Over Coupled Ring Resonator-Based Add/Drop Filters

Mansoor, Riyadh; Sasse, Hugh; Asadi, Mohammed Al; Ison, Stephen; Duffy, Alistair

doi:10.1109/jqe.2014.2329645

Cited by 19 publications

(9 citation statements)

References 18 publications

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“…It leads to emergence of the negative values for the crosstalk. The crosstalk larger than 20 dB is desirable for filtering and optical communications [20,22]. As shown in Fig.…”

Section: Lossy Mode Critical Couplingmentioning

confidence: 99%

“…Applying multiple stage resonators can also increase the quality of the output signals and improve the crosstalk between channels [19]. Generally, the crosstalk in optical filters emerges due to the miss match in channel wavelengths [20]. One of the approaches in reducing the mismatch in the channel wavelengths is considering the resonance condition in the ring resonator and its effect on the free spectral range.…”

Section: Introductionmentioning

confidence: 99%

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Double critical coupled ring resonator-based add–drop filters

Bahadoran

Amiri

2019

J Theor Appl Phys

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In this paper, we introduced double-critical coupling condition (DCCC) for lossy mode couplers of the add-drop resonator to achieve the desirable and tunable signals required for optical communication and photonics sensors applications. The performance of add-drop resonator under double-critical condition is simulated and analyzed. Some equations were derived for optical parameters including full width at half maximum (FWHM), the out-of-band rejection ratio (OBRR), quality factor and the crosstalk of the add-drop resonator, and the output signals were examined as a function of DCCC. Based on double-critical condition, the OBRR values larger than 40 dB, the crosstalk larger than 50 dB, highest quality factor of 9000 and the FWHM as small as 0.17 nm were realized in silicon add-drop resonator, which are quite compatible with the reported experimental data. Double-critical condition shows that the lossless coupling is not enough condition to acquire high-quality filtered signal with a large crosstalk and in presence of coupling losses, the DCCC can determine the optimum relation between the strength of coupling coefficients and the coupling losses.Publisher's Note Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

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“…It leads to emergence of the negative values for the crosstalk. The crosstalk larger than 20 dB is desirable for filtering and optical communications [20,22]. As shown in Fig.…”

Section: Lossy Mode Critical Couplingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Double critical coupled ring resonator-based add–drop filters

Bahadoran

Amiri

2019

J Theor Appl Phys

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“…1, is calculated based on the coupled mode theory (in space domain). A similar approach to that of the laterally coupled ring resonator [21] is used.…”

Section: Analytical Modelmentioning

confidence: 99%

Crosstalk suppression bandwidth optimisation of a vertically coupled ring resonator add/drop filter

Mansoor

Koziel

Sasse

et al. 2015

IET Optoelectronics

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In this study, a vertical coupled single ring resonator add/drop filter is simulated and the effect of different design parameters on the crosstalk suppression bandwidth is numerically investigated. Crosstalk suppression is defined as the difference between drop port and through port spectral responses. In a vertically coupled ring resonator, coupling efficiency between the evanescent tails of modes on the bus and bent waveguides is controlled by vertical separation and lateral deviation between waveguides. Designing a small size (single ring) add/drop filter that provides an increased crosstalk suppression bandwidth (to drop 10 Gbps non-return to zero signals) is proposed. As the analytical calculations cannot produce an accurate prediction of the design parameters, a simulation-driven design optimisation procedure is used to determine the values of the design parameters that produce a 21 GHz crosstalk suppression bandwidth.

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“…Thanks to their sharp wavelength selectivity and compact feature size, microring resonators are suitable for numerous optical applications such as filtering [1], lasing [2], modulation [3], routing [4], optical processing [5] and all optical logic gates [6]. The basic layout of a ring resonator consists of a circular waveguide and two tangential straight waveguides serving as evanescent wave input and output couplers to the ring.…”

Section: Introductionmentioning

confidence: 99%

Vertically coupled microring resonators using one epitaxial growth step and single-side lithography

López¹,

Thourhout²,

Lasaosa³

et al. 2015

Opt. Express

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Abstract:A new concept for the fabrication of integrated microring resonators, requiring only one single epitaxial growth and two single-side lithographic steps, is proposed in what is the simplest fabrication scheme for vertical microrings published to date. The approach is based on two vertically stacked phase matched core layers. The effect of bus waveguide, coupling region and ring structure parameters is theoretically analyzed. Numerical calculations predict high performance devices with quality factors of over 10000. The scheme can feature both active and passive regions, allowing the fabrication of microring lasers.

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Over Coupled Ring Resonator-Based Add/Drop Filters

Cited by 19 publications

References 18 publications

Double critical coupled ring resonator-based add–drop filters

Double critical coupled ring resonator-based add–drop filters

Crosstalk suppression bandwidth optimisation of a vertically coupled ring resonator add/drop filter

Vertically coupled microring resonators using one epitaxial growth step and single-side lithography

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