Nano-optical Switch Based on Photonic Crystal Ring Resonator

Rajasekar, R.; Parameshwari, K.; Robinson, S.

doi:10.1007/s11468-019-00955-4

Cited by 54 publications

(21 citation statements)

References 17 publications

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“…Additional merits are low power consumption, flexibility in structural design, and excellent sensitivity measurement [20]. As a result, today, PhCs are frequently utilized in several ODP technologies, such as resonators [21], couplers [22], channel drop filters [23], optical modulators [24], oscillators [25], switches [26], logic gates [27], adders [28], subtractors [29], encoders [30], and sensors.…”

Section: Introductionmentioning

confidence: 99%

High-Sensitivity Early Detection Biomedical Sensor for Tuberculosis With Low Losses in the Terahertz Regime Based on Photonic Crystal Fiber Technology

et al. 2023

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Tuberculosis is one of the most contagious and lethal illnesses in the world, according to the World Health Organization. Tuberculosis had the leading mortality rate as a result of a single infection, ranking above HIV/AIDS. Early detection is an essential factor in patient treatment and can improve the survival rate. Detection methods should have high mobility, high accuracy, fast detection, and low losses. This work presents a novel biomedical photonic crystal fiber sensor, which can accurately detect and distinguish between the different types of tuberculosis bacteria. The designed sensor detects these types with high relative sensitivity and negligible losses compared to other photonic crystal fiber-based biomedical sensors. The proposed sensor exhibits a relative sensitivity of 90.6%, an effective area of 4.342×10−8m2, with a negligible confinement loss of 3.13×10−9cm−1, a remarkably low effective material loss of 0.0132cm−1, and a numerical aperture of 0.3462. The proposed sensor is capable of operating in the terahertz regimes over a wide range (1 THz–2.4THz). An abbreviated review of non-optical detection techniques is also presented. An in-depth comparison between this work and recent related photonic crystal fiber-based literature is drawn to validate the efficacy and authenticity of the proposed design.

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Section: Introductionmentioning

confidence: 99%

High-Sensitivity Early Detection Biomedical Sensor for Tuberculosis With Low Losses in the Terahertz Regime Based on Photonic Crystal Fiber Technology

et al. 2023

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“…light communications (VLC) [13]- [19], and modulators used in optical networks [20]. Recently, PhC are widely used in several optical data processing applications as: a resonator [21], [22], coupler [23], channel drop filters [24], [25], optical modulators [26], oscillators [27], switches [28], logic gates [29]- [31], adders [32], [33], subtractors [34], [35], encoders [36], and sensors.…”

Section: Introductionmentioning

confidence: 99%

Literature Review: On-Chip Photonic Crystals and Photonic Crystal Fiber for Biosensing and Some Novel Trends

et al. 2022

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This review summarizes recent advances in sensors based on photonic crystal technologies for biomedical sensing applications. Photonic crystal sensing offers enormous promise due to their clear benefits in sensitivity, stability, compactness, portability. This work discusses several photonic crystal structures, such as photonic crystal waveguides, cavities, and photonic crystal fiber for biomedical sensing applications. The uniqueness, measurement technique, and biosensing properties of each type of these structures are discussed. Furthermore, manufacturing and functionally relevant properties that include design simplicity, compactness, and multi-wavelength operation are also reviewed. They are explored, organized, and compared using the most recent related literature in this field. Finally, a brief of novel trends has been introduced.INDEX TERMS Biomedical sensors, photonic crystals, photonic crystal fiber.

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“…On the other hand, the extraction of applications based on photonic crystal is very attractive and is used in the design of new compact digital devices such as all optical memories [8,9], optical hard drives [10], all-optical programmable logic array (PLA) [11]. All Optical encoders [12][13][14], along with the other devices including logic gates [5,[14][15][16] lters [17,18], switches [19][20][21] and multiplexers [22,23] constitute a signi cant part of optical communication systems.…”

Section: Introductionmentioning

confidence: 99%

“…According to the study of the mentioned papers, it is concluded that using an encoder based on a photonic crystal, can be overcome the speed limitations on any signal conversion [29,30]. One way to improve the light trapping in these structures is to use ring resonators [20,31]. When all-optical devices should be used in the next generation of optical integrated circuits, it is important to reduce their dimensions.…”

Section: Introductionmentioning

confidence: 99%

Design Plasmonic Optical 4 × 2 Encoder Based on 2D Photonic Crystal Ring Resonator

2021

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Digital encoders are one of the key devices required in optical communication and digital signal processing systems. In this paper, a new photonic crystal structure is used to design all optical 4x2 encoder constructed from GaAs rods with square lattice in the pentane bachground based on plasmonic effect. Gold rods have also been used at the interface of dielectric rods and lines defect, which create plasmonic properties into the photonic crystal structure. The designed optical device is composed of four input waveguides and two output waveguides with two ring resonators at the resonant wavelength of 1.4mm with TM polarization. The presented encoder platform has the small size of 19 mm ×33 mm, that makes it to integration into all optical communication systems. The encoder operation is simulated and analyzed with numerical Finite Difference Time Domain (FDTD) method hand Plane Wave Expansion (PWE) method. In the proposed structure, we have shown that by selecting the appropriate radius size for the resonant cavities, the desirable wavelength can be obtained. The maximum values of transmission e ciency for the rst and second outputs are 82% and 96%, respectively. Resonant cavities are also located in the crystal lattice in such a way that by activating third input, 50% and 48% of the input signal will be obtained in each output ports indicating (1,1) logic state. So the new plasmonic photonic crystal encoder could be future applicable in the eld of optical computing.

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Nano-optical Switch Based on Photonic Crystal Ring Resonator

Cited by 54 publications

References 17 publications

High-Sensitivity Early Detection Biomedical Sensor for Tuberculosis With Low Losses in the Terahertz Regime Based on Photonic Crystal Fiber Technology

High-Sensitivity Early Detection Biomedical Sensor for Tuberculosis With Low Losses in the Terahertz Regime Based on Photonic Crystal Fiber Technology

Literature Review: On-Chip Photonic Crystals and Photonic Crystal Fiber for Biosensing and Some Novel Trends

Design Plasmonic Optical 4 × 2 Encoder Based on 2D Photonic Crystal Ring Resonator

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