Design of a compact and ultrahigh-resolution Fourier-transform spectrometer.
| Autor: | Akca BI |
|---|---|
| Jazyk: | angličtina |
| Zdroj: | Optics express [Opt Express] 2017 Jan 23; Vol. 25 (2), pp. 1487-1494. |
| DOI: | 10.1364/OE.25.001487 |
| Abstrakt: | In this work, a compact and ultrahigh-resolution Fourier-transform spectrometer design is presented which is in great demand in numerous areas. The spectrometer is formed by sequentially-activated 60 Mach-Zehnder interferometers that are connected to photodetectors through very-low-loss beam combiners based on two-mode interference. The long optical delays are provided by tapping the propagating light out at certain locations on the optical waveguides by using electro-optically-controlled directional couplers. A design example with a spectral resolution of 500 MHz (~1 pm) and bandwidth of 15 GHz is presented for a device size of only 2 cm × 0.5 cm (1 cm 2 ). |
| Databáze: | MEDLINE |
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