Microring resonators with circular element inner-wall gratings for enhanced sensing

Petruškevičius, Raimondas; Balčytis, Armandas; Urbonas, Darius; Vaškevičius, Konstantinas; Juodkazis, Saulius

doi:10.35848/1347-4065/ab9232

Cited by 7 publications

(3 citation statements)

References 32 publications

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“…The spectral response of the device is calculated using the scattering matrix method [7,9]. In the device model, we use waveguide group index of ng = 4.3350 (transverse electric (TE) mode) and propagation loss of α = 55 m -1 (i.e., 2.4 dB/cm), which are in line with our previously fabricated siliconon-insulator (SOI) devices [7,8,12]. The device is designed based on, but not limited to, the SOI platform.…”

Section: Device Configurationmentioning

confidence: 99%

Photonic nanowires and waveguides for spectral shaping with Sagnac loop reflectors

Moss¹

2022

Preprint

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<p>We propose and theoretically investigate integrated photonic filters based on two coupled Sagnac loop reflectors (SLRs) formed by a self-coupled optical waveguide. Recently we investigated integrated photonic filters based on cascaded SLRs and coupled SLRs. Here, we advance this field by presenting a unique approach of using coupled SLRs formed by a self-coupled optical waveguide. This enables us to achieve high performance filter functions including Fano-like resonances and wavelength interleaving with a simpler design and a higher fabrication tolerance by tailoring coherent mode interference in the device. Our design takes into account the device fabrication issues as well as the requirements for practical applications. As a guide for practical device fabrication, an analysis of the impact of the structural parameters and fabrication tolerance on each filter function is also provided. The Fano-like resonances show a low insertion loss (IL) of 1.1 dB, a high extinction ratio of 30.2 dB, and a high slope rate (SR) of 747.64 dB/nm. The combination of low IL and high SR promises this device for Fano resonance applications. Our device also can achieve wavelength de-interleaving function with high fabrication tolerance which is attractive for optical interleavers that need a flat-top symmetric filter shape. Optical interleavers and de-interleavers are core elements for signal multiplexing and demultiplexing in wavelength division multiplexing optical communication systems. Versatile spectral responses with a simple design, compact device footprint, and high fabrication tolerance make this approach highly promising for flexible response shaping in a wide variety of applications.</p>

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Section: Device Configurationmentioning

confidence: 99%

Photonic nanowires and waveguides for spectral shaping with Sagnac loop reflectors

Moss¹

2022

Preprint

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“…The spectral response of the device is calculated using the scattering matrix method [7,9]. In the device model, we use waveguide group index of n g = 4.3350 (transverse electric (TE) mode) and propagation loss of α = 55 m -1 (i.e., 2.4 dB/cm), which are in line with our previously fabricated siliconon-insulator (SOI) devices [7,8,12]. The device is designed based on, but not limited to, the SOI platform.…”

Section: Device Configurationmentioning

confidence: 99%

Silicon nanophotonic circuits using Sagnac loop reflectors for optical spectral filters

Moss¹

2022

Preprint

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We present and investigate theoretically photonic integrated filters based on 2 Sagnac coupled loop reflectors (SLRs) that are arranged in a self-coupled optical waveguide. We recently presented photonic integrated filters based on coupled and cascaded SLRs. In this paper, we advance this field by investigating a unique approach of employing coupled SLRs formed by self-coupled waveguides. This allows us to achieve high performance filter functions including Fano-like resonances and wavelength interleaving with a simpler design and a higher fabrication tolerance by tailoring coherent mode interference in the device. Our design takes into account the device fabrication issues as well as the requirements for practical applications. As a guide for practical device fabrication, an analysis of the impact of the structural parameters and fabrication tolerance on each filter function is also provided. The Fano-like resonances show a low insertion loss (IL) of 1.1 dB, a high extinction ratio of 30.2 dB, and a high slope rate (SR) of 747.64 dB/nm. The combination of low IL and high SR promises this device for Fano resonance applications. Our device also can achieve wavelength de-interleaving function with high fabrication tolerance which is advantageous for applications such as optical interleavers that require a symmetric flat-top filter shape. Optical de-interleavers and interleavers are key components for optical signal multiplexing and demultiplexing for wavelength division multiplexing optical communication systems. Versatile spectral responses with a simple design, compact device footprint, and high fabrication tolerance make this approach highly promising for flexible response shaping for many applications.

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“…The Silicon On Insulator SOI(Silicon On Insulator) is a kind of multi-layer artificial material, compatible with mature complementary metal-oxide-semiconductor (CMOS) technology. The made device has a compact structure which can effectively reduce the size of the device [1,2]. Therefore, the device structure based on SOI platform has become a research hotspot in the field of silicon-based photonic integration and optoelectronic integration.…”

Section: Introductionmentioning

confidence: 99%

Sensing Characteristics of a Three-Ring Grating Slit Micro Ring Resonator

Zhu,

Liang

2023

J. Phys.: Conf. Ser.

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In this paper, a micro ring resonator with slit structure of three-ring grating is proposed to make the refractive index micro ring sensor have higher quality factor and sensitivity. Based on the traditional micro ring resonator, the structure adopts three micro rings and adds grating structure to the rings, which can realize the EIT-Like effect at different wavelengths. Furthermore, the quality factor and sensitivity of the micro ring resonator are improved. The structure is simulated using the finite difference time-domain (FDTD) technique and the influence of device parameters on the structure is investigated. Quality factor was found to be up to 24845, over threefold higher than conventional microring sensors. The sensitivity is 224.2nm/RIU, more than two times higher than the conventional micro ring refractive index.

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Microring resonators with circular element inner-wall gratings for enhanced sensing

Cited by 7 publications

References 32 publications

Photonic nanowires and waveguides for spectral shaping with Sagnac loop reflectors

Photonic nanowires and waveguides for spectral shaping with Sagnac loop reflectors

Silicon nanophotonic circuits using Sagnac loop reflectors for optical spectral filters

Sensing Characteristics of a Three-Ring Grating Slit Micro Ring Resonator

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