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Schemes for referencing of intensity-modulated optical sensor systems

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Book cover Optical Fiber Sensor Technology

Part of the book series: Optical and Quantum Electronics Series ((OISS,volume 1))

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Abstract

For over a decade, intensity modulation has remained one of the most extensively investigated forms of optical signal modulation for sensing applications [1-10]. The simple reason for the extensive and diversified usage of this modulation scheme is a multitude of potential benefits that include the inherent simplicity, reliability, flexibility and relatively low costs. Although intensity-modulated optical fiber sensors have been fabricated in many different designs and with varying degrees of complexity, the essential building blocks of a simple optical fiber sensor system are depicted in Fig. 12.1. Light from an optical source, such as a light-emitting diode (LED), is coupled into an optical fiber for transmission to the optical sensor where it can be modulated in accordance with the state of a measurand. When using reflection-mode sensing the modulated optical signal can be retroreflected into the same optical fiber for transmission to the photo-detector [9]. However, in transmission-mode sensing a second optical fiber is normally used for the transmission of the modulated signal to the photodetector.

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Authors
  1. G. Murtaza
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  2. J. M. Senior
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Editor information

Editors and Affiliations

  1. Department of Electrical, Electronic and Information Engineering City University, London, UK

    K. T. V. Grattan (Head) (Head)

  2. ERA Technology Limited, Leatherhead, UK

    B. T. Meggitt

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© 1995 Springer Science+Business Media Dordrecht

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Murtaza, G., Senior, J.M. (1995). Schemes for referencing of intensity-modulated optical sensor systems. In: Grattan, K.T.V., Meggitt, B.T. (eds) Optical Fiber Sensor Technology. Optical and Quantum Electronics Series, vol 1. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-1210-9_12

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  • DOI: https://doi.org/10.1007/978-94-011-1210-9_12

  • Publisher Name: Springer, Dordrecht

  • Print ISBN: 978-94-010-4530-8

  • Online ISBN: 978-94-011-1210-9

  • eBook Packages: Springer Book Archive

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