Mode expansion theory and application in step-index multimode fibres for astronomical spectroscopy

2021 ◽  
Author(s):  
Eloy Hernandez ◽  
Martin Roth ◽  
Klaus Petermann ◽  
Andreas Kelz ◽  
Benito Moralejo ◽  
...  
Keyword(s):  
Mode Expansion ◽  
Step Index ◽  
Expansion Theory

Fractal plasmonic metamaterials: physics and applications

2015 ◽  
Vol 4 (3) ◽  
Author(s):  
Shiwei Tang ◽  
Qiong He ◽  
Shiyi Xiao ◽  
Xueqin Huang ◽  
Lei Zhou
Keyword(s):  
Surface Plasmon ◽  
Effective Medium ◽  
Mode Expansion ◽  
Periodic Arrays ◽  
Full Wave ◽  
Subwavelength Apertures ◽  
Complex Shapes ◽  
Plasmonic Metamaterials ◽  
Plasmon Resonances ◽  
Expansion Theory

AbstractWe review our recent works on a particular type of metamaterials (MTMs), which are metallic plates drilled with periodic arrays of subwavelength apertures typically in fractal-like complex shapes. We first show that such MTMs can well mimic plasmonic metals in terms of surface plasmon properties, but with plasmon resonances solely dictated by their aperture geometries rather than the constitutional materials. We then develop an effective-medium description for such plasmonic MTMs based on the mode expansion theory. Based on these theoretical understandings, we show that such MTMs exhibit several interesting applications, such as superlensing, hyperlensing, and enhancing light-matter interactions, which are demonstrated by microwave experiments or full-wave simulations.

Multimode interference in circular step-index fibers studied with the mode expansion approach

2007 ◽  
Vol 24 (10) ◽  
pp. 2707 ◽  
Author(s):  
Hongbo Li ◽  
Moysey Brio ◽  
Li Li ◽  
Axel Schülzgen ◽  
Nasser Peyghambarian ◽  
...  
Keyword(s):  
Multimode Interference ◽  
Mode Expansion ◽  
Step Index

scholarly journals Mode-expansion theory for inhomogeneous meta-surfaces

2013 ◽  
Vol 21 (22) ◽  
pp. 27219 ◽  
Author(s):  
Shiyi Xiao ◽  
Qiong He ◽  
Che Qu ◽  
Xin Li ◽  
Shulin Sun ◽  
...  
Keyword(s):  
Mode Expansion ◽  
Expansion Theory

Mode expansion and photon operators in dispersive and absorbing dielectrics

2001 ◽  
Vol 48 (1) ◽  
pp. 67-84 ◽  
Author(s):  
Omar Di Stefano ◽  
Salvatore Savasta ◽  
Raffaello Girlanda
Keyword(s):  
Mode Expansion

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

Measurement of the numerical aperture of a step-index optical fibre

1976 ◽  
Vol 12 (3) ◽  
pp. 63 ◽  
Author(s):  
L. Jeunhomme ◽  
J.P. Pocholle
Keyword(s):  
Optical Fibre ◽  
Numerical Aperture ◽  
Step Index
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