Achievement of Linearly Polarized Single-transverse-mode Emission from Active Multimode Fiber via Multimode Interference

2009 ◽  
Author(s):  
X. Zhu ◽  
A. Schülzgen ◽  
H. Li ◽  
L. Li ◽  
V. L. Temyanko ◽  
...  
Keyword(s):  
Transverse Mode ◽  
Multimode Interference ◽  
Multimode Fiber ◽  
Linearly Polarized

Single-transverse-mode output from a fiber laser based on multimode interference

2008 ◽  
Vol 33 (9) ◽  
pp. 908 ◽  
Author(s):  
X. Zhu ◽  
A. Schülzgen ◽  
H. Li ◽  
L. Li ◽  
Q. Wang ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Transverse Mode ◽  
Multimode Interference

All-fiber passively mode-locked laser using nonlinear multimode interference of step-index multimode fiber

2018 ◽  
Vol 6 (11) ◽  
pp. 1033 ◽  
Author(s):  
Tao Chen ◽  
Qiaoli Zhang ◽  
Yaping Zhang ◽  
Xin Li ◽  
Haikun Zhang ◽  
...  
Keyword(s):  
Multimode Interference ◽  
Multimode Fiber ◽  
Step Index ◽  
Mode Locked Laser

Single-Transverse-Mode Operation of a Coiled Multimode Fiber Amplifier

2000 ◽  
Vol 11 (12) ◽  
pp. 21 ◽  
Author(s):  
Jeffrey P. Koplow ◽  
Dahv A. V. Kliner ◽  
Lew Goldberg
Keyword(s):  
Transverse Mode ◽  
Fiber Amplifier ◽  
Multimode Fiber ◽  
Mode Operation

scholarly journals Fiber Vector Bend Sensor Based on Multimode Interference and Image Tapping

Sensors ◽  
2019 ◽  
Vol 19 (2) ◽  
pp. 321
Author(s):  
Ziyang Zhang ◽  
Aashia Rahman ◽  
Julia Fiebrandt ◽  
Yu Wang ◽  
Kai Sun ◽  
...  
Keyword(s):  
Single Mode ◽  
Single Mode Fiber ◽  
Bend Angle ◽  
Multimode Interference ◽  
Multimode Fiber ◽  
Bend Radius ◽  
Light Intensity Distribution ◽  
Imaging Processing ◽  
Core Fiber ◽  
Bend Sensor

A grating-less fiber vector bend sensor is demonstrated using a standard single mode fiber spliced to a multimode fiber as a multimode interference device. The ring-shaped light intensity distribution at the end of the multimode fiber is subject to a vector transition in response to the fiber bend. Instead of comprehensive imaging processing for the analysis, the image can be tapped out by a seven-core fiber spliced to the other end of the multimode fiber. The seven-core fiber is further guided to seven single mode fibers via a commercial fan-out device. By comparing the relative light intensities received at the seven outputs, both the bend radius and its direction can be determined. Experiment has shown that a slight bend displacement of 10 µm over a 1.2-cm-long multimode fiber in the X direction (bend angle of 0.382°) causes a distinctive power imbalance of 4.6 dB between two chosen outputs (numbered C4 and C7). For the same displacement in the Y direction, the power ratio between the previous two outputs C4 and C7 remains constant, while the imbalance between another pair (C3 and C4) rises significantly to 7.0 dB.

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