ABSTRACT
For the add/drop optical filter design, the effective mode core areas range from 0.10 µm2 to 0.50 µm2 and the parameters were obtained by using the related practical material parameters (InGaAsP/InP) [21]. When a dark soliton pulse is input and propagated within an add/drop optical filter as shown in Fig. 4.1, a resonant output is formed. The resonator output fields, Et1 and E1, consist of transmitted and circulated components of the add/drop optical filter system, which can act as driving forces for a photon/molecule/atom. For the first coupler of the add/drop optical filter system, the transmitted and circulated components can be written as t1 1 1 i1 1 41 1E E j E g k k (4.3) 1 1 1 4 1 i11 1E E j E g k k (4.4) n2 2 22 0 1 L LjkE E E e a (4.5) Here k1 is the intensity coupling coefficient, g1 the fractional coupler-intensity loss, a the attenuation coefficient, kn = 2p/l the wave propagation number, l the input wavelength light field, and L = 2pRad, where Rad is the radius of the add/drop device.
