Mode-coupling Coefficients of Semiconductor/Shiny-metal Waveguides for DFB Lasers

2011 ◽  
Author(s):  
Meng-Mu Shih
Keyword(s):  
Mode Coupling ◽  
Coupling Coefficients

scholarly journals Mode Coupling in the Solar Corona. II. Oblique Incidence

1974 ◽  
Vol 27 (1) ◽  
pp. 43 ◽  
Author(s):  
DB Melrose
Keyword(s):  
Physical Interpretation ◽  
Mode Coupling ◽  
Present Method ◽  
Iterative Procedure ◽  
Oblique Incidence ◽  
Explicit Solutions ◽  
Finite Range ◽  
Coupling Coefficients ◽  
Magnetic Structures ◽  
One Step

Previous discussions of mode coupling at a QT region have assumed vertical incidence and have hus invoked magnetic structures which violate div B = o. A new method is developed here for alculating the coupling coefficients for oblique incidence so that coupling at a QT region can be reated without invoking nonphysical magnetic structures. The method involves solving the Booker uartic equation implicitly in terms of the familiar formulae of magnetoionic theory. A coupling pproximation is introduced which involves one step in an iterative procedure to find explicit solutions rom the implicit ones. The approximation is necessarily valid in a finite range about the critical oupling points. The present method is used to generalize the results of Cohen to allow oblique ncidence. The results of the existing discussions of mode coupling for vertical incidence and nonphysical agnetic structures can be justified both qualitatively and semiquantitatively (although ith a slightly different physical interpretation).

Analysis and design of TEM-TE11 coaxial waveguide bend mode converters

2019 ◽  
Vol 12 (3) ◽  
pp. 198-204 ◽  
Author(s):  
Qiang Zhang ◽  
Xuhao Zhao ◽  
Chengwei Yuan ◽  
Jiande Zhang
Keyword(s):  
Mode Coupling ◽  
Theoretical Calculations ◽  
Coaxial Waveguide ◽  
Coupling Coefficients ◽  
Electromagnetic Mode ◽  
Analysis And Design ◽  
Mode Converters ◽  
Transverse Electromagnetic ◽  
Conversion Efficiencies ◽  
Waveguide Bend

AbstractTwo coaxial waveguide bend mode converters that transform coaxial transverse electromagnetic mode to TE11 coaxial waveguide mode are presented in this paper. Both converters are designed and optimized on the basis of the strictly derived mode coupling coefficients. Conversion efficiencies of both converters are over 99% and the power-handling capacities reach a gigawatt level. The combined dual-bend mode converter is fabricated and tested. The experimental results coincide well with the theoretical calculations and simulations, which demonstrates the feasibility of the designed converter.

The Determination of Mode Coupling Coefficients

1985 ◽  
Vol 32 (6) ◽  
pp. 635-637 ◽  
Author(s):  
E. Popov ◽  
L. Mashev
Keyword(s):  
Mode Coupling ◽  
Coupling Coefficients

Couplings in GaAs/AlGaAs/Metal Photonic Waveguides with Metallic Variations

2012 ◽  
Vol 1396 ◽  
Author(s):  
Meng-Mu Shih
Keyword(s):  
Mode Coupling ◽  
Hybrid Structure ◽  
Wave Mode ◽  
Photonic Devices ◽  
Coupling Coefficients ◽  
Light Emitting ◽  
Photonic Waveguides ◽  
And Performance ◽  
Metal Gratings ◽  
Future Work

ABSTRACTTo have better light-emitting performance, semiconductor-metal periodic photonic waveguides can generate stable wavelengths. This work constructs a multi-parameter model to compute the backward-wave mode-coupling coefficients, which are important to the analysis and performance of photonic devices. For such a semiconductor-metal hybrid structure, a proper photonic technique needs to be utilized to solve this computational complexity.Numerical results demonstrate how the materials of metal gratings, the corrugation amplitudes of metal gratings, and the metallic aluminum mole fraction can affect the coupling coefficients. Further physical interpretation and discussion can support and explain the above results. The results can help engineers decide the values of parameters used in fabrication. Future work and applications will be proposed.

Remote measurement of mode-coupling coefficients in birefringent fiber

1994 ◽  
Vol 19 (12) ◽  
pp. 913 ◽  
Author(s):  
M. Shlyagin ◽  
A. Khomenko ◽  
D. Tentori
Keyword(s):  
Mode Coupling ◽  
Remote Measurement ◽  
Coupling Coefficients ◽  
Birefringent Fiber

Feedforward Equalizers for MDM–WDM in Multimode Fiber Interconnects

2018 ◽  
Vol 39 (2) ◽  
pp. 147-153 ◽  
Author(s):  
Tendai Masunda ◽  
Angela Amphawan
Keyword(s):  
Wavelength Division Multiplexing ◽  
Mode Coupling ◽  
Error Rates ◽  
Coupling Coefficients ◽  
Multimode Fiber ◽  
Bit Error Rates ◽  
Wavelength Division ◽  
Power Coupling ◽  
Channel Mode ◽  
Feedforward Equalizer

AbstractIn this paper, we present new tap configurations of a feedforward equalizer to mitigate mode coupling in a 60-Gbps 18-channel mode-wavelength division multiplexing system in a 2.5-km-long multimode fiber. The performance of the equalization is measured through analyses on eye diagrams, power coupling coefficients and bit-error rates.

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