2021年4月
Spatial mode exchange technique using volume holograms with a random optical diffuser for reduction of crosstalk
OPTICAL REVIEW
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- 巻
- 28
- 号
- 2
- 開始ページ
- 181
- 終了ページ
- 189
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1007/s10043-021-00648-6
- 出版者・発行元
- OPTICAL SOC JAPAN
In mode-division multiplexing systems, the transmission quality is restricted by the differential mode delay (DMD). We previously proposed a spatial mode exchange technique using volume holograms (VHET) to reduce the DMD. VHET can be used for the exchange of multiple spatial modes with different transmission speeds using a single device. However, in VHET, incidents of cross-talk (XT) caused by non-target holograms severely degrade the exchange performance. To address this issue, we propose a spatial mode exchange technique that uses volume holograms in combination with a random optical diffuser. By scattering the intensity distribution of the signal beam uniformly using a random optical diffuser, high exchange performance can be attained due to the reduction in the influence of non-targeted holograms. We confirmed the basic operation of the proposed scheme by considering the crosstalk component coupled to the few-mode fiber in a mode-division multiplexing system. The simulation results show that the maximum XTs are significantly suppressed to - 15.8 dB.
- リンク情報
- ID情報
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- DOI : 10.1007/s10043-021-00648-6
- ISSN : 1340-6000
- eISSN : 1349-9432
- Web of Science ID : WOS:000623940100001