A novel Left-Handed NRD guide directional coupler without LSE11 mode conversion loss

2008 ◽  
Author(s):  
Meng Huang ◽  
Shanjia Xu
Keyword(s):  
Directional Coupler ◽  
Mode Conversion ◽  
Conversion Loss ◽  
Left Handed ◽  
Nrd Guide

A compact polarization splitter utilizing directional coupler with left-handed material

Optik ◽  
2012 ◽  
Vol 123 (12) ◽  
pp. 1112-1114
Author(s):  
Tingting Tang ◽  
Wenli Liu ◽  
Xiujun He ◽  
Xiuying Gao
Keyword(s):  
Directional Coupler ◽  
Polarization Splitter ◽  
Left Handed

Application of RH and LH sections for reduction of coupling coefficients in two-section asymmetric directional couplers

2015 ◽  
Vol 8 (3) ◽  
pp. 559-565 ◽  
Author(s):  
Jakub Sorocki ◽  
Kamil Staszek ◽  
Ilona Piekarz ◽  
Krzysztof Wincza ◽  
Slawomir Gruszczynski
Keyword(s):  
Theoretical Analysis ◽  
Transmission Lines ◽  
Directional Coupler ◽  
Center Frequency ◽  
Coupling Coefficients ◽  
Directional Couplers ◽  
Coupled Line ◽  
Left Handed ◽  
Design Flexibility

A method allowing for reduction of coupling coefficients required for realization of two-section asymmetrical coupled-line directional couplers has been proposed. It has been shown that by connecting uncoupled left-handed and right-handed transmission lines between two coupled-line sections one can obtain greater design flexibility of the resulting circuit, simultaneously with the coupling reduction in coupled-line sections. Moreover, the proposed circuit features the properties of two-section asymmetric directional couplers offering wide operational bandwidth. The theoretical analysis has been verified by measurements of a 3 dB directional coupler operating at the center frequency f0 = 1.5 GHz having coupling imbalance δC = ±0.4 dB and bandwidth 0.75–2.3 GHz.

A very compact electro-optical switch based on a directional coupler with left-handed material

Optik ◽  
2013 ◽  
Vol 124 (14) ◽  
pp. 1859-1861
Author(s):  
Tingting Tang ◽  
Xianqiong Zhong ◽  
Wenli Liu ◽  
Xiuying Gao
Keyword(s):  
Directional Coupler ◽  
Optical Switch ◽  
Left Handed
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