1992
DOI: 10.1088/0964-1726/1/1/006
|View full text |Cite
|
Sign up to set email alerts
|

Wavelength demodulated Bragg grating fiber optic sensing systems for addressing smart structure critical issues

Abstract: Smart materials and adaptive structures will require structurally integrated fiber optic sensing systems that can operate in practical situations including harsh environments. The intracore fiber optic Bragg grating has considerable potential to serve as the sensor of choice for this emerging field. However, its role has been impeded by the lack of a simple, passive and fast method of determining the wavelength of its narrow back-reflected optical signal. We report on the development of just such a wavelength … Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
4
1

Citation Types

0
16
0
1

Year Published

1994
1994
2020
2020

Publication Types

Select...
4
3
2

Relationship

0
9

Authors

Journals

citations
Cited by 55 publications
(17 citation statements)
references
References 5 publications
0
16
0
1
Order By: Relevance
“…The change in phase with fiber strain, c, is given by & 41CflLfmocj (2) c where is a strain-optic parameter which is dependent on the photoelastic coefficients of the fiber (for silica fibers = 0.78). As an example of the system sensitivity, for a 10 m fiber section between the FBG elements, a 1000 j.i.strain (0.1 %) strain on the fiber produces approximately a 100 phase shift.…”
Section: Principlementioning
confidence: 99%
See 1 more Smart Citation
“…The change in phase with fiber strain, c, is given by & 41CflLfmocj (2) c where is a strain-optic parameter which is dependent on the photoelastic coefficients of the fiber (for silica fibers = 0.78). As an example of the system sensitivity, for a 10 m fiber section between the FBG elements, a 1000 j.i.strain (0.1 %) strain on the fiber produces approximately a 100 phase shift.…”
Section: Principlementioning
confidence: 99%
“…These sensors provide a 'quasi-point' sensing capability and are particularly attractive for quasi-distributed sensing, as many gratings can be written into a length of fiber and addressed using either wavelength-division multiplexing or time-division addressing [1][2][3][4][5]. These devices are useful for a variety of applications, in particular in advanced composite materials, or 'smart structures', where fibers can be embedded into the materials to allow real time evaluation of load, strain temperature, vibration, etc.…”
Section: Introductionmentioning
confidence: 99%
“…Общей проблемой опроса массива волоконных брэгговских решеток (ВБР) в сенсорных системах является сложность и дороговизна используемых приборов, обусловленная применяемыми технологиями опроса и мультиплексирования датчиков [1][2][3][4][5]. Волновое [1], временное [2], частотное [3], поляризационное [4] и пространственное [5] мультиплексирование требует применения таких сложных устройств, как оптические анализаторы спектра, спектрометры с перестраиваемыми интерферометрами Фабри -Перо с дифракционными решетками, излучение которых принимается и анализируется на ПЗС-матрицах и т. д. Сложность применяемых технологий мультиплексирования и опроса объясняется и еще одним важным фактором -опрашиваемые датчики не являются адресными, поэтому любое перекрытие спектров ВБС приводит к существенным ошибкам измерений [6][7][8].…”
Section: Introductionunclassified
“…Fiber Bragg grating (FBG) sensors have generated much interest in the area of strain and temperature sensing and are being used in many applications such as structural monitoring and smart structures [1][2][3][4][5]. The critical aspect related to the practical use of an FBG sensor is the necessity of performing accurate measurement of the small wavelength shift associated with thermal and strain state changes.…”
Section: Introductionmentioning
confidence: 99%