[ThE1] Free Space Optics and Emission Control

[ThE1-3] Characterization of Spatial-Mode Demultiplexer using 1550-nm-band Angularly Multiplexed Volume Holograms

〇Satoshi Shinada¹, Taijun Shiba², Tomohiro Maeda², Taketoshi Takahata³, Atsushi Okamoto², Naoya Wada¹ (¹National Institute of Information and Communications Technology, Japan, ²Hokkaido Univ., Japan, ³OPTOQUEST Co., Ltd., Japan)

キーワード：Multiplexing and demultiplexing techniques including OTDM, OFDM, OCDM and SDM

We fabricate and characterize a spatial-mode demultiplexer using 1550-nm-band, 5-mode angularly multiplexed volume holograms. It is confirmed that a degradation of diffraction efficiencies by increasing the number of recorded modes are small.