Share Email Print
cover

Proceedings Paper

Integrated optical bypass-exchange switch in a single block of LiNbO3 crystal
Author(s): Zhe Song; Liren Liu; Haixia Ren; Yu Zhou; Juan Zhang
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

Compact, low operating voltage, high-speed bypass-exchange switches are major elements in optical interconnection networks. Conventionally, a bypass-exchange switch consists of a controllable half-wave plate sandwiched between two polarizing beam displacers. In this paper, an integrated optical bypass-exchange switch is designed in a single block of LiNbO3 crystal. The switch is polarization based and consists of only one birefringent crystal slab with electro-optic property. Based on both the phenomena of double refraction and internally double reflection, and the electro-optic effect in a crystal, an electro-optic modulator, a beam combiner and a beam splitter are integrated in a single block of LiNbO3 crystal. The polarization states of the two input signals are both linear and perpendicular to each other. First the two signal beams are combined into a single channel with two orthogonal polarization directions by double refraction and internally double reflection. The signal couple propagates along the optical axis of the crystal. When a half-wave voltage is applied on the direction normal to the incident plane, the polarization directions of the two beams in a single channel will be exchanged. Last the signal couple is divided separately with the same deflection as that of the two input beams by double refraction and internally double reflection again. The experimental results show that the switch is low operating voltage, low cross talk, low energy loss, fast-speed, and insensitive to environment disturbance. The switch may be applied to the nodes of various multistage interconnection networks.

Paper Details

Date Published: 12 December 2003
PDF: 9 pages
Proc. SPIE 5201, Photonic Devices and Algorithms for Computing V, (12 December 2003); doi: 10.1117/12.503956
Show Author Affiliations
Zhe Song, Shanghai Institute of Optics and Fine Mechanics (China)
Liren Liu, Shanghai Institute of Optics and Fine Mechanics (China)
Haixia Ren, Shanghai Institute of Optics and Fine Mechanics (China)
Yu Zhou, Shanghai Institute of Optics and Fine Mechanics (China)
Juan Zhang, Shanghai Institute of Optics and Fine Mechanics (China)


Published in SPIE Proceedings Vol. 5201:
Photonic Devices and Algorithms for Computing V
Khan M. Iftekharuddin; Abdul Ahad S. Awwal, Editor(s)

© SPIE. Terms of Use
Back to Top