Partially Coherent Optical Transmission

Ke, Xizheng; Dong, Ke

doi:10.1007/978-981-19-0382-3_9

Cited by 1 publication

(1 citation statement)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In a coherent optical communication system, if the polarization state of the signal light is uncertain [1], but the optical mixer is sensitive to the polarization state of the signal light and the local polarization light, and the polarization state of the signal light does not match with the local polarization light, it will reduce the heterodyne's efficiency and seriously affect the performance of the whole communication system [2]. In coherent optical communication systems, the generation of intermediate frequency signals relies on an optical mixing process, which is the nonlinear interaction between local oscillator light and signal light in the photodetector.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Partially Coherent Optical Coherent Detection

Liang,

Mu,

et al. 2024

Photonics

View full text Add to dashboard Cite

When coherent detection occurs, the polarization mismatch between signal light and local oscillator light can reduce the efficiency of coherent detection. This article combines the principle of optical mixers to derive the relationship between the polarization state and mixing efficiency of signal light and local oscillator light, and builds an experimental platform for the coherent detection of a partially coherent electromagnetic Gaussian Schell beam (EGSM). Polarization devices are used to regulate the polarization state of the signal EGSM light and local oscillator EGSM light, and different polarization states of the EGSM beams are generated. When the output power of the signal light is constant, the mixing efficiency is measured according to the output amplitude of the intermediate frequency signal. This experiment found that when the signal light is in a linearly polarized state and the local oscillator light is in a linearly polarized state, a circularly polarized state, or an elliptically polarized state, the amplitude of the intermediate frequency signal is 369.6 mv, 146.6 mv, or 92.1 mv, respectively. When the signal light is in a circularly polarized state, the amplitude of the intermediate frequency signal is 446.4 mv, 504.0 mv, or 159.2 mv, respectively. When the signal light is in an elliptical polarization state, the amplitude of the intermediate frequency signal is 94.4 mv, 124.0 mv, or 254.8 mv, respectively.

show abstract

Section: Introductionmentioning

confidence: 99%