Compact spectroscopic sensor using an arrayed waveguide grating

Kodate, Kashiko; Komai, Yutaka

doi:10.1088/1464-4258/10/4/044011

Cited by 45 publications

(14 citation statements)

References 10 publications

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“…They are believed to be producible at lower cost than their conventional silica-based counterparts. They are becoming popular in sensing and medical applications [4]. Moreover, as polymers have a thermo-optic (TO) coefficient (dn/dT) ten times larger than silica, polymeric AWG devices can be thermally tuned over a wider spectral range [5] and may be integrated with polymer optical switches to form an add/drop multiplexer with much lower switching power consumption [6].…”

Section: Arrayed Waveguide Gratingmentioning

confidence: 99%

Polymer waveguide based hybrid opto-electric integration technology

et al. 2014

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While monolithic integration especially based on InP appears to be quite an expensive solution for optical devices, hybrid integration solutions using cheaper material platforms are considered powerful competitors because of the high freedom of design, yield optimization and relative cost-efficiency. Among them, the polymer planar-lightwave circuit (PLC) technology is regarded attractive as polymer offers the potential of fairly simple and low-cost fabrication, and of low-cost packaging. In our work, polymer PLC was fabricated by using the standard reactive ion etching (RIE) technique, while other active and passive devices can be integrated on the polymer PLC platform. Exemplary polymer waveguide devices was a 13-channel arrayed waveguide grating (AWG) chip, where the central channel cross-talk was below -30dB and the polarization dependent frequency shift was mitigated by inserting a half wave plate. An optical 90 0 hybrid was also realized with one 2×4 multi-mode interferometer (MMI). The excess insertion losses are below 4dB for the C-band, while the transmission imbalance is below 1.2dB. When such an optical hybrid was integrated vertically with mesa-type photodiodes, the responsivity of the individual PD was around 0.06 A/W, while the 3 dB bandwidth reaches 24 ~ 27 GHz, which is sufficient for 100Gbit/s receivers. Another example of the hybrid integration was to couple the polymer waveguides to fiber by applying fiber grooves, whose typical loss value was 0.2 dB per-facet over a broad spectral range from 1200-1600 nm.

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Section: Arrayed Waveguide Gratingmentioning

confidence: 99%

Polymer waveguide based hybrid opto-electric integration technology

et al. 2014

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“…Spectrum splitting has been widely used in the fields of optics and microwave such as spectral component analysis, filtering, optical switching, communication, signal processing, hyperspectral imaging, color holography, and biomedical sensing [ 24 , 25 , 26 , 27 , 28 ]. In conventional optical devices, spectrum splitting is enabled by either geometrical optics or diffractive optics.…”

Section: Introductionmentioning

confidence: 99%

Tunable Acoustic Metasurface with High-Q Spectrum Splitting

et al. 2018

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We propose a tunable acoustic metasurface using a nested structure as the microunit, which is constituted by two distinct resonators. Thanks to the coupling resonance for the microunit and by simply adjusting the rotation angle of the inner split cavity, this nested structure provides nearly 2π phase shift. The full-wave simulations demonstrate that the constructed metasurface can be tuned to reflect incident sound waves to different directions in the operation frequency region with a very narrow bandwidth, which is a key functionality for many applications such as filtering and imaging. Meanwhile, the reflected sound waves out of the operation frequency region always remain unchanged. As a result, a high Q-factor spectrum splitting can be realised. The presented metasurface is of importance to develop many metamaterial-based devices, such as tunable acoustic cloaks and acoustic switching devices.

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“…Motivated by this demand, there has been significant progress in the realization of integrated microspectrometers in different configurations such as arrayed-waveguide gratings [4,5], grating spectrometers [6][7][8], superprism-based spectrometers [9,10], and the recently demonstrated diffractive grating spectrometer combined with the thermally tunable microring resonators [11]. However, the main challenge of the integrated spectrometers that rely on dispersive components is the trade-off between the resolution and the size of the structure [12].…”

Section: Introductionmentioning

confidence: 99%

High resolution on-chip spectroscopy based on miniaturized microdonut resonators

Xia¹,

Eftekhar²,

Soltani³

et al. 2011

Opt. Express

148

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We experimentally demonstrate a high resolution integrated spectrometer on silicon on insulator (SOI) substrate using a large-scale array of microdonut resonators. Through top-view imaging and processing, the measured spectral response of the spectrometer shows a linewidth of ~0.6 nm with an operating bandwidth of ~50 nm. This high resolution and bandwidth is achieved in a compact size using miniaturized microdonut resonators (radius ~2 μm) with a high quality factor, single-mode operation, and a large free spectral range. The microspectrometer is realized using silicon process compatible fabrication and has a great potential as a high-resolution, large dynamic range, light-weight, compact, high-speed, and versatile microspectrometer.

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Compact spectroscopic sensor using an arrayed waveguide grating

Cited by 45 publications

References 10 publications

Polymer waveguide based hybrid opto-electric integration technology

Polymer waveguide based hybrid opto-electric integration technology

Tunable Acoustic Metasurface with High-Q Spectrum Splitting

High resolution on-chip spectroscopy based on miniaturized microdonut resonators

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