We present the Vernier optical fiber Shape-8 double-ring resonator consisting of two optical fibre rings with a gain coupling cofficent path connecting the two rings. One of the ring is twisted to form an enclosed Shape-8. Photonic graphical techniques are applied to obtain the transfer functions between input and output ports of the photonic circuit. The Shape-8 Vernier Double Ring optical res...

We experimentally demonstrate a high resolution integrated spectrometer on silicon on insulator (SOI) substrate using a large-scale array of microdonut resonators. Through top-view imaging and processing, the measured spectral response of the spectrometer shows a linewidth of ~0.6 nm with an operating bandwidth of ~50 nm. This high resolution and bandwidth is achieved in a compact size using mi...

The contributions of inter-valence band (IVB) transitions to the dielectric function (DF) by free holes among the split-off (so), light-hole (lh) and heavy-hole (hh) bands were investigated. A model was developed to determine the DF of two p-type semiconductors, GaAs and Ge1 ySny with the Zinc-blend and Diamond crystal structures, respectively. The IVB transitions dominate the spectral range be...

Wide free spectral range (FSR) optical filters are very much essential for modern commercial Dense Wavelength Division Multiplexing(DWDM) technique.Performance of a serially coupled integrated optic triple ring resonator (TRR) which can be used as optical filter has been investigated in this article. Delay line signal processing and Mason’s rule have been used to analyze the TRR architecture. F...

A 1 by 4 wavelength division multiplexer with 0.5nm bandwidth and no free spectral range limitation is demonstrated on silicon. The device utilizes wide bandwidth filters cascaded with ring resonators in order to select specific ring resonator modes and route each resonant mode to a separate port. This technology will enable dense wavelength division multiplexing covering the C - and L - bands ...