Title :
All-optical implementation of tunable low-pass, high-pass, and bandpass optical filters using ring resonators
Author :
Rostami, A. ; Rostami, G.
Author_Institution :
OIC Res. Lab., Tabriz Univ., Iran
Abstract :
Basic units for realization of all-pole and all-zero transfer functions in all-optical systems using ring resonators and electromagnetic-induced transparency (EIT) are introduced. Using the basic blocks for generation of pole and zero proposed Any type and any degree of optical filters and optical processing systems can be implemented. In this paper, z transform is used for design and synthesize of low-pass, bandpass, and high-pass Butterworth optical filters as an example. The stability of optical systems designed by the proposed structures is investigated. In addition, EIT is used for the control of pole and zero position.
Keywords :
Butterworth filters; Z transforms; band-pass filters; high-pass filters; low-pass filters; optical filters; optical resonators; optical tuning; self-induced transparency; transfer functions; Butterworth optical filters; all-pole transfer function; all-zero transfer function; electromagnetic-induced transparency; optical processing systems; ring resonators; tunable bandpass optical filters; tunable high-pass optical filters; tunable low-pass optical filters; z transform; Digital filters; Fiber nonlinear optics; High speed optical techniques; Holography; Nonlinear optics; Optical design; Optical filters; Optical ring resonators; Optical signal processing; Poles and zeros; All-optical systems; electromagnetic-induced transparency (EIT); pole and zero; tunable optical filter;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2004.834829
