Back to Search
Start Over
GeAsSeTe/GeAsSe Pedestal Waveguides for Long-Wave Infrared Tunable on-Chip Spectroscopy.
- Source :
- Photonics; Mar2024, Vol. 11 Issue 3, p201, 7p
- Publication Year :
- 2024
-
Abstract
- A dry-etched pedestal chalcogenide waveguide platform, designed for use in long-wave IR spectrometer applications, is demonstrated, fabricated and optically characterized. The optical layers were deposited on pre-patterned dry-etched silicon pedestals. An exceptionally low waveguide propagation loss was measured, at around 0.1 dB/cm at λ = 10 μm. The modal thermo-optic coefficient of the waveguide was experimentally estimated to be approximately 1.1 × 10<superscript>−4</superscript> C<superscript>−1</superscript> at λ = 1.63 μm, which is comparable to that of Si and GaAs. Waveguide spiral interferometers were fabricated, proving the potential for realization of more complex, chalcogenide-based, integrated photonic circuits. The combination of low propagation losses and a strong thermo-optic coefficient makes this platform an ideal candidate for utilization in on-chip tunable spectrometers in the long-wave IR wavelength band. [ABSTRACT FROM AUTHOR]
- Subjects :
- PEDESTALS
IR spectrometers
SPECTROMETRY
INTERFEROMETERS
AUDITING standards
WAVEGUIDES
Subjects
Details
- Language :
- English
- ISSN :
- 23046732
- Volume :
- 11
- Issue :
- 3
- Database :
- Complementary Index
- Journal :
- Photonics
- Publication Type :
- Academic Journal
- Accession number :
- 176367992
- Full Text :
- https://doi.org/10.3390/photonics11030201