Propagation characteristics of single-mode evanescent field couplers

1981 ◽  
Vol 20 (6) ◽  
pp. 1056 ◽  
Author(s):  
S. K. Sheem ◽  
H. F. Taylor ◽  
R. P. Moeller ◽  
W. K. Burns
Keyword(s):  
Single Mode ◽  
Evanescent Field ◽  
Propagation Characteristics

Phase-sensitive polarimetric sensing in the evanescent field of single-mode fibres

1995 ◽  
Vol 29 (1-3) ◽  
pp. 410-415 ◽  
Author(s):  
H. Lehmann ◽  
M.E. Lippitsch ◽  
W. Ecke ◽  
W. Haubenreisser ◽  
R. Willsch ◽  
...  
Keyword(s):  
Single Mode ◽  
Evanescent Field ◽  
Phase Sensitive ◽  
Polarimetric Sensing

Single-polarization single-mode hollow-core negative curvature fiber with nested U-type cladding elements

2021 ◽  
Author(s):  
Qiwei Wang ◽  
Shi Qiu ◽  
Jinhui Yuan ◽  
Guiyao Zhou ◽  
Changming Xia ◽  
...  
Keyword(s):  
Negative Curvature ◽  
Extinction Ratio ◽  
Single Mode ◽  
High Order Mode ◽  
Confinement Loss ◽  
Structure Parameters ◽  
Hollow Core ◽  
Propagation Characteristics ◽  
Potential Applications ◽  
Single Polarization

Abstract Hollow-core negative curvature fibers (HC-NCFs) have become one of the research hotspots in the field of optical fiber because of its potential applications in the data and energy transmissions. In this paper, a new kind of single-polarization single-mode HC-NCF with nested U-type cladding elements is proposed. To achieve the single-polarization single-mode transmission, we use two different silica tube thicknesses that satisfy the resonance and anti-resonance conditions on the U-type cladding elements and the cladding tubes, respectively. Besides, the elliptical elements are introduced to achieve good single-mode performance. By studying the influences of the structure parameters on the propagation characteristics, the optimized structure parameters are obtained. The simulation results show that when the wavelength is located at 1550 nm, the single-polarization single-mode transmission is achieved, along with the polarization extinction ratio of 25749 and minimum high-order mode extinction ratio of 174. Furthermore, the confinement loss is only 0.0015 dB/m.

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