Cascaded coupling: Realization and application to spectral maneuvering

被引：7

作者：

Garg, Ruchi ^{[1
]}

Thyagarajan, K. ^{[1
]}

机构：

[1] Indian Inst Technol Delhi, Dept Phys, New Delhi 110016, India

来源：

OPTICAL FIBER TECHNOLOGY | 2013年 / 19卷 / 02期

关键词：

Long period gratings; Fiber optics components; Wavelength filtering devices; Gain flattening; PERIOD FIBER GRATINGS; WAVE-GUIDE; GAUSSIAN-APODIZATION;

D O I：

10.1016/j.yofte.2012.12.005

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：

In this paper, we analyze a scheme of three mode coupling referred to as cascaded coupling in an optical fiber by employing a pair of superimposed long period gratings. In the cascaded coupling process, interaction between two modes takes place via an intermediate mode. We show that cascaded coupling gives us an additional degree of freedom to tune the transmission spectrum to achieve desired spectral features by appropriate choice of grating parameters i.e. grating strength, length and wavelength of operation. Applications of the proposed design to achieve flat wavelength response and gain flattening filters for erbium doped fiber amplifiers are presented. (C) 2012 Elsevier Inc. All rights reserved.

引用

页码：148 / 153

页数：6

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