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Frontiers of Optoelectronics

Front Optoelec Chin    2011, Vol. 4 Issue (4) : 420-425     DOI: 10.1007/s12200-011-0172-7
Nearly zero-dispersion, low confinement loss, and small effective mode area index-guiding PCF at 1.55 μm wavelength
Nano-photonics and Optoelectronics Research Laboratory (NORLab), Faculty of Electrical and Computer Engineering, Shahid RajaeeTeacher Training University (SRTTU), Lavizan 16788-15811, Iran
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In this paper, a new simple structure of index-guiding photonic crystal fiber (PCF) is designed and presented. In this PCF, dispersion, confinement loss, and effective mode area characteristics are investigated in the second communication window (1.55 μm). Since 1.55 μm wavelength is widely used in optical communication systems, we try to optimize the PCF characteristics in this wavelength by designing an index-guiding PCF and three versions of optimized PCF. The results show that the dispersion is obtained very close to zero around 4.6×10-4 ps/(nm·km). Also, the confinement loss is 2.303×10-6 dB/km and effective mode area is as small as 2.6 μm2.

Keywords dispersion      effective area      confinement loss      index-guiding      photonic crystal fiber (PCF)     
Corresponding Authors: OLYAEE Saeed,   
Issue Date: 05 December 2011
 Cite this article:   
Mahdieh IZADPANAH,Saeed OLYAEE,Fahimeh TAGHIPOUR. Nearly zero-dispersion, low confinement loss, and small effective mode area index-guiding PCF at 1.55 μm wavelength[J]. Front Optoelec Chin, 2011, 4(4): 420-425.
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Fig.1  Primary structure of PCF with air hole diameter , lattice constant Λ, and 6 air-hole rings
Fig.2  Dispersion curve of primary PCF for different hole diameters and Λ=1.3μm
Fig.3  Dispersion of the primary PCF for different hole diameters and Λ=1.3 μm and for wavelengths around 1.55 μm
Fig.4  Confinement loss curves in primary PCF for different air-holes and Λ=1.3 μm
Fig.5  Confinement loss curves in primary PCF for different air-holes and Λ=1.3 μm around the 1.55 μm wavelength
Fig.6  PCF structure with Λ = 1.3 μm (diameter of air-holes in four inner rings is = 0.90836 μm and the diameter of the air-holes in two last rings is = 1.2 μm)
Fig.7  Confinement loss curve in PCF (a) in a wide wavelength range and (b) around 1.55 μm wavelength
Fig.8  (a) PCF structure with Λ=1.3 μm, = 0.90836 μm (diameter of air-holes in three inner rings) and = 1.2 μm (diameter of air holes in the last three rings) and (b) mode field distribution in the core of PCF
Fig.9  Confinement loss in PCF (a) in a wide wavelength range and (b) around 1.55 μm wavelength
Fig.10  PCF structure with Λ = 1.3 μm and five air hole rings. The diameter of air-holes in the three inner rings is = 0.90836 μm and the diameter of air holes in the two last rings is = 1.2 μm
Fig.11  Confinement loss in PCF (a) in a broad wavelength range and (b) around 1.55 μm wavelength
Fig.12  Comparison between dispersion curves of PCF, PCF, and PCF structures around 1.55 μm wavelength
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