Supercontinuum generation for optical coherence tomography using magnesium fluoride photonic crystal fiber

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

doi:10.1016/j.ijleo.2017.04.099

Cited by 57 publications

(15 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Thus, waveguides in a PhC can be created by removing one or more rows of dielectric rods. PhC-based structures are excellent choices for designing many types of optical devices such as optical filters [3][4][5][6][7][8], PhC fibers [9][10][11][12][13][14][15][16][17][18], multiplexers and demultiplexers [19][20][21][22][23][24][25][26], encoders and decoders [27][28][29][30], switches [31][32][33][34][35][36], logic gates [37][38][39][40][41][42], analog to digital converters (ADCs) [43][44][45][46][47][48][49], and sensors [50]…”

Section: Photonic Sensorsmentioning

confidence: 99%

A Novel All-Optical Sensor Design Based on a Tunable Resonant Nanocavity in Photonic Crystal Microstructure Applicable in MEMS Accelerometers

et al. 2020

Self Cite

View full text Add to dashboard Cite

In view of the large scientific and technical interest in the MEMS accelerometer sensor and the limitations of capacitive, resistive piezo, and piezoelectric methods, we focus on the measurement of the seismic mass displacement using a novel design of the all-optical sensor (AOS). The proposed AOS consists of two waveguides and a ring resonator in a two-dimensional rod-based photonic crystal (PhC) microstructure, and a holder which connects the central rod of a nanocavity to a proof mass. The photonic band structure of the AOS is calculated with the plane-wave expansion approach for TE and TM polarization modes, and the light wave propagation inside the sensor is analyzed by solving Maxwell’s equations using the finite-difference time-domain method. The results of our simulations demonstrate that the fundamental PhC has a free spectral range of about 730 nm covering the optical communication wavelength-bands. Simulations also show that the AOS has the resonant peak of 0.8 at 1.644µm, quality factor of 3288, full width at half maximum of 0.5nm, and figure of merit of 0.97. Furthermore, for the maximum 200nm nanocavity displacements in the x- or y-direction, the resonant wavelengths shift to 1.618µm and 1.547µm, respectively. We also calculate all characteristics of the nanocavity displacement in positive and negative directions of the x-axis and y-axis. The small area of 104.35 µm2 and short propagation time of the AOS make it an interesting sensor for various applications, especially in the vehicle navigation systems and aviation safety tools.

show abstract

Section: Photonic Sensorsmentioning

confidence: 99%

A Novel All-Optical Sensor Design Based on a Tunable Resonant Nanocavity in Photonic Crystal Microstructure Applicable in MEMS Accelerometers

et al. 2020

Self Cite

View full text Add to dashboard Cite

show abstract

“…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

Self Cite

View full text Add to dashboard Cite

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.

show abstract

“…Therefore, it is possible to enhance axial resolution by using broad bandwidth light sources. The light source not only determines axial OCT resolution via its bandwidth and central emission wavelength but also determines a penetration depth in the sample [4], [5]. A minimum output power with low amplitude noise is also necessary to enable high sensitivity and high speed with realtime OCT imaging.…”

Section: Introductionmentioning

confidence: 99%

“…It provides 1.5 μm axial resolution in free space at 809 nm center wavelength [13]. Ghanbari et al demonstrated an ultrahigh resolution OCT system using PCF to produce a high axial resolution in biological tissues [4]. Povazay et al experimentally demonstrated that using 6 mm long PCF pumped by a 50 fs optical pulse, 0.75 and 0.5 m axial resolution in a free space and biological tissue could be achieved, respectively [14].…”

Section: Introductionmentioning

confidence: 99%

Supercontinuum Generation for Ultrahigh-Resolution OCT via Selective Liquid Infiltration Approach

Sorahi-Nobar¹,

Malekijavan²

2018

RADIOENGINEERING

View full text Add to dashboard Cite

In this paper, we apply liquid infiltration approach for supercontinuum generation (SCG) in photonic crystal fiber (PCF) in which by selectively infiltrating three air holes of PCF, a near zero dispersion is obtained that is a key parameter for SCG. Our numerical results show that by launching a very short input optical pulse of 50 fs in normal dispersion regime with wavelength centered about 700 nm, into 50 mm PCF infiltrated by ethanol, broadband, coherent and ripple free SC as wide as 1000 nm will be achieved that covers the visible light and a part of near infrared spectra used for ultrahigh-resolution optical coherence tomography.

show abstract

Supercontinuum generation for optical coherence tomography using magnesium fluoride photonic crystal fiber

Cited by 57 publications

References 36 publications

A Novel All-Optical Sensor Design Based on a Tunable Resonant Nanocavity in Photonic Crystal Microstructure Applicable in MEMS Accelerometers

A Novel All-Optical Sensor Design Based on a Tunable Resonant Nanocavity in Photonic Crystal Microstructure Applicable in MEMS Accelerometers

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

Supercontinuum Generation for Ultrahigh-Resolution OCT via Selective Liquid Infiltration Approach

Contact Info

Product

Resources

About