Light beam coupling between standard single mode fibers and highly nonlinear photonic crystal fibers based on the fused biconical tapering technique

Liu, Jianguo; Cheng, Tee-Hiang; Yeo, Yong-Kee; Wang, Yixin; Xue, Lifang; Xu, Zhaowen; Wang, Dawei

doi:10.1364/oe.17.003115

Cited by 14 publications

(9 citation statements)

References 30 publications

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“…By using the self-similarly compressed pulse of 62.16 fs with the peak power of 15.21 kW as the pump, the coupling problem between the TTPCF and the tellurite PCF can be solved with the method of fused biconical tapering [43]. In this case, the evolutions of the temporal and spectral profiles within a 5.5-cm long propagation are shown in Fig.…”

Section: Highly Coherent and Octave-spanning Sc Generationmentioning

confidence: 99%

Mid-Infrared Self-Similar Pulse Compression in a Tapered Tellurite Photonic Crystal Fiber and Its Application in Supercontinuum Generation

Feng

Yuan

Mei

et al. 2018

J. Lightwave Technol.

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In this paper, we design a tapered tellurite photonic crystal fiber (TTPCF) with nonlinear coefficient increasing along the propagation direction, and demonstrate the mid-infrared self-similar pulse compression of the fundamental soliton in such a TTPCF. When the variation of group-velocity dispersion, higher-order dispersion, higher-order nonlinearity, and linear loss are considered, a 1 ps pulse at wavelength 2.5 μm can be compressed to 62.16 fs after a 1.63-m long propagation, along with the negligible pedestal, compression factor Fc of 16.09, and quality factor Qc of 83.16%. Then the compressed pulse is launched into another uniform tellurite PCF designed, and highly coherent and octave-spanning supercontinuum (SC) is generated. Compared to the initial picosecond pulse, the compressed pulse has much larger tolerance of noise level for the SC generation. Our research results provide a promising solution to realize the fiber-based mid-infrared femtosecond pulse source for nonlinear photonics and spectroscopy. Index Terms-Tapered tellurite photonic crystal fiber, self-similar pulse compression, SC generation. I. INTRODUCTION HE ultrashort pulses can find important applications in supercontinuum (SC) generation, frequency comb generation, biological imaging, and optical communication [1]-[4], etc. Over the past few years, several pulse compression

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Section: Highly Coherent and Octave-spanning Sc Generationmentioning

confidence: 99%

Mid-Infrared Self-Similar Pulse Compression in a Tapered Tellurite Photonic Crystal Fiber and Its Application in Supercontinuum Generation

Feng

Yuan

Mei

et al. 2018

J. Lightwave Technol.

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“…And there was a report [9] about an M-Z interferometer using SMF-PCF-SMF structure with conventional technique for refractive index measurement and the maximum refractive index sensitivity as of 198.77 nm/RIU. In addition, the optical properties [10][11][12], the optical waveguide coupling [13], and the generation of supercontinuum characteristics of tapered PCF [14,15] are widely studied by many scholars.…”

Section: Introductionmentioning

confidence: 99%

Research on Fused Tapered Photonic Crystal Fiber Sensor Based on the Method of Intermittent Cooling

Guo

et al. 2016

Journal of Sensors

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Based on the intermittent cooling method, a fused tapered Photonic Crystal Fiber (PCF) interferometer is proposed. In the process of tapering, stop heating and wait for cooling at different taper length. Repeat heating and cooling, until taper goes to the expected length. Compared with the ordinary fused tapered method, the fringe contrast of the transmission spectra of this sensor is 15.06 dB. The transmission spectra in different concentrations of glycerol solution are obtained, and the temperature cross-sensitivity of the sensor is studied. The experimental results show that as the external refractive index increases, the transmission spectra of the sensor shift to longer wavelength. In the measuring glycerol solution, the refractive index sensitivity of the sensor can achieve 797.674 nm/RIU, and the temperature sensitivity is only 0.00125 nm/°C.

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“…One of the solutions is a fused coupler forming with an SMF and a PCF. In [14], an optical coupling in the SMF-PCF coupler was reported, where the air holes were remaining in the coupler taper. However, a fiber coupler formed with PCF is essentially lossy even though the air holes are not collapsed since a fundamental mode cutoff is caused in a PCF taper [15].…”

Section: Introductionmentioning

confidence: 99%

Coupling Characteristics of Fused Optical Fiber Coupler Formed with Single-Mode Fiber and Photonic Crystal Fiber Having Air Hole Collapsed Taper

Yokota

Yashima

Imai

et al. 2016

Advances in OptoElectronics

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Fused coupler forming with a single-mode fiber (SMF) and a photonic crystal fiber (PCF) is one of the solutions for optical coupling from a light source to a PCF. In this paper, we presented coupling characteristics of a fused fiber coupler formed with an ordinary SMF and a PCF having air hole collapsed taper. A prototype of SMF-PCF coupler with air hole collapsed taper was fabricated using CO2 laser irradiation. The coupling efficiency from SMF to PCF was −6.2 dB at 1554 nm wavelength in the fabricated coupler. The structure of the SMF-PCF coupler to obtain high coupling efficiency was theoretically clarified by beam propagation analysis using an equivalent model of the coupler with simplification. It was clarified that appropriately choosing the prestretched or etched SMF diameter and the length of air hole collapsed region was effective to obtain high coupling efficiency that was a result of high extinction ratio at cross port and low excess loss. We also demonstrated that the diameter of prestretched SMF to obtain high coupling efficiency was insensitive to the air hole diameter ratio to pitch of the PCF in the air hole collapsed SMF-PCF coupler.

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Light beam coupling between standard single mode fibers and highly nonlinear photonic crystal fibers based on the fused biconical tapering technique

Cited by 14 publications

References 30 publications

Mid-Infrared Self-Similar Pulse Compression in a Tapered Tellurite Photonic Crystal Fiber and Its Application in Supercontinuum Generation

Mid-Infrared Self-Similar Pulse Compression in a Tapered Tellurite Photonic Crystal Fiber and Its Application in Supercontinuum Generation

Research on Fused Tapered Photonic Crystal Fiber Sensor Based on the Method of Intermittent Cooling

Coupling Characteristics of Fused Optical Fiber Coupler Formed with Single-Mode Fiber and Photonic Crystal Fiber Having Air Hole Collapsed Taper

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