Supercontinuum generation with femtosecond optical pulse compression in silicon photonic crystal fibers at 2500 nm

Ghanbari, Ashkan; Kashaninia, Alireza; Sadr, Ali; Saghaei, Hamed

doi:10.1007/s11082-018-1651-5

Cited by 36 publications

(3 citation statements)

References 12 publications

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“…PhCs are designed in one, two, and three-dimensional structures, whose two-dimensional structure has been considered by researchers due to its greater applications and fabrication simplicity. Research groups designed a variety of structures using two-dimensional PhCs such as optical filters [1-5], logic gates [6][7][8], encoders and decoders [9][10][11][12], comparators [13,14], multiplexers and demultiplexers [15,16], adders and subtractors [17][18][19][20][21][22][23][24], registers [25,26], memories [27][28][29], splitters [30][31][32], analog-to-digital converters [33][34][35], optical fibers [36][37][38][39][40][41][42][43], sensors [44][45][46][47][48][49][50], PhC fibers [38,…”

Section: Introductionmentioning

confidence: 99%

High-sensitivity biosensor for simultaneous detection of cancer and diabetes using photonic crystal microstructure

2021

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In this study, we propose a refractive index sensor for the simultaneous detection of cancer and diabetes based on photonic crystals (PhC). The proposed PhC composed of silicon rods in the air bed arranged in a hexagonal lattice forms the fundamental structure, and two tubes are used to place the cancerous or diabetic samples for measurement. The sensor's transmission characteristics are simulated and analyzed by solving Maxwell's electromagnetic equations using the finite-difference time-domain method for samples under study. The diagnosis of three types of cancer and diabetes is based on changing the samples' refractive index by applying the laser source centered at 1550 nm. Our results demonstrate that the proposed structure's quality factor and sensitivity can be adjusted by changing the sensor's geometry. They reveal that the transmission power is between 91% ~ 100%, depending on the sample. The sensitivity range is also between 1294 and 3080 nm/RIU. The maximum figure of merit is about 1550.11 RIU -1 with a detection range of 31×10 -6 RIU. The small biosensor area of 61.56 µm 2 makes it a suitable device for various applications in compact photonic integrated circuits.

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Section: Introductionmentioning

confidence: 99%

High-sensitivity biosensor for simultaneous detection of cancer and diabetes using photonic crystal microstructure

2021

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“…It is possible to confine and control the propagation of electromagnetic waves inside the desired PhC-based structures due to the available photonic band gap (PBG) in PhCs. So far a variety of all-optical devices such as filters [7][8][9][10][11], modulators [12,13], sensors [14][15][16][17][18], optical fibers [19][20][21][22][23][24][25][26], fundamental logic gates [27][28][29][30][31][32][33], encoders [34][35][36], decoders [37][38][39], demultiplexers [40][41][42][43][44], PhC fibers [45][46][47][48][49], interferometers [50,51], comparators [52][53][54]…”

Section: Introductionmentioning

confidence: 99%

Ultra-fast tunable optoelectronic half adder/subtractor based on photonic crystal ring resonators covered by graphene nanoshells

Naghizade

Saghaei

2021

Opt Quant Electron

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This paper reports a new design of a tunable optoelectronic half adder/subtractor. Two photonic crystal (PhC) ring resonators are used to realize the proposed structure. Several silicon rods surrounded by silica rods covered with graphene nanoshells (GNSs) form every PhC ring resonator. Setting the chemical potential of GNS with an appropriate gate voltage, we can tune the PhC resonant mode as desired. The plane wave expansion technique is used to study the photonic band structure of the fundamental PC microstructure, and the finitedifference time-domain method is employed in the final design for solving Maxwell's equations to analyze the light propagation inside the structure. We systematically study the effects of physical parameters on the transmission reflection and absorption spectra. By optimizing the geometric dimensions, resonant absorption peaks can be excited at the same time for GNSs. Our numerical results also reveal the maximum time response is about 0.8 ps. The 200 µm 2 area of the proposed half adder/subtractor makes it the building block of every photonic integrated circuit. Also, the design of various fast signal processing systems in optical communication networks is possible due to using tunable GNSs in PhC ring resonators. This study can introduce the use of two-dimensional materials in the design and implementation of logic circuits.

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“…PhCs are designed in one, two, and three-dimensional structures, whose two-dimensional structure has been considered by researchers due to its greater applications and fabrication simplicity. Research groups designed a variety of structures using two-dimensional PhCs such as optical filters [1][2][3][4][5], logic gates [6][7][8], encoders and decoders [9][10][11][12], comparators [13,14], multiplexers and demultiplexers [15,16], adders and subtractors [17][18][19][20][21][22][23][24], registers [25,26], memories [27][28][29], splitters [30][31][32], analog-to-digital converters [33][34][35], optical fibers [36][37][38][39][40][41][42][43], sensors [44][45][46][47]...…”

Section: Introductionmentioning

confidence: 99%

High-sensitivity biosensor for simultaneous detection of cancer and diabetes using photonic crystal microstructure

Sani

Ghanbari

Saghaei

2021

Preprint

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In this study, we propose a refractive index sensor for the simultaneous detection of cancer and diabetes based on photonic crystals (PhC). The proposed PhC composed of silicon rods in the air bed arranged in a hexagonal lattice forms the fundamental structure, and two tubes are used to place the cancerous or diabetic samples for measurement. The sensor's transmission characteristics are simulated and analyzed by solving Maxwell's electromagnetic equations using the finite-difference time-domain method for samples under study. The diagnosis of three types of cancer and diabetes is based on changing the samples' refractive index by applying the laser source centered at 1550 nm. Our results demonstrate that the proposed structure's quality factor and sensitivity can be adjusted by changing the sensor's geometry. They reveal that the transmission power is between 91% ~ 100%, depending on the sample. The sensitivity range is also between 1294 and 3080 nm/RIU. The maximum figure of merit is about 1550.11 RIU− 1 with a detection range of 31×10− 6 RIU. The small biosensor area of 61.56 µm2 makes it a suitable device for various applications in compact photonic integrated circuits.

show abstract

Supercontinuum generation with femtosecond optical pulse compression in silicon photonic crystal fibers at 2500 nm

Cited by 36 publications

References 12 publications

High-sensitivity biosensor for simultaneous detection of cancer and diabetes using photonic crystal microstructure

High-sensitivity biosensor for simultaneous detection of cancer and diabetes using photonic crystal microstructure

Ultra-fast tunable optoelectronic half adder/subtractor based on photonic crystal ring resonators covered by graphene nanoshells

High-sensitivity biosensor for simultaneous detection of cancer and diabetes using photonic crystal microstructure

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