Longitudinal polarization stability of near-elliptic inner-cladding polarization-maintaining photonic crystal fiber

We design a novel kind of polarization beam splitter based on a gold-filled dual-core photonic crystal fiber (DC-PCF). Owing to filling with two gold wires in this DC-PCF, its coupling characteristics can be changed greatly by the second-order surface plasmon polariton (SPP) and the resonant coupling between the surface plasmon modes and the fiber-core guided modes can enhance the directional power transfer in the two fiber-cores. Numerical results by using the finite element method show the extinction ratio at the wavethlengths of 1.327 µm and 1.55 µm can reach −58 dB and −60 dB and the bandwidths as the extinction ratio better than −12 dB are about 54 nm and 47 nm, respectively. Compared with the gold-unfilled DC-PCF, a 1.746-mm-long gold-filled DC-PCF is better applied to the polarization beam splitter in the two communication bands of λ = 1.327 µm and 1.55 µm.

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Designing analysis of the polarization beam splitter in two communication bands based on a gold-filled dual-core photonic crystal fiber

Zhang¹,

Li²,

Fan³

et al. 2014

“…[17] Since then, some new structures have been also proposed. [18][19][20][21] Huimei He et al designed a high birefringence PCF with mixed air holes structures of which the birefringence is 8.247 × 10 −3 at the wavelength of 1550 nm. [22] Dispersion is one of the most important parameters in PCFs and the PCFs with two zero dispersion wavelengths have important applications in the optimization of the supercontinuum and the inhibition of self-frequency shift of the soliton.…”

Section: Introductionmentioning

confidence: 99%

Designing of a polarization beam splitter for the wavelength of 1310 nm on dual-core photonic crystal fiber with high birefringence and double-zero dispersion

Ya-Jie¹,

Li²,

Wan³

et al. 2014

We have proposed a novel kind of photonic crystal fiber which contains two asymmetric cores. The birefringence and the dispersion are numerically analyzed based on finite element method when the size of the air holes and the pitch of two adjacent air holes are changed. It is shown that the proposed photonic crystal fiber has high birefringence up to the order of 10 −2 and double-zero dispersion points are at the wavelengths of 1310 nm and 800 nm, simultaneously. At the same time, the normalized power and the extinction ratios of the proposed photonic crystal fiber have been simulated. It is demonstrated that, at the wavelength of 1310 nm, the x-polarized mode and the y-polarized mode are separated when the propagation distance is 2.481 mm.

“…Photonic crystal fiber (PCF) with a regular hexagonal array of air holes running along the propagation direction can provide a flexible platform for sensing. [8][9][10] The combination of photonics technology and plasmonics science benefited from the development of coating technique and the SPR sensors based on the PCF have been widely investigated theoretically and experimentally in recent years. [11][12][13][14][15][16] Among these extensively investigated PCF-SPR refractive index sensors, most research was dedicated to multi-channel sensing.…”

Section: Introductionmentioning

confidence: 99%

Numerical analysis of a photonic crystal fiber based on two polarized modes for biosensing applications

Qin¹,

Li²,

Xue³

et al. 2013

This paper presents a theoretical study on a photonic crystal fiber plasmonic refractive index biosensor. The proposed photonic crystal fiber sensor introduces the concept of simultaneous detection with the linearly polarized and radially polarized modes because the sensing performance of the sensor based on both modes is relatively high, which will be useful for selecting the modes to make the detection accurately. The sharp single resonant peaks of the linearly polarized mode and radially polarized mode, are stronger and more sensitive to the variation of analyte refractive index than that of any other polarized mode in this kind of photonic crystal fiber. For linearly polarized mode and radially polarized mode, the maximum sensitivities of 10448.5 nm per refractive index unit and 8230.7 nm per refractive index unit can be obtained, as well as 949.8 and 791.4 for figure of merits in the sensing range of 1.33-1.45, respectively. Compared with the conventional Au-metalized surface plasmon resonance sensors, our device is better and can be applied as a biosensor.