COUPLING COEFFICIENT MODULATION OF WAVE-GUIDE GRATING USING SAMPLED GRAFTING

被引：38

作者：

SHIBATA, Y

TAMAMURA, T

OKU, S

KONDO, Y

机构：

[1] NTT Opto-electronics Laboratories, Kanagawa-ken

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 1994年 / 6卷 / 10期

关键词：

Diffraction gratings - Fourier transforms - Frequency division multiplexing - Interference suppression - Light modulation - Light propagation - Light reflection - Refractive index - Semiconducting indium compounds - Semiconductor device manufacture - Signal filtering and prediction - Spurious signal noise;

D O I：

10.1109/68.329645

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 new method of modulating the coupling coefficient along the waveguide is proposed. The effect of our method, which uses a nonperiodic sampled grating, is demonstrated both theoretically and experimentally. A Bragg filter is fabricated on an InGaAsP/InP wafer utilizing the method, and the sidelobe level is shown to improve by 7 dB compared with a conventional filter with a uniform coupling coefficient. The experimental results are found to be in good agreement with calculations.

引用

页码：1222 / 1224

页数：3

共 6 条

[1]

ISHII H, 1993, IEEE PHOTONIC TECH L, V4, P393

[2] DEMONSTRATION OF BROAD-BAND TUNABILITY IN A SEMICONDUCTOR-LASER USING SAMPLED GRATINGS [J].