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Multi‐Object Silicon Photonic Spectrometer.
- Source :
-
Laser & Photonics Reviews . Aug2024, p1. 10p. 8 Illustrations. - Publication Year :
- 2024
-
Abstract
- A multi‐object silicon photonic spectrometer with N input ports is proposed and realized by integrating a multi‐channel passband optical filter (POF), a tunable narrow‐band optical filter as well as a calibration‐free N × 1 Mach–Zehnder switch (MZS) array. Here, the multi‐channel POF consisting of a multimode waveguide grating (MWG) and a mode (de)multiplexer is used to achieve a broadened working window and an enhanced dynamic range for the present spectrometer, while the narrow‐band optical filter is realized with a thermally‐tunable Euler micro‐ring resonator (EMR) for achieving a very high spectral resolution. The introduction of the N × 1 MZS enables the time‐division‐multiplexed (TDM) spectrum analysis for multiple objects. In this paper, a multi‐object silicon photonic spectrometer with 16 input ports is demonstrated with an on‐chip loss of less than 3 dB and inter‐channel crosstalk as low as −25 dB. This multi‐object spectrometer can be used to analyze the spectra of 16 objects one by one by setting the 16 × 1 MZS, the resolution is as high as 50 pm, and the working window is ≈84 nm. [ABSTRACT FROM AUTHOR]
- Subjects :
- *SPECTRUM analysis
*SPECTROMETERS
*PHOTONICS
*RESONATORS
*SILICON
Subjects
Details
- Language :
- English
- ISSN :
- 18638880
- Database :
- Academic Search Index
- Journal :
- Laser & Photonics Reviews
- Publication Type :
- Academic Journal
- Accession number :
- 179102155
- Full Text :
- https://doi.org/10.1002/lpor.202400671