Expanding sampling in a SWIFTS-Lippmann spectrometer using an electro-optic Mach-Zehnder modulator

Thomas, F.; Heidmann, Samuel; Loridat, Joran; Mengin, M. de; Morand, Alain; Bénech, Pierre; Bonneville, Christophe; Gonthiez, T.; Coarer, Etienne P. Le; Martín, G.

doi:10.1117/12.2178972

Cited by 6 publications

(5 citation statements)

References 6 publications

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“…In France, researchers at Joseph Fourier University have recently explored the idea of introducing an external Mach-Zehnder intensity modulator prior to the waveguide spectrometer (e.g. SWIFTS) with an initial imbalance between the arms for scanning the interferogram fringes under the nano-samplers in a dynamic manner by applying a voltage (~100 V) [27]. It is clear that the use of a movable mirror [26] or an external optical signal conditioning element [27] (e.g.…”

Section: State Of the Artmentioning

confidence: 99%

“…SWIFTS) with an initial imbalance between the arms for scanning the interferogram fringes under the nano-samplers in a dynamic manner by applying a voltage (~100 V) [27]. It is clear that the use of a movable mirror [26] or an external optical signal conditioning element [27] (e.g. Mach-Zehnder modulator) increases the size and complexity of the waveguide spectrometer and these techniques are spiritually against the miniaturization concept.…”

Section: State Of the Artmentioning

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: State Of the Artmentioning

confidence: 99%

Section: State Of the Artmentioning

confidence: 99%

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

Madi¹,

Ceyssens²,

Shorubalko³

et al. 2018

Opt. Express

View full text Add to dashboard Cite

show abstract

“…Furthermore, the reconstruction spectral bandwidth (∆σ = 1/(4 n ∆ z )) is also limited by the sampling step (∆ z ). In recent years, a thermal or electrical tuning method has been used to realize an on-chip integrated FT spectrum detection [ 31 , 32 ], but the system requires an external reflecting mirror and there is a crosstalk effect between neighboring detectors.…”

Section: Introductionmentioning

confidence: 99%

Dual Tunable MZIs Stationary-Wave Integrated Fourier Transform Spectrum Detection

Chen

Huang

Wang

et al. 2021

Sensors

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In order to resolve spectral alias due to under sampling in traditional stationary-wave integrated Fourier transform (SWIFT) spectrometers, an all-on-chip waveguide based on dual tunable Mach-Zehnder interferometer (MZI) stationary-wave integrated Fourier transform technology (DTM-SWIFT) is proposed. Several gold nanowires are asymmetrically positioned at two sides of zero optical path difference and scatter the interference fringes information, which can avoid aliasing of spectral signals and help to gain high spectral resolution. A systematic theoretical analysis is carried on in detail, including the optical distribution characteristics based on multi-beam interference, stationary-wave theorem and signal reconstruction method based on the FT technology. The results show that the method can complete a resolution of 6 nm for Gauss spectrum reconstruction using only 6 gold nanowires, and a resolution of 5 cm−1 for Raman spectrum reconstruction using 25 gold nanowires.

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“…Concerning SWIFTSs, electro-optic tuning of the interferometer arms allows for effective change in the relative path length between two counter-propagating signals, hence it conceptually corresponds to scanning the optical path difference (OPD) by moving one of the mirrors in traditional Fourier-transform infra-red spectrometry (FTIR) systems based on Michelson interferometers 20,21,42 . This approach allows to completely oversample the established standing-wave by carefully tuning the applied DC field to the modulation electrodes, such that the waveform is progressively shifted across the sampling region in order to overcome the physical limitations imposed by circuit and EFSs design.…”

mentioning

confidence: 99%

Monolithic thin-film lithium niobate broadband spectrometer with one nanometre resolution

Finco,

Li,

Pohl

et al. 2024

Nat Commun

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Miniaturised optical spectrometers are attractive due to their small footprint, low weight, robustness and stability even in harsh environments such as space or industrial facilities. We report on a stationary-wave integrated Fourier-transform spectrometer featuring a measured optical bandwidth of 325 nm and a theoretical spectral resolution of 1.2 nm. We fabricate and test on lithium niobate-on-insulator to take full advantage of the platform, namely electro-optic modulation, broad transparency range and the low optical loss achieved thanks to matured fabrication techniques. We use the electro-optic effect and develop innovative layouts to overcome the undersampling limitations and improve the spectral resolution, thus providing a framework to enhance the performance of all devices sharing the same working principle. With our work, we add another important element to the portfolio of integrated lithium-niobate optical devices as our spectrometer can be combined with multiple other building blocks to realise functional, monolithic and compact photonic integrated circuits.

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Expanding sampling in a SWIFTS-Lippmann spectrometer using an electro-optic Mach-Zehnder modulator

Cited by 6 publications

References 6 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

Dual Tunable MZIs Stationary-Wave Integrated Fourier Transform Spectrum Detection

Monolithic thin-film lithium niobate broadband spectrometer with one nanometre resolution

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