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Fourier-transform, integrated-optic spatial heterodyne spectrometer on a silica-based planar waveguide with 1 GHz
Nicolas K Fontaine1, Katsunari Okamoto, Tiehui Su
1Department of Electrical and Computer Engineering, University of California, One Shields Avenue, Davis, California 95616, USA. nkfontaine@ucdavis.edu
Optics Letters
|August 18, 2011
Summary
We developed a compact planar waveguide spatial heterodyne spectrometer (SHS) using 64 Mach-Zehnder interferometers. This device achieves 1 GHz resolution, enabling high-performance spectral measurements.
Area of Science:
- Optics and Photonics
- Spectroscopy
- Integrated Photonics
Background:
- Spatial heterodyne spectrometers (SHS) offer high spectral resolution and throughput.
- Miniaturization of high-resolution spectrometers is crucial for various applications.
- Integrated photonic devices enable compact and scalable optical systems.
Purpose of the Study:
- To demonstrate a planar waveguide spatial heterodyne spectrometer (SHS).
- To achieve high spectral resolution in a compact, integrated format.
- To verify the performance of the developed SHS device.
Main Methods:
- Fabrication of a planar waveguide SHS device.
- Incorporation of 64 asymmetric Mach-Zehnder interferometers.
- Optical measurements to characterize spectral resolution and range.
Main Results:
- Successful demonstration of a planar waveguide SHS.
- Achieved 1 GHz spectral resolution.
- Verified performance across a 64 GHz measurement range.
Conclusions:
- The planar waveguide SHS is a viable technology for high-resolution spectroscopy.
- The integrated approach offers a compact and scalable solution.
- This work paves the way for advanced integrated spectral sensing applications.
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