in this note we introduce the notion of weak mccoy rings as a generalization of mccoy rings, and investigate their properties. also we show that, if is a semi-commutative ring, then is weak mccoy if and only if is weak mccoy.

A low-crosstalk compact arrayed waveguide grating integrated with a tunable micro-ring resonator is demonstrated on silicon-on-insulator platform, The side-lobe of the silicon nanowire AWG, introduced by fabrication errors, can be effectively suppressed Ring Filter, crosstalk level reduced from -16.3 dB to -26.8dB, in addition, integrate AWG have improved over entire 3 bandwidth, maximum improv...

Abstract—We propose new multiple-channel piezoelectric (PZT) actuated tunable optical filter based on racetrack multi-ring resonators for wavelength de-multiplexing network applications. We design tunable eight-channel wavelength de-multiplexer consisting of eight cascaded PZT actuated tunable multi-ring resonator filter with a channel spacing of 1.6nm. The filter for each channel is basically ...

We demonstrate optical 2R regeneration in an integrated silicon device consisting of an 8-mm-long nanowaveguide followed by a ring-resonator bandpass filter. The regeneration process is based on nonlinear spectral broadening in the waveguide and subsequent spectral filtering through the ring resonator. We measure the nonlinear power transfer function for the device and find an operating peak po...

A novel reconfigurable microstrip Bandpass filter (BPF) for centre frequency (fc) 3.5 GHz is proposed in this paper. A Square ring microstrip structure with gap coupled feed has been used. A new comb-tooth structure is proposed, where combination of tooth connection is responsible for the variation of bandwidth, this scheme has been used to achieve a fractional bandwidth (FBW) variation of 0.85...