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pro vyhledávání: '"K. Jinguji"'
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Autor:
K. Jinguji, M. Oguma
Publikováno v:
Journal of Lightwave Technology. 18:252-259
This paper proposes two kinds of novel 2/spl times/2 circuit configuration for finite-impulse response (FIR) half-band filters. These configurations can be transformed into each other by a symmetric transformation and their power transmittance is ide
Publikováno v:
IEEE Journal of Selected Topics in Quantum Electronics. 2:270-276
The authors report, in detail, an integrated-optic variable group-delay dispersion equalizer based on a lattice-form programmable optical filter. The variable dispersion equalizer consists of an alternating cascade of symmetrical and asymmetrical Mac
Publikováno v:
Journal of Lightwave Technology. 14:2301-2310
Wavelength circuit characteristics are investigated systematically for a family of two-port optical wavelength circuits composed of cascaded Mach-Zehnder interferometers (MZIs) with point-symmetrical configurations. A novel design method is presented
Autor:
K. Jinguji
Publikováno v:
Journal of Lightwave Technology. 14:1882-1898
A method has already been reported by the author and others for synthesizing coherent two-port lattice-form optical delay-line circuits which have the same filter characteristics as finite impulse response (FIR) digital filters. This paper proposes a
Autor:
K. Jinguji, M. Kawachi
Publikováno v:
Journal of Lightwave Technology. 13:73-82
A method is presented for synthesizing a coherent two-port lattice-form optical delay-line circuit that is composed of optical delay lines, directional couplers, and phase shifters. The two bases of the method are the use of a unimodulus para-unitary
Publikováno v:
Journal of Lightwave Technology. 12:625-633
A novel polarization-beam splitter/switch with a Mach-Zehnder interferometer configuration was fabricated using a silica-based planar lightwave circuit (PLC) on a silicon substrate. The polarization-beam splitter/switch was realized by accurately con
Publikováno v:
Journal of Lightwave Technology. 10:1814-1824
The authors propose new wavelength-insensitive directional couplers (WINCs) with series-tapered waveguides in the coupling region. The wavelength-insensitive characteristics are investigated with respect to the geometric symmetry of the series-tapere
Publikováno v:
Journal of Lightwave Technology. 10:735-746
The wavelength dependence of waveguide-type directional couplers is investigated with respect to waveguide pattern symmetry in the coupling region. A rough approximation of the dependence is determined based on simplified transfer matrix multiplicati
Publikováno v:
IEEE Journal of Quantum Electronics. 28:848-855
Waveguide-type directional couplers with different guide widths in the interactive region are designed and fabricated with silica-based waveguides on silicon substrates. It is demonstrated that these asymmetric couplers have broadband coupling-ratios