Fabrication and characterization of high order filter based on resonance in hybrid multi-knots microfiber structure
Document Type
Article
Publication Date
1-1-2016
Abstract
This work proposes a novel design of a hybrid microfiber resonator which can be used as a band-pass and band-stop filter in various applications such as fiber lasers. The structure comprises of two microfiber knot resonators with different sizes which are surrounded by a semi-loop structure with one input and two output ports. Utilization of the Vernier effect in the proposed structure showed an enhancement of the free spectral range (FSR). The finesse has increased by a factor of three compared to a single knot providing a sharper roll-off. The filter bandwidth is adjustable as a result of the manipulation of the coupling length and rings' radii. The performance of the device is explained theoretically using transfer matrix analysis.
Keywords
Microfiber resonator, Band-pass filter, Band-stop filter, Matrix analysis
Divisions
fac_eng,Science
Publication Title
Optics & Laser Technology
Volume
78
Publisher
Elsevier