Tunable Fiber-Optic Parametric Amplifier Based on Near-Zero Ultraflat Dispersion PCF for Communication Wavelength

Maji, Partha Sona; Chaudhuri, Partha Roy

doi:10.1109/jphot.2015.2438432

Cited by 12 publications

(4 citation statements)

References 30 publications

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“…The capabilities of an already fabricated PCF are further enhanced by filling the air holes of the cladding with suitable materials: liquid [16], gas [17], or polymer [18]. Successful demonstration of tunable FWM in holey/thermooptic liquid-filled PCF and liquid crystal filled PCF has been done by changing the temperature and electric field, respectively [19][20][21][22][23]. Such a tailorable nonlinear process allows the imaging of different molecular elements using a single source [24].…”

Section: Introductionmentioning

confidence: 99%

Designing tunable narrowband parametric source in Chalcogenide-based dynamic fiber geometry

Chatterjee

Khan

2020

J. Opt.

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We numerically investigate the generation of spectrally isolated narrowband tunable parametric sources by continuous-wave pumping a specially designed gelatin-coated chalcogenide-silica dynamic fiber in the normal dispersion regime. The relative humidity (RH) dependent phase matching dominated by fourth order dispersion has been exploited for the first time, to the best of our knowledge, to produce far-detuned new wavelengths. A tunable source in the range of 0.96–2.5 μm with a tuning rate of 1.3 THz/%RH has been designed by milliwatt pumping a 30 cm long fiber at 1.395 μm. Additionally, the sideband tailorability of about 50 THz close to the visible band was achieved by selectively exciting higher-order fiber modes (HE21) in the anomalous dispersion regime at 0.91 μm. We emphasize that the parametric sources from the proposed host would be extremely useful in short-wave infrared spectroscopy and biomedical applications.

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Section: Introductionmentioning

confidence: 99%

Designing tunable narrowband parametric source in Chalcogenide-based dynamic fiber geometry

Chatterjee

Khan

2020

J. Opt.

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“…Maji and Chaudhuri [7] investigated fiber parameters such as fiber length, pump power and pump wavelength towards the analytical FOPA gains of three ZDW in the near-zero ultra-flat photonic crystal fibers (PCF) around the communication wavelength by tuning pumping condition. A study in [8] concluded that by changing temperature of the fiber and tuning the chromatic dispersion profile and ZDW of the optimized PCF, then a wide gain spectrum in the communication wavelength can be achieved .…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Highly-Nonlinear Dispersion-Shifted Fiber Optical Parametric Gain Spectrum with Fiber Loss and Higher-Order Dispersion Coefficients

et al. 2017

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The previous study investigated the fiber parameters on the analytical one-pump fiber optical parametric amplifier (FOPA) gain spectrum of a loss-free highly-nonlinear dispersion-shifted fiber (HNL-DSF) and got the optimum results for each parameter. However, the FOPA gain of the combination of all the optimum values of the considered parameters was not reported. Hence, this paper intends to investigate the analytical FOPA gain of the combination of all the optimum values of the considered parameters from the previous study. Later, the analytical gain was compared with the numerical gain from the fourth-order Runge-Kutta (RK4) method and Matlab built-in function, ode45. Next, the effect of fiber loss and higher order dispersion coefficients such as fourth and sixth-order dispersion coefficients were studied. It is found that RK4 gives a smaller error and the gain reduces while the bandwidth remains same in presence of fiber loss. The fourth-order dispersion coefficient broadens the bandwidth a bit while maintaining the gain and there are two narrow-band gains generated to the left and right-side of the broad-band gain. The sixth-order dispersion coefficient just shifts the two narrow-band gains toward or away from the broadband gain depending on the positive or negative signs of the sixth-order dispersion coefficient.

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“…There are several ways to optimize the FOPA gain spectrum for instance by increasing the pump power to obtain high parametric gain [7] and place the pump close to zero dispersion frequency to attain wide amplification bandwidth [8]. Either way, one can also include the higher-order dispersion coefficient of a fiber in order to optimize the FOPA gain spectrum.…”

Section: Introductionmentioning

confidence: 99%

Optimizing bandwidth of fiber optical parametric amplifier with different combinations of higher-order dispersion coefficient signs

et al. 2017

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Abstract. This paper investigates the influence of different combinations of second-order (β 2 ), fourth-order (β 4 ) and sixth-order (β 6 ) dispersion coefficient signs (negativity/positivity) to the fiber optical parametric amplifier gain performance. The numerical simulation has exploited the fourth-order Runge-Kutta method to solve the coupled amplitude equations which basically represent the parametric process of four-wave mixing. In the normal regime at which β 2 is positive, the fiber optical parametric amplifier exhibits a poor gain spectrum and it is well performed once the pump is presumed to be in anomalous regime i.e. β 2 is negative. The effect of β 4 is significant when the signal wavelength is further from the pump wavelength and a wide amplification bandwidth is produced when the fiber have positive β 4 in the anomalous regime. As for β 6 , unfortunately in this simulation its influences are hardly can be seen probably because of its small value regardless its sign, but, from phase-mismatch equation it is shown that its impact is prominent when the signal is positioned way far from the pump. All in all, this shown that the signs combination of the higher-order dispersion coefficients are significant in order to optimize the FOPA amplification bandwidth.

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Tunable Fiber-Optic Parametric Amplifier Based on Near-Zero Ultraflat Dispersion PCF for Communication Wavelength

Cited by 12 publications

References 30 publications

Designing tunable narrowband parametric source in Chalcogenide-based dynamic fiber geometry

Designing tunable narrowband parametric source in Chalcogenide-based dynamic fiber geometry

Numerical Simulation of Highly-Nonlinear Dispersion-Shifted Fiber Optical Parametric Gain Spectrum with Fiber Loss and Higher-Order Dispersion Coefficients

Optimizing bandwidth of fiber optical parametric amplifier with different combinations of higher-order dispersion coefficient signs

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