scholarly journals All-optical modulation and demultiplexing systems with significant timing jitter tolerance through incorporation of pulse-shaping fiber Bragg gratings

2002 ◽  
Vol 14 (2) ◽  
pp. 203-205 ◽  
Author(s):  
Ju Han Lee ◽  
Peh Chiong Teh ◽  
P. Petropoulos ◽  
M. Ibsen ◽  
D.J. Richardson
Keyword(s):  
Pulse Shaping ◽  
Fiber Bragg Gratings ◽  
Bragg Gratings ◽  
Timing Jitter ◽  
Optical Modulation ◽  
All Optical ◽  
Jitter Tolerance

All-optical real-time monitoring of air/vacuum valves in water pipeline systems using fiber Bragg gratings

2021 ◽  
Vol 44 (1) ◽  
Author(s):  
Genivaldo A. de Aquino ◽  
Yvone de F. L. De Lucca ◽  
Thiago D. Cabral ◽  
Pedro M. Lazari ◽  
André L. S. S. Martim ◽  
...  
Keyword(s):  
Real Time ◽  
Fiber Bragg Gratings ◽  
Bragg Gratings ◽  
Real Time Monitoring ◽  
All Optical ◽  
Pipeline Systems ◽  
Water Pipeline

scholarly journals High Speed, Localized Multi-Point Strain Measurements on a Containment Vessel at 1.7 MHz Using Swept-Wavelength Laser-Interrogated Fiber Bragg Gratings

Sensors ◽  
2020 ◽  
Vol 20 (20) ◽  
pp. 5935
Author(s):  
Steve Gilbertson ◽  
Mark Pickrell ◽  
Dario Castano ◽  
Gary Salazar ◽  
Tom Beery ◽  
...  
Keyword(s):  
Strain Measurement ◽  
High Speed ◽  
High Explosive ◽  
Fiber Bragg Gratings ◽  
Bragg Gratings ◽  
Laser Source ◽  
Global Changes ◽  
Element Analysis ◽  
All Optical ◽  
Explosive Detonation

Dynamic elastic strain in ~1.8 and 1.0 m diameter containment vessels containing a high explosive detonation was measured using an array of fiber Bragg gratings. The all-optical method, called real-time localized strain measurement, recorded the strain for 10 ms after detonation with additional measurements being sequentially made at a rate of 1.7 MHz. A swept wavelength laser source provided the repetition rate necessary for such high-speed measurements while also providing enough signal strength and bandwidth to simultaneously measure 8 or more unique points on the vessel’s surface. The data presented here arethen compared with additional diagnostics consisting of a fast spectral interferometer and an optical backscatter reflectometer to show a comparison between the local and global changes in the vessel strain, both dynamically and statically to further characterize the performance of the localized strain measurement. The results are also compared with electrical resistive strain gauges and finite element analysis simulations.

All-optical gain-controlled bidirectional add-drop amplifier using fiber Bragg gratings

2000 ◽  
Vol 12 (7) ◽  
pp. 894-896 ◽  
Author(s):  
C.H. Kim ◽  
H. Yoon ◽  
S.B. Lee ◽  
C.-H. Lee ◽  
Y.C. Chung
Keyword(s):  
Fiber Bragg Gratings ◽  
Optical Gain ◽  
Bragg Gratings ◽  
All Optical
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