Modulational instability in fiber Bragg gratings with nonlinearity management

Wangyang Cai; Shuangchun Wen; Jianguo Wen

doi:10.1117/12.635781

5 December 2005 Modulational instability in fiber Bragg gratings with nonlinearity management

Wangyang Cai, Shuangchun Wen, Jianguo Wen

Proceedings Volume 6019, Passive Components and Fiber-based Devices II; 60190S (2005) https://doi.org/10.1117/12.635781
Event: Asia-Pacific Optical Communications, 2005, Shanghai, China

Abstract

We study modulation instability (MI) in the fiber Bragg grating with nonlinearity management based on the coupled-mode theory. The role of both average Kerr nonlinearity and variance of Kerr nonlinearity between the layers of fiber grating in MI is identified. It is found that the variance of Kerr nonlinearity affect MI gain spectrum remarkably in both anomalous dispersion and normal dispersion regimes. In the anomalous dispersion regime, when the variance of Kerr nonlinearity is much smaller than the average Kerr nonlinearity, the MI gain spectrum is similar to that without the variance of Kerr nonlinearity, but the range of wave number for MI to occur is narrowed, and the amplitude of gain decreased. When the variance of Kerr nonlinearity is enhanced to be equivalent to the average Kerr nonlinearity, the role of variance of Kerr nonlinearity in MI becomes important: At low intensity, the range of wave number for MI to occur shrinks notably, and the gain gets only a single peak compared with the original one which has two symmetrical side-bands. At high intensity, there appear three MI ranges. In the normal dispersion regime, near the lower edge of photonic band gap, the amplitude of MI gain is slowed down due to the influence of variance of Kerr nonlinearity, and only two small symmetrical MI range appear, in sharp contrast to the original case without the influence of variance of Kerr nonlinearity, in which MI occurs for all wave numbers. Whereas in the case that far away from the edge of photonic band gap, we find that the range of wave number for MI to occur and the amplitude of MI gain increase as the value of variance of Kerr nonlinearity increases.

Citation Download Citation

Wangyang Cai, Shuangchun Wen, and Jianguo Wen "Modulational instability in fiber Bragg gratings with nonlinearity management", Proc. SPIE 6019, Passive Components and Fiber-based Devices II, 60190S (5 December 2005); https://doi.org/10.1117/12.635781

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
8 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Dispersion

Modulation

Fiber Bragg gratings

Nanoimprint lithography

Wave propagation

Astatine

Structured optical fibers

Show All Keywords

Keywords/Phrases

Search In:

Publication Years