveguides (directional coupling) and from extracted flux into the detector (pixel crosstalk). A final part is dedicated to the spectrometer realization, based on the sampling of a stationary wave inside the waveguide.

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“…The energy extraction required to sample the standing wave is obtained by sampling the evanescent field on one side of the waveguide using nano-samplers-also called evanescent field samplers or antennas-located in the evanescent field. [2][3][4][5][6] These nano-samplers scatter the light around an axis perpendicular to that of propagation of the waveguide. For each nano-sampler, the scattered light is detected by a pixel aligned with this axis.…”

Section: Introductionmentioning

confidence: 99%

Focal Plane Array Spectrometer FPAS: preliminary development results and recommendations

Madi¹,

Osowiecki²,

Alberti³

et al. 2021

International Conference on Space Optics — ICSO 2020

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The focal plane array spectrometer (FPAS) is a miniaturization concept for imaging spectrometers compared to classical dispersive and FTS instruments. FPAS is an imaging implementation of interferogram integrated FTS, targeting space-borne and commercial applications. It is based on a bi-dimensional array of waveguide spectrometers which can be assembled in small size, and form a compact package of single spectrometers. When this system is positioned in the focal plane of an objective (in a similar way as a CMOS detector array or a CCD in a camera), it will allow imaging spectrometry of the observed surface (objects). The instrument is therefore reduced to the imaging optics and the FPAS in the focal plane, which takes over the role of spectrometer and detector array. This is a breakthrough concept enabling imaging spectroscopy in a reduced volume with low power consumption. This article describes the preliminary development results of a FPAS based on arrays of single-mode waveguides. The developed linear array forms an acquisition line to image with lateral scanning. The light is injected with micro-lenses into several optical polymer waveguides. In order to circumvent the sub-sampling limitation due to nano-sampler spacing and to expand the spectral bandwidth, the basic principle of a static Lippmann spectrometer is combined with a dynamic Fourier-transform spectrometer, by adopting a piezo actuated movable mirror located at the waveguide end-facet. This waveguide spectrometer is designed for a nominal bandwidth of 25 nm at central wavelength of 762.5 nm and a spectral resolution of about 0.06 nm. The throughput and SNR in this preliminary linear array prototype are analysed and design limitations are discussed. The authors then introduce a new method for the realization of FPAS aiming at enhancing throughput and bandwidth of the integrated device. This new concept uses a bundle of single-mode waveguides, instead of only one, at the focal distance of the optical element. The novel FPAS concept is elaborated and its characteristics are described.

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SWIFTS: a groundbreaking integrated technology for high-performance spectroscopy and optical sensors

Cited by 18 publications

References 0 publications

Lippmann waveguide spectrometer with enhanced throughput and bandwidth for space and commercial applications

Lippmann waveguide spectrometer with enhanced throughput and bandwidth for space and commercial applications

High resolution and wideband integrated optics infrared stationary-wave spectrometer fabricated by ultrafast laser inscription

Focal Plane Array Spectrometer FPAS: preliminary development results and recommendations

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