BROAD-BAND HIGH-SILICA OPTICAL WAVE-GUIDE STAR COUPLER WITH ASYMMETRIC DIRECTIONAL-COUPLERS

被引：12

作者：

YANAGAWA, H

NAKAMURA, S

OHYAMA, I

UEKI, K

机构：

[1] Opto-Technology Laboratory, Furukawa Electric Company, Ltd., Yawata-Kaigandori, Ichihara, Chiba

来源：

JOURNAL OF LIGHTWAVE TECHNOLOGY | 1990年 / 8卷 / 09期

关键词：

D O I：

10.1109/50.59155

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A broad-band optical waveguide star coupler with asymmetric directional couplers is proposed. A coupling or splitting ratio of the coupler is flattened with respect to wavelength by choosing appropriate values for Δ β and complete power transfer length. Uniform and alternating Δ β directional couplers are investigated theoretically and experimentally. A fabricated 8×8 star coupler exhibited 2-dB loss variation in the wavelength range of 1.3–1.55 µm, and this value was almost one fourth of that of a star coupler composed of symmetric directional couplers. © 1990 IEEE

引用

页码：1292 / 1297

页数：6

共 17 条

[1] LIGHT-PROPAGATION IN GRADED-INDEX OPTICAL FIBERS [J].