Title :
Design Algorithm for Multichannel Interleave Filters
Author :
Jinguji, Kaname ; Yasui, Takashi
Author_Institution :
Shimane Univ., Matsue
Abstract :
A one-input M-output (1timesM) circuit configuration and design algorithm for an interleave filter with M output ports (Mges2) are presented. The circuit configuration is composed of a 1timesM optical lattice filter with a delay time of MDeltatau (Deltatau: unit delay time), an MtimesM diagonal delay matrix circuit, and an MtimesM modified inverse discrete Fourier transform matrix circuit. The proposed circuit with M=2 corresponds to a conventional interleave filter. The proposed synthesis algorithm is based on polyphase decomposition and yields circuit parameters ensuring that every output characteristic has an Mth-band property. A five-channel interleave filter is presented as an example of the design procedure.
Keywords :
Fourier transform optics; delays; integrated optics; optical communication equipment; optical filters; optical information processing; optical lattices; delay time; design algorithm; diagonal delay matrix circuit; interleave filters; inverse discrete Fourier transform matrix circuit; multichannel filters; one-input M-output circuit configuration; optical lattice filter; output ports; polyphase decomposition; Algorithm design and analysis; Arrayed waveguide gratings; Band pass filters; Circuit synthesis; Delay effects; Finite impulse response filter; Optical filters; Optical signal processing; Signal processing algorithms; Signal synthesis; $M$ th band; Finite impulse response (FIR); half-band; interleave filter; interleaver; lattice; polyphase decomposition; synthesis;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2007.901346
