Overview of Fiber Optic Sensors phần 2 pptx
Overview of Fiber Optic Sensors phần 2 pptx
... index
respectively.
Pressure
Temperature
Refractive
Index of
Liquids
Multimode Fibers
Figure 25 . Hybrid etalon based fiber optic sensors often consist of micromachined cavities that are placed
on the end of optical fibers and can be configured ... concentration in the fiber, the wavelengths used, the optical
power level and the imaging optics.
Light Source
Detector
Modulated Re...
Overview of Fiber Optic Sensors phần 1 pot
... index of refraction of the core
and cladding of the optical fiber. The amount of light captured by the second optical fiber
depends on its acceptance angle and the distance d between the optical fibers. ... the next section a series of spectrally based fiber
sensors that have this characteristic are discussed.
Spectrally Based Fiber Optic Sensors
Spectrally based fiber...
Overview of Fiber Optic Sensors phần 3 ppsx
... Distributed Sensing
Many of the intrinsic and extrinsic sensors may be multiplexed [45] offering the possibility
of large numbers of sensors being supported by a single fiber optic line. The techniques
that ... fibers and ‘n’ output fibers to form
‘m’ by ‘n’ arrays of sensors as in Figure 47.
ω
1
ω
2
ω
3
ω
J
1 2 3 K
11
JK
1K
J1
Sources
Detectors
Figure 47. Extensions of...
Overview of Fiber Optic Sensors phần 4 doc
... Conf. on Optical Fiber Sensors,
Tokyo, p. 315, 1986.
25 . W. W. Morey, G. Meltz and W. H. Glenn, Bragg-Grating Temperature and Strain
Sensors, Proceedings of Optical Fiber Sensors 89, p. 526 , Springer-Verlag, ... Carolina, 1988.
6. E. Udd, editor, Fiber Optic Sensors, Proceedings of SPIE, CR-44, 19 92.
7. S. K. Yao and C. K. Asawa, Fiber Optical Intensity Sensors, IEEE...
Fiber Optic Telecommunication phần 2 pps
...
∆
t
chromatic
= (2 km)
×
(100 ps/km
•
nm)
×
(40 nm) = 8000 ps = 8 ns
∆
t
total
= ( (2
ns)
2
+ (8 ns)
2
)
1 /2
= 8 .24 ns
b. BW = 0.35/
∆
t
total
= 0.35/8 .24 ns = 42. 48 MHz
Expressed ... to
1550 nm. This type of fiber has an index
profile that resembles a “W” and hence is
sometimes referred to as W-profile fiber
(Figure 8-6). Although this type of fibe...
Fiber Optic Telecommunication phần 3 pptx
... 1.544 24 1 -2 km
DS -2 3.1 52 96
DS-3 44.736 6 72
Fiber Optic OC-1 51.84 6 72 50-100 km
OC-3 155. 52 2016
OC- 12 622 .08 8064
OC-18 933. 12 12, 096
OC -24 124 4.16 16, 128
OC-36 1866 .24 24 ,1 92 ... 1558.98 1 92. 3
1541.35 194.5 1559.79 1 92. 2
15 42. 14 194.4 1560.61 1 92. 1
15 42. 94 194.3 1561. 42 1 92. 0
1543.73 194 .2 15 62. 23 191.9
1544.53 194.1 156...
THE FATAL CONCEIT The Errors of Socialism phần 2 pptx
... our knowledge
of evolution to be recognized, I do not wish to dispute that the working
out of Darwin's theory of biological evolution, in all of its ramifications,
is
one of the great intellectual ... achievements of modern times - one that
gives us a completely new view of our world. Its universality as a means
2
6
BETWEEN INSTINCT AND REASON
of explanation is also exp...
The Investing Secrets of Warren Buffett phần 2 pptx
...
advice of people who were acknowledged as “experts”, instead of relying upon his own
research and findings.
Of course this process of trial and error itself is often an important part of the ... Australia.
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¾
Discover some of the common sense tests for determining the financial
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Future selec...