Electrical Signal-to-Noise Ratio Enhancement in Detection of Mid-IR Signals by Four-Wave Mixing in As2S3-on-LiNbO3 Waveguides ()
ABSTRACT
Mid-infrared (mid-IR) signals can be converted to near-infrared (near-IR)
wavelengths in As2S3-on-LiNbO3 waveguides by
high efficiency four-wave mixing. It provided us a solution to detect mid-IR
signals indirectly by state-of-the-art near-IR detectors. High efficiency
four-wave mixing was demonstrated and electrical signal-to-noise ratio (eSNR)
improvement was also investigated. Compared to direct detection by PbSe and
HgCdTe (MCT) mid-IR detectors, the calculation indicated that, at room
temperature, the indirect detection to mid-IR signals increased the electrical
signal-to-noise ratio up to 67 dB.
Share and Cite:
Chen, Q. and Madsen, C. (2016) Electrical Signal-to-Noise Ratio Enhancement in Detection of Mid-IR Signals by Four-Wave Mixing in As2S3-on-LiNbO3 Waveguides.
Optics and Photonics Journal,
6, 69-74. doi:
10.4236/opj.2016.65010.
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