Please let me know the advantages and disadvantages of using these methods for tuning filter response:
1-electrooptic kerr effect (DC Kerr) : changing refractive index by applied electric field
2-optic kerr effect(AC Kerr or nonlinear effect): changing index by light intensity
3- loop mirror(sagnac effect): changing coupling coefficient of coupler by applied electric field
Also, if anyone know a better way for tuning the ring based filter response , please Proposed to be discussed.
thanks so much...