Numerical investigation of multimode interference in a multimode fiber and its applications in optical sensing

2006 ◽  
Author(s):  
Qian Wang ◽  
Gerald Farrell
Keyword(s):  
Numerical Investigation ◽  
Optical Sensing ◽  
Multimode Interference ◽  
Multimode Fiber

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

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.

FBG Sensor Demodulated by Multimode Interference of Multimode Fiber

2009 ◽  
Author(s):  
Jianzhong Zhang ◽  
Minglei Guo ◽  
Qilin Gao ◽  
Weimin Sun ◽  
Libo Yuan ◽  
...  
Keyword(s):  
Multimode Interference ◽  
Multimode Fiber ◽  
Fbg Sensor

Long Period Gratings in Multimode Fiber Fabricated with High-Energy Ion Implantation

2003 ◽  
Vol 22 (4) ◽  
pp. 225-237
Author(s):  
K. J. GRANT ◽  
ROBERTS A. ◽  
D. N. JAMIESON ◽  
B. ROUT ◽  
C. CHER
Keyword(s):  
Ion Implantation ◽  
High Energy ◽  
Multimode Fiber ◽  
Long Period ◽  
Long Period Gratings
Sign in / Sign up

Export Citation Format

Share Document