Bending-Loss Insensitive Fiber with Hole-Assisted Structure

2011 ◽  
Vol E94-B (3) ◽  
pp. 718-724 ◽  
Author(s):  
Kazuhide NAKAJIMA ◽  
Tomoya SHIMIZU ◽  
Takashi MATSUI ◽  
Chisato FUKAI ◽  
Toshio KURASHIMA
Keyword(s):  
Bending Loss

Bending loss formulas for step-index optical fiber and their applicable regions

1981 ◽  
Vol 64 (10) ◽  
pp. 95-103
Author(s):  
Kiyonobu Kusano ◽  
Shigeo Nishida
Keyword(s):  
Optical Fiber ◽  
Step Index ◽  
Bending Loss

scholarly journals Investigation on multi-core fibers with large Aeff and low micro bending loss

2011 ◽  
Vol 19 (11) ◽  
pp. 10595 ◽  
Author(s):  
Katsunori Imamura ◽  
Yukihiro Tsuchida ◽  
Kazunori Mukasa ◽  
Ryuichi Sugizaki ◽  
Kunimasa Saitoh ◽  
...  
Keyword(s):  
Bending Loss

Wavelength dependence of bending loss in monomode optical fibers: effect of the fiber buffer coating

1990 ◽  
Vol 15 (17) ◽  
pp. 947 ◽  
Author(s):  
R. Morgan ◽  
J. S. Barton ◽  
P. G. Harper ◽  
J. D. C. Jones
Keyword(s):  
Optical Fibers ◽  
Wavelength Dependence ◽  
Bending Loss

A novel attenuator based on bending loss in SMF

2005 ◽  
Vol 48 (1) ◽  
pp. 114-118
Author(s):  
Qingying Dou ◽  
Hao Zhang ◽  
Shuzhong Yuan
Keyword(s):  
Bending Loss

Fundamental and high-order mode bending loss in leakage channel fibers

2008 ◽  
Author(s):  
F. Poli ◽  
L. Vincetti ◽  
D. Passaro ◽  
A. Cucinotta ◽  
S. Selleri ◽  
...  
Keyword(s):  
High Order Mode ◽  
High Order ◽  
Order Mode ◽  
Bending Loss

scholarly journals Fully three-dimensional analysis of a photonic crystal assisted silicon on insulator waveguide bend

2018 ◽  
Vol 32 (31) ◽  
pp. 1850344 ◽  
Author(s):  
N. Eti ◽  
Z. Çetin ◽  
H. S. Sözüer
Keyword(s):  
Photonic Crystal ◽  
Numerical Study ◽  
Fdtd Method ◽  
Three Dimensional ◽  
Silicon On Insulator ◽  
Geometrical Parameters ◽  
Low Loss ◽  
Bending Loss ◽  
Difference Time ◽  
Waveguide Bend

A detailed numerical study of low-loss silicon on insulator (SOI) waveguide bend is presented using the fully three-dimensional (3D) finite-difference time-domain (FDTD) method. The geometrical parameters are optimized to minimize the bending loss over a range of frequencies. Transmission results for the conventional single bend and photonic crystal assisted SOI waveguide bend are compared. Calculations are performed for the transmission values of TE-like modes where the electric field is strongly transverse to the direction of propagation. The best obtained transmission is over 95% for TE-like modes.

scholarly journals Strain and Curvature Stability Enhanced SMF Introduction

2017 ◽  
Vol 6 (1) ◽  
pp. 63
Author(s):  
S. Makouei
Keyword(s):  
Refractive Index ◽  
Optical Fiber ◽  
Design Method ◽  
Single Mode ◽  
Effective Area ◽  
Refractive Index Profile ◽  
Curvature Radius ◽  
Geometrical Parameters ◽  
Small Curvature ◽  
Bending Loss

In this paper, the strain insensitive single mode optical fiber with low nonlinear effects and ultra low bending loss (BL), appropriate for small curvature radius installation, is presented. The suggested design method is based on the reverse engineering which evaluates the refractive index profile considering proper mode field diameter (MFD) value. Then, so as to attain the desired bending loss and strain response for the optical fiber, the optimization tool of the evolutionary genetic algorithm (GA) is employed to determine the optical and geometrical parameters of the structure. In the first designed fiber, the calculations for BL, MFD, effective area (Aeff), and effective refractive index (neff) sensitivity to strain in the well-known wavelength of 1.55 µm are 0.0018 dB per each turn of 5 mm curvature radius, 8.53 µm, 58 µm2, and 4.5 × 10-8 µɛ-1, respectively. Furthermore, the effect of placing raised outer cladding in the fiber structure is investigated which exhibits the MFD of 8.63 µm, 0.0093 dB BL for single turn of 5 mm radius, and 87 µm2 Aeff at 1.55 µm. In this case the strain sensitivity of 6.7 × 10-8 µɛ-1 is calculated for the neff. The mentioned effective area is magnificently large in the domain of bend insensitive fibers. In the meantime, the designed structures are insensitive to strain which is a crucial feature in applications with small curvature radius.

scholarly journals EQUILIBRIUM MODE DISTRIBUTION IN W-TYPE GLASS OPTICAL FIBERS

2014 ◽  
Vol 5 (1) ◽  
Author(s):  
Svetislav Savović ◽  
Ana Simović ◽  
Aleksandar Djordjevich ◽  
Aco Janićijević
Keyword(s):  
Optical Fibers ◽  
Coupling Strength ◽  
Intermediate Layer ◽  
Power Flow ◽  
Flow Equation ◽  
Coupling Length ◽  
Modal Dispersion ◽  
Equilibrium Mode ◽  
Bending Loss

Power flow equation is used to calculate equilibrium mode distribution in W-type glass optical fibers. It has been shown how the coupling length for achieving the equilibrium mode distribution in W-type glass optical fibers varies with the depth and width of the intermediate layer and coupling strength for different widths of launch beam distribution. W-type optical fibers have shown effectiveness in reducing modal dispersion and bending loss.

Bending loss measurement using a fiber cavity ringdown scheme

2005 ◽  
Vol 43 (3-5) ◽  
pp. 527-535 ◽  
Author(s):  
Daniel E. Vogler ◽  
Ana Lorencak ◽  
Julien M. Rey ◽  
Markus W. Sigrist
Keyword(s):  
Loss Measurement ◽  
Cavity Ringdown ◽  
Bending Loss

Characteristics of bending loss optimized hole assisted fiber

2008 ◽  
Vol 14 (1) ◽  
pp. 1-9 ◽  
Author(s):  
Koji Ieda ◽  
Kazuhide Nakajima ◽  
Takashi Matsui ◽  
Izumi Sankawa ◽  
Toshiaki Shitaba ◽  
...  
Keyword(s):  
Bending Loss
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