Optical Gaussian Notch Filter Based on Periodic Microbent Fiber Bragg Grating
Document Type
Article
Publication Date
2-1-2014
Abstract
In this paper, we demonstrated an optical notch filter constructed from a periodic microbent fiber Bragg grating attained by using two copper-wire-wound slabs. In the reflection spectrum, sideband peaks are created as a result of mechanically induced modulation on the grating period, and a higher number of peaks are observed when greater modulation is applied. The peak wavelength spacing depends upon the period of microbending, which can be varied by changing the diameter of the winding wire or the angle of placement of fiber Bragg grating placed in between the two wound slabs. Moreover, the trend of Bragg transmission loss (BTL) for the transmission spectrum changes with the changing of modulation period and amplitude. The proposed technique is very stable, and it can be used as an optical Gaussian notch filter.
Keywords
Refractive index modulation, Periodic microbending, Bragg wavelength, Bragg transmission loss
Divisions
PHYSICS
Publication Title
IEEE Photonics Journal
Volume
6
Issue
1
Publisher
Institute of Electrical and Electronics Engineers (IEEE)