This paper reports the first switching network compatible with multimode fibers. A one-to-many cascaded reconfigurable interconnection was built. A thin glass substrate was used as the guiding medium which provides not only higher coupling efficiency from multimode fiber to waveguide but also better tolerance of phase-matching conditions. Involvement of a total-internal-reflection hologram and multimode waveguide eliminates interface problems between fibers and waveguides. The DCG polymer graft has proven to be reliable from -180 C to +200 C. Survivability of such an electrooptic system in harsh environments is further ensured. LiNbO3 was chosen as the E-O material because of its stability at high temperatures (phase-transition temperature of more than 1000 C) and maturity of E-O device technology. Further theoretical calculation was conducted to provide the optimal interaction length and device capacitance.

Date Published: 1 February 1991
PDF: 14 pages
Proc. SPIE 1374, Integrated Optics and Optoelectronics II, (1 February 1991); doi: 10.1117/12.24973

Published in SPIE Proceedings Vol. 1374:
Integrated Optics and Optoelectronics II
Ka Kha Wong, Editor(s)