Jia, D;
Yun, F;
Wang, R;
Zhang, H;
Xu, T;
Liu, T;
(2019)
High-efficiency off-axis coupling of rotating optical signals based on internal conical reflection.
Optical Fiber Technology
, 50
pp. 76-81.
10.1016/j.yofte.2019.02.009.
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Abstract
We propose an off-axis coupling method for rotating optical signals based on the internal conical reflection. An analytic model of off-axis coupling is developed and verified via simulation and experiment. According to theoretical analysis, the coupling efficiency depends on both the reflectivity of, and the number of reflections between, the conical and the circular plane mirrors. When the reflectivity of the conical and the circular plane mirrors are both constant, i.e. n = 0.973, the coupling efficiency is decreased with an increase in number of reflections. Experimental results show good agreement with theoretical predictions. In addition, our experiment demonstrates that the proposed method can achieve a multi-channel signal coupling with a maximum insertion loss of 1.62 dB in channel T1 and 0.98 dB in channel T2.
| Type: | Article |
|---|---|
| Title: | High-efficiency off-axis coupling of rotating optical signals based on internal conical reflection |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.yofte.2019.02.009 |
| Publisher version: | https://doi.org/10.1016/j.yofte.2019.02.009 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Optical fiber component, Off-axis coupling, Rotating optical signal, Internal conical reflection |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10070506 |
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