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Monolithic on-chip mid-IR methane gas sensor with waveguide-integrated detector

Journal Article · · Applied Physics Letters
DOI:https://doi.org/10.1063/1.5053599· OSTI ID:1614526

Herein we demonstrate a monolithic waveguide sensor integrated with a detector on-chip for mid-infrared absorption spectroscopic sensing. The optical sensing element comprises a chalcogenide glass spiral waveguide, and the detector is a PbTe photoconductor integrated directly with the chalcogenide waveguide. The limit of detection of the sensor for methane gas was experimentally assessed to be 1% by volume. Further optimization of the fabrication process and normalization of the laser power fluctuations should result in a maximum sensitivity of 330 ppmv.

Research Organization:
Univ. of Delaware, Newark, DE (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA), Office of Defense Nuclear Nonproliferation (NA-20); National Science Foundation (NSF)
Grant/Contract Number:
NA0002509
OSTI ID:
1614526
Journal Information:
Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 5 Vol. 114; ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English

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Cited By (7)

Towards Integrated Mid-Infrared Gas Sensors journal May 2019
Leveraging of MEMS Technologies for Optical Metamaterials Applications journal July 2019
Mixing Properties of Room Temperature Patch‐Antenna Receivers in a Mid‐Infrared (λ ≈ 9 µm) Heterodyne System journal December 2019
Nanoporous network SnO2 constructed with ultra-small nanoparticles for methane gas sensor journal July 2019
Opportunities for photonic integrated circuits in optical gas sensors journal January 2020
Reverse-strip-structure Ge 28 Sb 12 Se 60 chalcogenide glass waveguides prepared by micro-trench filling and lift-off journal December 2019
Thermal annealing study of the mid-infrared aluminum nitride on insulator (AlNOI) photonics platform journal January 2019

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