Design and analysis of thermally tunable liquid crystal filled hybrid photonic crystal fiber coupler

Hu, Dora Juan Juan; Shum, Ping; Lu, Chao; Sun, Xiwen; Yu, Xin; Wang, Guanghui

doi:10.1016/j.optcom.2009.03.023

Cited by 18 publications

(11 citation statements)

References 20 publications

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“…Meanwhile, the multi-core PCF has also been extensively researched [10,11]. Multi-core PCF has excellent properties with regard to the coupling characteristics of the splitter, coupler and mode converter [12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Ultra-Wide-Bandwidth Tunable Magnetic Fluid-Filled Hybrid Connected Dual-Core Photonic Crystal Fiber Mode Converter

Sun

2018

Crystals

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Abstract:We propose a tunable magnetic fluid-filled hybrid photonic crystal fiber mode converter. Innovative design principles based on the hybrid connected dual-core photonic crystal fiber and magnetically modulated optical properties of magnetic fluid are developed and numerically verified. The mode converter was designed to convert LP 11 in the index-guiding core to the LP 01 mode in the photonic bandgap-guiding core. By introducing the magnetic fluid into the air-hole located at the center of the photonic bandgap-guiding core, the mode converter can realize a high coupling efficiency and an ultra-wide bandwidth. The coupling efficiency can reach up to 99.9%. At a fixed fiber length, by adjusting the strength of the magnetic field, the coupling efficiency can reach up to 90% and 95% at wavelengths in the ranges of 1.33 µm-1.85 µm and 1.38 µm-1.75 µm, with bandwidth values reaching 0.52 µm and 0.37 µm, respectively. Moreover, it has a good manufacturing flexibility. The mode converter can be used to implement wideband mode-division multiplexing of few-mode optical fiber for high-capacity telecommunications.

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Section: Introductionmentioning

confidence: 99%

Ultra-Wide-Bandwidth Tunable Magnetic Fluid-Filled Hybrid Connected Dual-Core Photonic Crystal Fiber Mode Converter

Sun

2018

Crystals

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“…In particular, sensors based on DC-PCF configurations have been shown to be capable of achieving enhanced sensitivity for refractive index sensing. [18][19][20][21][22][23][24][25] Wu et al 21 demonstrated a high-index DC-PCF sensor, which is based on measuring the shift of the resonant wavelength between the higherorder mode and the fundamental mode. A detection limit of 4.6 × 10 −7 RIU with a sensitivity of 30; 100 nm∕RIU has been demonstrated.…”

Section: Introductionmentioning

confidence: 99%

Design of refractive index sensors based on the wavelength-selective resonant coupling phenomenon in dual-core photonic crystal fibers

et al. 2012

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Design strategies for high-sensitivity refractive index sensors based on the principle of wavelength-selective resonant coupling in dual-core photonic crystal fibers are presented. Phase matching at a single wavelength can be achieved between an analyte-filled microstructured core and a small core with a down-doped rod or one small air hole in the center, thus enabling selectively directional resonant-coupling between the two cores. The transmission spectra of the output light presents a notch at the index-matched wavelength, yielding a resonant wavelength depending on the refractive index of the analyte. Numerical simulations demonstrate that both of the two proposed sensors can be used for highly sensitive detection of low-index analyte. In particular, the configuration realized by introducing the fiber with a small air hole in one core can be used to the detection of the analyte index around 1.33 and the sensitivity reach to 1.2×10(4) nm per refractive index unit (RIU). In addition, the detection limit is as low as 2.5×10(-7) RIU at n(a)=1.33.

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“…This case is of special interest because LCs can be tuned by heat and electric or magnetic fields [13][14][15]. Based on this idea, many different devices have been designed, for example tunable polarisers [16][17][18], attenuators [19] and fiber couplers [20]. A review on various liquid crystal photonic crystal fiber (LCPCF) devices can be found in Ref.…”

mentioning

confidence: 99%

Measurement of group velocity dispersion in a solid-core photonic crystal fiber filled with a nematic liquid crystal

Wahle

Kitzerow

2014

Opt. Lett.

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Liquid crystal-filled photonic crystal fibers (PCFs) are promising candidates for electrically tunable integrated photonic devices. In this Letter, we present group velocity measurements on such fibers. A large mode area PCF, LMA8, was infiltrated with the liquid crystal mixture, E7. The measurements were performed with an interferometric setup. The fiber exhibits several spectral transmission windows in the visible wavelength regime that originate from the bandgap guiding mechanism. The dispersion of these windows is very unusual compared to typical fibers. Our measurements show that it can change from -2500 ps km(-1) nm(-1) to +2500 ps km(-1) nm(-1) within a spectral range of only 15 nm. This leads to multiple zero dispersion wavelengths in the visible wavelength range.

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Design and analysis of thermally tunable liquid crystal filled hybrid photonic crystal fiber coupler

Cited by 18 publications

References 20 publications

Ultra-Wide-Bandwidth Tunable Magnetic Fluid-Filled Hybrid Connected Dual-Core Photonic Crystal Fiber Mode Converter

Ultra-Wide-Bandwidth Tunable Magnetic Fluid-Filled Hybrid Connected Dual-Core Photonic Crystal Fiber Mode Converter

Design of refractive index sensors based on the wavelength-selective resonant coupling phenomenon in dual-core photonic crystal fibers

Measurement of group velocity dispersion in a solid-core photonic crystal fiber filled with a nematic liquid crystal

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