作者
Tiehui Su, Ryan P Scott, Stevan S Djordjevic, Nicolas K Fontaine, David J Geisler, Xinran Cai, SJB Yoo
发表日期
2012/4/23
期刊
Optics express
卷号
20
期号
9
页码范围
9396-9402
出版商
Optica Publishing Group
简介
We propose and demonstrate silicon photonic integrated circuits (PICs) for free-space spatial-division-multiplexing (SDM) optical transmission with multiplexed orbital angular momentum (OAM) states over a topological charge range of −2 to +2. The silicon PIC fabricated using a CMOS-compatible process exploits tunable-phase arrayed waveguides with vertical grating couplers to achieve space division multiplexing and demultiplexing. The experimental results utilizing two silicon PICs achieve SDM mux/demux bit-error-rate performance for 1‑b/s/Hz, 10-Gb/s binary phase shifted keying (BPSK) data and 2-b/s/Hz, 20-Gb/s quadrature phase shifted keying (QPSK) data for individual and two simultaneous OAM states.
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T Su, RP Scott, SS Djordjevic, NK Fontaine, DJ Geisler… - Optics express, 2012