Index Guiding Photonic Crystal Fibers With Large Birefringence and Walk-Off

Sharma, Mohit; Borogohain, Nitu; Konar, S.

doi:10.1109/jlt.2013.2281825

Cited by 71 publications

(21 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…While a substantial portion of the THz fields propagate in air with low losses in these PCFs, their bandwidths are narrow. A second kind is the solid core PCF whose wave guiding properties are based on total internal reflection (TIR) principles [11]. While the majority of the wave energy is transmitted within their solid cores, these PCFs usually have high losses because the materials used to construct them have high material absorption losses in the THz regime.…”

Section: Introductionmentioning

confidence: 99%

Circular hole ENZ photonic crystal fibers exhibit high birefringence

et al. 2018

View full text Add to dashboard Cite

Abstract-A novel photonic crystal fiber (PCF) design that yields very high birefringence is proposed and analyzed. Its significantly enhanced birefringence is achieved by filling selected air holes in the cladding with an epsilon-near-zero (ENZ) material. Extensive simulation results of this asymmetric material distribution in the lower THz range demonstrate that the reported PCF has a birefringence above 0.1 and a loss below 0.01 cm -1 over a wide band of frequencies. Moreover, it exhibits near zero dispersion at 0.75 THz for both the X-and Y-polarization modes and a birefringence equal to 0.28. This THz PCF is then scaled successfully to optical frequencies. While the high birefringence is maintained, this optical PCF has a very high loss in its Y-polarization mode and, consequently, yields single-polarization single-mode (SPSM) propagation, exhibiting near zero dispersion at the optical telecom wavelength of 1.55 μm. The ideal ENZ materials used for these conceptual models are replaced with realistic ones for both the THz and optical PCF designs. With the currently available ENZ materials, the realistic PCFs still have a high birefringence, but with higher losses compared to the idealized results. Future developments of ENZ materials that achieve lower loss properties will mitigate this issue in any frequency band of high interest.

show abstract

Section: Introductionmentioning

confidence: 99%

Circular hole ENZ photonic crystal fibers exhibit high birefringence

et al. 2018

View full text Add to dashboard Cite

show abstract

“…Since the discovery in 1996 by Knight et al [1], photonic crystal fibers have remain a very actively researched topic due to wide applications of these fibers in optical communications, signal processing and fiber optic devices [1][2][3][4][5][6][7][8][9][10]. In a photonic crystal fiber (PCF), tiny air holes are arranged in a suitable configuration across the cross section of the fiber which run along the length of the fiber.…”

Section: Introductionmentioning

confidence: 99%

“…In a PCF optical properties can be tailored to achieve desired value by creating an appropriate air hole pattern and changing hole diameter, hole pitch and number of air hole rings. By appropriately changing these parameters, it is possible to achieve single modeness over large wavelength range, uniform dispersion [2][3][4], high as well as low nonlinearity [3][4][5][6], large birefringence [6][7][8][9][10] etc.…”

Section: Introductionmentioning

confidence: 99%

Three octave spanning supercontinuum by red-shifted dispersive wave in photonic crystal fibers

Sharma¹,

Konar²

2015

Journal of Modern Optics

Self Cite

View full text Add to dashboard Cite

Abstract:-This paper presents a three layer index guided lead silicate (SF57) photonic crystal fiber which simultaneously promises to yield large effective optical nonlinear coefficient and low anomalous dispersion that makes it suitable for supercontinuum generation. At an operating wavelength 1550, the typical optimized value of anomalous dispersion and effective nonlinear coefficient turns out to be ~4 / / and ~1078 , respectively. Through numerical simulation it is realized that the designed fiber promises to exhibit three octave spanning supercontinuum from 900 to 7200 nm by using 50 fs 'sech' optical pulses of 5 kW peak power. Due to the cross-phase modulation and four-wave mixing processes, a long range of redshifted dispersive wave generated, which assist to achieve such large broadening. In addition, we have investigated the compatibility of supercontinuum generation with input pulse peak power increment and briefly discussed the impact of nonlinear processes on supercontinuum generation.

show abstract

“…Generally, photonic crystal fibers (PCFs) are made using single material such as silica, with an array of air holes running along the length of the fiber [1][2][3][4][5][6][7][8][9][10]. In PCFs light is guided by two different guiding mechanisms i.e., index guiding [1][2][3][4][5][6] and band gap guiding [7].…”

Section: Introductionmentioning

confidence: 99%