TY - GEN N1 - Optica Applicata, Vol. 39, 2009, nr 2, s. 277-286 N2 - This paper describes group delay time property of the multi-stage ring resonator all-pass filters (RRAPF) in either cascading single stages or using lattice architectures. The present analysis is restricted to directional couplers and waveguides characterized by various parameters, and careful design of these parameters can optimize the group delay response. The extra phase shifters of each single stage have been adjusted to yield a broadband group delay. By increasing the number of filter stages, a larger bandwidth over the dispersion can be obtained. This device is able to provide dispersion compensation to systems such as the high speed dense wavelength division multiplexer (DWDM) for the optical fiber communication system. L1 - http://dbc.wroc.pl/Content/59035/optappl_3902p277.pdf M3 - artykuł L2 - http://dbc.wroc.pl/Content/59035 PY - 2009 KW - optyka KW - ring resonator KW - all-pass filter KW - group delay KW - quadratic dispersion C1 - Wszystkie prawa zastrzeżone (Copyright) A1 - Chaichuay, Chinda A1 - Yupapin, Preecha P. A1 - Saeung, Prajak A2 - Gaj, Miron. Redakcja A2 - Urbańczyk, Wacław. Redakcja PB - Oficyna Wydawnicza Politechniki Wrocławskiej C6 - Dla wszystkich w zakresie dozwolonego użytku LA - eng CY - Wrocław T1 - Multi-stage ring resonator all-pass filters for dispersion compensation UR - http://dbc.wroc.pl/dlibra/publication/edition/59035 ER - TY - GEN N1 - Optica Applicata, Vol. 39, 2009, nr 1, s. 175-194 N2 - The general characteristics of serially coupled multiple ring resonator (SMRR) filters are analyzed. In this case, the ring resonators of the SMRR have identical perimeters and the coupling coefficients distribution provides passband characteristics with steeper roll-off, flatter top and greater stopband rejection than a single ring resonator. In addition, we have also designed and simulated a nonsymmetric Vernier type of SMRR filters for improving a wide free spectral range (FSR) with different ring radii. To expand the FSR of the SMRR, Vernier filters are determined by the least common multiple of the FSR of individual ring resonators. The improvement in suppression of interstitial resonances is also investigated. A novel derivation of the optical transfer functions in Z-domain of SMRR filters is expressed employing a graphical approach to ring resonators with unequal perimeters that can be represented in signal flow graph diagrams. L1 - http://dbc.wroc.pl/Content/58768/optappl_3901p175.pdf M3 - artykuł L2 - http://dbc.wroc.pl/Content/58768 PY - 2009 KW - optyka KW - optical filter KW - bandpass filter KW - optical ring resonator C1 - Wszystkie prawa zastrzeżone (Copyright) A1 - Chaichuay, Chinda A1 - Yupapin, Preecha P. A1 - Saeung, Prajak A2 - Gaj, Miron. Redakcja A2 - Urbańczyk, Wacław. Redakcja PB - Oficyna Wydawnicza Politechniki Wrocławskiej C6 - Dla wszystkich w zakresie dozwolonego użytku LA - eng CY - Wrocław T1 - The serially coupled multiple ring resonator filters and Vernier effect UR - http://dbc.wroc.pl/dlibra/publication/edition/58768 ER - TY - GEN N1 - Optica Applicata, Vol. 46, 2016, nr 4, s. 553-564 L1 - http://dbc.wroc.pl/Content/37817/PDF/optappl_4604p553.pdf M3 - artykuł L2 - http://dbc.wroc.pl/Content/37817 PY - 2016 KW - optyka KW - photonic crystal KW - photonic band gap KW - shell-type ring resonator KW - quality factor KW - crosstalk C1 - Wszystkie prawa zastrzeżone (Copyright) A1 - Talebzadeh, Reza A1 - Soroosh, Mohammad A1 - Mehdizadeh, Farhad A2 - Urbańczyk, Wacław. Redakcja PB - Oficyna Wydawnicza Politechniki Wrocławskiej C6 - Dla wszystkich w zakresie dozwolonego użytku LA - eng CY - Wrocław ID - DOI: 10.5277/oa160404 T1 - Improved low channel spacing high quality factor four-channel demultiplexer based on photonic crystal ring resonators UR - http://dbc.wroc.pl/dlibra/publication/edition/37817 ER - TY - GEN N1 - Optica Applicata, Vol. 47, 2017, nr 1, s. 7-18 L1 - http://dbc.wroc.pl/Content/38056/PDF/optappl_4701p7.pdf M3 - artykuł L2 - http://dbc.wroc.pl/Content/38056 PY - 2017 KW - optyka KW - two-dimensional photonic crystal KW - photonic band gap KW - ring resonator KW - waveguide KW - demultiplexer KW - wavelength division multiplexing C1 - Wszystkie prawa zastrzeżone (Copyright) A1 - Kannaiyan, Venkatachalam A1 - Dhamodharan, Sriram Kumar A1 - Savarimuthu, Robinson A2 - Urbańczyk, Wacław. Redakcja PB - Oficyna Wydawnicza Politechniki Wrocławskiej C6 - Dla wszystkich w zakresie dozwolonego użytku LA - eng CY - Wrocław ID - DOI: 10.5277/oa170101 T1 - Performance analysis of two-dimensional photonic crystal octagonal ring resonator based eight channel demultiplexer UR - http://dbc.wroc.pl/dlibra/publication/edition/38056 ER -