High-quality-factor filter based on a photonic crystal ring resonator for wavelength division multiplexing applications

Wu, Yaw‐Dong; Shih, Tien‐Tsorng; Lee, Jian-Jang

doi:10.1364/ao.48.000f24

Cited by 23 publications

(5 citation statements)

References 40 publications

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“…Integrated optical devices based on photonic crystals (PhCs) are a promising platform for high density integration of devices which significantly enhance light-matter interaction [ 1 – 3 ]. In recent years, a wide variety of applications have been proposed and demonstrated, including optical switches [ 4 , 5 ], light emitting diodes [ 6 ], lasers [ 7 , 8 ], all-optical logic gates [ 9 , 10 ], filters [ 11 , 12 ], power splitters [ 13 , 14 ] and highly efficient modulators [ 15 – 17 ]. In particular, PhC microcavities of various architectures have attracted significant interests in molecule sensing due to their compact size, low detect limit (DL) and high sensitivity ( S ) [ 18 – 24 ], thus far, 1D PhC [ 20 , 25 , 26 ], 2D PhC [ 27 – 29 ], L3 cavities [ 30 ], slot waveguides [ 24 ], ring cavities [ 31 – 33 ], have been studied widely for sensing, since the size of PhC sensors are approximately three orders of magnitude less than commercial integrated-optic sensors [ 34 ].…”

Section: Introductionmentioning

confidence: 99%

Design Low Crosstalk Ring-Slot Array Structure for Label-Free Multiplexed Sensing

Huang

Tian

Zhou

et al. 2014

Sensors

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We theoretically demonstrate a low crosstalk ring-slot array structure used for label-free multiplexed sensing. The proposed sensors array is based on an array of three ring-slot and input/output line defect coupling waveguides. Each ring-slot cavity has slightly different cavity spacing and different resonant frequency. Results obtained using two dimensional finite-difference time-domain (2D-FDTD) simulation indicate that the resonant frequencies of each sensor unit in response to the refractive index variations are independent. The refractive index sensitivity is 134 ~ 145.5 nm/RIU (refractive index unit) and the Q factors more than 10 4 can be achieved. The calculated detect limit lower than 1.13 × 10 −4 RIU is obtained. In addition, an extremely small crosstalk lower than −25.8 dB is achieved among the array of three ring-slot cavities. The results demonstrate that this multiplexed sensor array is a promising platform for integrated optical devices and enables highly parallel label-free detection.

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Section: Introductionmentioning

confidence: 99%

Design Low Crosstalk Ring-Slot Array Structure for Label-Free Multiplexed Sensing

Huang

Tian

Zhou

et al. 2014

Sensors

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“…The width of PML around the structure has been taken as 500 nm. The time step for 2D structure is determined by the equation (1), where C is the speed of light in free space.…”

Section: Simulation Results and Analysismentioning

confidence: 99%

“…One of the most interesting devices produced by Photonic Crystals (PCs) is the high-integrated channel add/drop filter, which is significantly important for dense wavelength division multiplexing (DWDM) optical communications systems [1,2] . So far, the channel add/drop filters based on PCs have been realized by Mach-Zehnder interferometers, the non-resonant coupling between two parallel photonic crystal waveguides placed in proximity [3,4] , resonant cavities created by point defect or the line defect resonators in PCs, or super prism effects in PCs [5,6] .…”

Section: Introductionmentioning

confidence: 99%

Two Dimensional Photonic Filter with a Circular Resonant Cavity

Shao

et al. 2013

AMR

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A new type of the two dimensional photonic filter which includes two in-line waveguides and a circular ring resonant cavity is presented in this paper. By using Finite Difference Time Domain (FDTD) method, we calculated and demonstrated the broadband frequency response of the filter and analyzed the impact of changing the dielectric constant of the inner rods on the transmission characteristics of the filter. Compared with the transmission characteristics of a micro-cavity,our numerical results show that such a filter can transmit multiple narrowband signals simultaneously. The number of the passbands of the filter increases with the rings of inner dielectric rods in the cavity. The center wavelength of the passbands can be tuned by adjusting the dielectric constant of the whole rods and inner rods without changing the size of the cavity..

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“…Photonic Crystals can be utilized as integrated optical devices which enhance interactions between light and matters [7]. Many applications have been demonstrated, such as all-optical logic gates [8], filters [9], highly efficient modulators [10], and sensors. For photonic-crystal-based sensors, there are two types.…”

Section: Introductionmentioning

confidence: 99%

A Polished-D-Shape SPR-Based Photonic Crystal Fiber Sensor with High Sensitivity for Measuring Refractive Index

Li,

Jiang,

et al. 2023

Crystals

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In the correspondence, a novel polished-D-shape photonic crystal fiber sensor structure on the basis of surface plasmon resonance is proposed for measuring analyte refractive index. With the help of the finite element method, sensing performances of the structure have been analyzed through numerical simulations along with a step-by-step optimization . In this design, different capillaries are gathered and processed to form a D-shape silica structure and nano-scale gold material is coated on the flattened surface. With utilization of a thin gold film and solid silica background, the resonance effect is excited and the loss curve has red shift along with an increase in refractive index, which is applied for sensing. From the simulation and calculation results, the final sensor structure achieves the optimal performance where values of maximum and average sensitivity reach 32,000 and 12,167 nm/RIU along with a sensing coverage of refractive index from 1.26 to 1.32. Also, the proposed design obtains a range of resonant wavelength from 1810 to 2540 nm. We believe the proposed sensor can be a potential candidate for organic and biological detection and related applications.

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High-quality-factor filter based on a photonic crystal ring resonator for wavelength division multiplexing applications

Cited by 23 publications

References 40 publications

Design Low Crosstalk Ring-Slot Array Structure for Label-Free Multiplexed Sensing

Design Low Crosstalk Ring-Slot Array Structure for Label-Free Multiplexed Sensing

Two Dimensional Photonic Filter with a Circular Resonant Cavity

A Polished-D-Shape SPR-Based Photonic Crystal Fiber Sensor with High Sensitivity for Measuring Refractive Index

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