Title :
Synthesis of multiple-ring-resonator filters for optical systems
Author :
Orta, R. ; Savi, P. ; Tascone, R. ; Trinchero, D.
Author_Institution :
Dipartimento di Elettronica, Politecnico di Torino, Italy
Abstract :
A method for the synthesis of optical filters consisting of a cascade of N-coupled rings is presented. The procedure is based on the definition of a polynomial whose roots are the zeros of the channel-dropping transmittance characteristic and provides directly the ring electrical lengths and the mutual coupling coefficients. A design example of a Chebyshev-type 6-ring bandpass filter is presented.
Keywords :
band-pass filters; optical communication equipment; optical design techniques; optical fibre couplers; optical fibre filters; optical resonators; polynomials; Chebyshev-type 6-ring bandpass filter; N-coupled ring cascades; channel-dropping transmittance characteristic; design example; multiple-ring-resonator filter synthesis; mutual coupling coefficients; optical fiber filters; optical fiber resonators; optical systems; polynomial; ring electrical lengths; Band pass filters; Digital filters; Directional couplers; Finite impulse response filter; IIR filters; Optical filters; Optical ring resonators; Polynomials; Symmetric matrices; Transmission line matrix methods;
Journal_Title :
Photonics Technology Letters, IEEE
