We experimentally demonstrate space-code-division multiple access (space-CDMA) based two-dimensional (2-D) parallel optical interconnections by using image fibers and 8 × 8 vertical-cavity surface-emitting laser (VCSEL)/photo diode (PD) arrays. Two spatially encoded four-bit (2 × 2) parallel optical signals were emitted from 2-D VCSEL arrays and transmitted through image fibers. The encoded signals were multiplexed by an image-fiber coupler and detected by a 2-D PD array on the receiver side. The receiver recovered the intended parallel signal by decoding the signal. The transmission speed was 64 Mbps/ch (total throughput: 512 Mbps). Bit-error-rate (BER) measurement with a laterally misaligned PD array showed the array had a misalignment tolerance of 25 μm for a BER performance of 10<sup>−9</sup>.
© 2002 Optical Society of America
Moriya Nakamura, Ken-ichi Kitayama, Yasunori Igasaki, Naoki Shamoto, and Keiji Kaneda, "Image fiber optic space-CDMA parallel transmission experiment using 8 x 8 VCSEL /PD arrays," Appl. Opt. 41, 6901-6906 (2002)