scholarly journals Leakage loss and group velocity dispersion in air-core photonic bandgap fibers

2003 ◽  
Vol 11 (23) ◽  
pp. 3100 ◽  
Author(s):  
Kunimasa Saitoh ◽  
Masanori Koshiba
Keyword(s):  
Group Velocity ◽  
Velocity Dispersion ◽  
Photonic Bandgap ◽  
Group Velocity Dispersion ◽  
Leakage Loss ◽  
Photonic Bandgap Fibers ◽  
Air Core

Group-velocity dispersion measurements in a photonic bandgap fiber

2003 ◽  
Vol 20 (8) ◽  
pp. 1611 ◽  
Author(s):  
J. Jasapara ◽  
Tsing Hua Her ◽  
R. Bise ◽  
R. Windeler ◽  
D. J. DiGiovanni
Keyword(s):  
Group Velocity ◽  
Velocity Dispersion ◽  
Photonic Bandgap ◽  
Group Velocity Dispersion ◽  
Photonic Bandgap Fiber

scholarly journals Manipulating the Propagation of Solitons with Solid-Core Photonic Bandgap Fibers

2012 ◽  
Vol 2012 ◽  
pp. 1-12 ◽  
Author(s):  
O. Vanvincq ◽  
A. Kudlinski ◽  
A. Bétourné ◽  
A. Mussot ◽  
Y. Quiquempois ◽  
...  
Keyword(s):  
Frequency Shift ◽  
Velocity Dispersion ◽  
Photonic Bandgap ◽  
Group Velocity Dispersion ◽  
Significant Loss ◽  
Solid Core ◽  
Raman Gain ◽  
Long Wavelength ◽  
Photonic Bandgap Fibers ◽  
Transmission Window

We review the dynamics of soliton self-frequency shift induced by Raman gain in special solid-core photonic bandgap fibers and its consequences in terms of supercontinuum generation. These photonic bandgap fibers have been designed to allow nonlinear experiments in the first bandgap without suffering from significant loss even when working close to the photonic bandgap edge. We studied experimentally, numerically, and analytically the extreme deceleration of the soliton self-frequency shift at the long-wavelength edge of the first transmission window. This phenomenon is interpreted as being due to a large variation of the group-velocity dispersion in this spectral range and has been obtained with no significant power loss. Then, we investigated experimentally and numerically the generation of supercontinuum in this kind of fibers, in both spectral and temporal domains. In particular, we demonstrated an efficient tailoring of the supercontinuum spectral extension as well as a strong noise reduction at its long-wavelength edge.

Hole-Assisted Lightguide Fiber - A Practical Derivative of Photonic Crystal Fiber

2002 ◽  
Vol 722 ◽  
Author(s):  
Takemi Hasegawa ◽  
Eisuke Sasaoka ◽  
Masashi Onishi ◽  
Masayuki Nishimura ◽  
Yasuhide Tsuji ◽  
...  
Keyword(s):  
Optical Properties ◽  
Photonic Crystal ◽  
Group Velocity ◽  
Fiber Optics ◽  
Optical Fibers ◽  
Velocity Dispersion ◽  
Transmission Loss ◽  
Photonic Bandgap ◽  
Group Velocity Dispersion ◽  
Microstructured Fibers

AbstractUsage of air holes in optical fibers has become a hot subject in fiber optics because of the possibilities for novel transmission properties. Although photonic crystal fibers based on photonic bandgap guidance are the most drastic innovation in this subject, optical fibers containing air holes but not having photonic crystal structures are also being intensively studied. Such air-silica microstructured fibers are more practical than the photonic bandgap fibers because the lack of photonic crystal structure makes the fabrication far easier. Even without the photonic bandgap, the microstructured fibers can exhibit valuable properties in terms of group velocity dispersion and nonlinearity, because the index contrast between air and silica is 10 or more times as large as that of the conventional optical fibers based on doped silica glasses. However, one of the major challenges for practical applications of the air-silica microstructured fibers has been their high transmission losses, which have been several tens to hundreds times higher than those of the conventional fibers. As a solution to this problem, we have proposed a more practical structure called hole-assisted lightguide fiber (HALF). In addition to the air holes for realizing novel optical properties, this structure has a material index profile for waveguiding, and hence is closer to the conventional fibers than the other microstructured fibers are. As a result, novel optical properties can be realized without severe degradation in transmission loss. In experiments, an anomalous group velocity dispersion as large as +35 ps/nm/km at 1550 nm wavelength, which would be unattainable in the conventional fibers, has been realized with a loss of 0.41 dB/km, which is comparable to those of the conventional fibers. Analyses of the losses of the fabricated HALFs suggest that the loss should be lowered by mitigating the effect of the drawing tension and minimizing the power fraction in the holes. It is also shown that the full-vector finite element method realizes accurate modeling of the properties such as dispersion and macrobend loss.

Femtosecond Soliton Laser with All-Negative Group Velocity Dispersion Based on Single All-Solid Ytterbium-Doped Photonic Bandgap Fiber

2008 ◽  
Vol 35 (10) ◽  
pp. 1445-1448
Author(s):  
欧阳春梅 Ouyang Chunmei ◽  
柴路 Chai Lu ◽  
胡明列 Hu Minglie ◽  
宋有建 Song Youjian ◽  
王清月 Wang Qingyue
Keyword(s):  
Group Velocity ◽  
Velocity Dispersion ◽  
Photonic Bandgap ◽  
Group Velocity Dispersion ◽  
Negative Group ◽  
Photonic Bandgap Fiber ◽  
Negative Group Velocity
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