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High-birefringence microfiber Sagnac interferometer based humidity sensor.

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Title: High-birefringence microfiber Sagnac interferometer based humidity sensor.
Authors: Sun, Li-Peng1, Li, Jie1, Jin, Long1, Ran, Yang1, Guan, Bai-Ou1 tguanbo@jnu.edu.cn
Source: Sensors & Actuators B: Chemical. Aug2016, Vol. 231, p696-700. 5p.
Subjects: Birefringence, Microfibers, Interferometers, Surface coatings, Polarization (Electrochemistry)
Abstract: A relative humidity (RH) sensor based on a microfiber Sagnac loop interferometer is proposed and demonstrated. The sensor is formed by fusion splicing a high-birefringence elliptical microfiber into a fiber loop mirror without any humidity sensitive coating to the structure. Interferometric fringe with visibility of around 30 dB can be achieved in the transmission spectrum due to phase difference between the two polarization modes travelling through the microfiber region. The proposed structure presents high sensitivity up to ∼201.25 pm/%RH, within an RH range from 30%RH to 90%RH. Moreover, we realize the sensitivity enhancement (up to ∼422.2 pm/%RH) by inserting a reference Panda fiber into the fiber loop. The sensitivity is two to five times of magnitude higher than the counterparts in the literature. The measured response time is around 60 ms, which is much better than the previously-reported devices. [ABSTRACT FROM AUTHOR]
Copyright of Sensors & Actuators B: Chemical is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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DbLabel: Engineering Source
An: 114674388
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  Data: High-birefringence microfiber Sagnac interferometer based humidity sensor.
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  Data: <searchLink fieldCode="AR" term="%22Sun%2C+Li-Peng%22">Sun, Li-Peng</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Li%2C+Jie%22">Li, Jie</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Jin%2C+Long%22">Jin, Long</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Ran%2C+Yang%22">Ran, Yang</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Guan%2C+Bai-Ou%22">Guan, Bai-Ou</searchLink><relatesTo>1</relatesTo><i> tguanbo@jnu.edu.cn</i>
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  Data: <searchLink fieldCode="JN" term="%22Sensors+%26+Actuators+B%3A+Chemical%22">Sensors & Actuators B: Chemical</searchLink>. Aug2016, Vol. 231, p696-700. 5p.
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  Data: <searchLink fieldCode="DE" term="%22Birefringence%22">Birefringence</searchLink><br /><searchLink fieldCode="DE" term="%22Microfibers%22">Microfibers</searchLink><br /><searchLink fieldCode="DE" term="%22Interferometers%22">Interferometers</searchLink><br /><searchLink fieldCode="DE" term="%22Surface+coatings%22">Surface coatings</searchLink><br /><searchLink fieldCode="DE" term="%22Polarization+%28Electrochemistry%29%22">Polarization (Electrochemistry)</searchLink>
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  Label: Abstract
  Group: Ab
  Data: A relative humidity (RH) sensor based on a microfiber Sagnac loop interferometer is proposed and demonstrated. The sensor is formed by fusion splicing a high-birefringence elliptical microfiber into a fiber loop mirror without any humidity sensitive coating to the structure. Interferometric fringe with visibility of around 30 dB can be achieved in the transmission spectrum due to phase difference between the two polarization modes travelling through the microfiber region. The proposed structure presents high sensitivity up to ∼201.25 pm/%RH, within an RH range from 30%RH to 90%RH. Moreover, we realize the sensitivity enhancement (up to ∼422.2 pm/%RH) by inserting a reference Panda fiber into the fiber loop. The sensitivity is two to five times of magnitude higher than the counterparts in the literature. The measured response time is around 60 ms, which is much better than the previously-reported devices. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Sensors & Actuators B: Chemical is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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      – Type: doi
        Value: 10.1016/j.snb.2016.03.102
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      – Code: eng
        Text: English
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        PageCount: 5
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      – SubjectFull: Birefringence
        Type: general
      – SubjectFull: Microfibers
        Type: general
      – SubjectFull: Interferometers
        Type: general
      – SubjectFull: Surface coatings
        Type: general
      – SubjectFull: Polarization (Electrochemistry)
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            NameFull: Guan, Bai-Ou
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              Text: Aug2016
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