Fiber laser incorporating an intracavity micro-channel for refractive index and temperature sensing

Chengbo Mou, Kaiming Zhou, Edward Davies, Lin Zhang, Ian Bennion

Research output: Contribution to journalArticle

Abstract

In this letter, we present a standard linear cavity fiber laser incorporating a microchannel for refractive index (RI) and temperature sensing. The microchannel of ~6µm width created by femtosecond laser aided chemical etching provides an access to the external liquid; therefore, the laser cavity loss changes with the liquids of different RIs. Thus, at a fixed pump power, the output laser power will vary with the change of RI in the microchannel. The results show that the proposed sensing system has a linear response to both the surrounding medium RI and temperature. The RI sensitivity of the laser system is on the order of 10-3, while the temperature sensitivity is about 0.02 C. Both sensitivities could be further enhanced by employing a more sensitive photodetector and using higher pump power.
Original languageEnglish
Article number28
Pages (from-to)1559-1561
Number of pages3
JournalIEEE Photonics Technology Letters
Volume21
Issue number20
DOIs
Publication statusPublished - 15 Oct 2009

Fingerprint

Fiber lasers
fiber lasers
Refractive index
microchannels
Microchannels
refractivity
Pumps
pumps
Temperature
temperature
Lasers
Laser resonators
sensitivity
Liquids
laser outputs
liquids
Photodetectors
laser cavities
Ultrashort pulses
lasers

Bibliographical note

©2009 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.

Keywords

  • femtosecond laser
  • fiber laser sensor
  • microchannel
  • refractive index sensor
  • fibre lasers
  • fibre optic sensors
  • photodetectors
  • refractive index
  • temperature sensors

Cite this

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title = "Fiber laser incorporating an intracavity micro-channel for refractive index and temperature sensing",
abstract = "In this letter, we present a standard linear cavity fiber laser incorporating a microchannel for refractive index (RI) and temperature sensing. The microchannel of ~6µm width created by femtosecond laser aided chemical etching provides an access to the external liquid; therefore, the laser cavity loss changes with the liquids of different RIs. Thus, at a fixed pump power, the output laser power will vary with the change of RI in the microchannel. The results show that the proposed sensing system has a linear response to both the surrounding medium RI and temperature. The RI sensitivity of the laser system is on the order of 10-3, while the temperature sensitivity is about 0.02 C. Both sensitivities could be further enhanced by employing a more sensitive photodetector and using higher pump power.",
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Fiber laser incorporating an intracavity micro-channel for refractive index and temperature sensing. / Mou, Chengbo; Zhou, Kaiming; Davies, Edward; Zhang, Lin; Bennion, Ian.

In: IEEE Photonics Technology Letters, Vol. 21, No. 20, 28, 15.10.2009, p. 1559-1561.

Research output: Contribution to journalArticle

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AU - Mou, Chengbo

AU - Zhou, Kaiming

AU - Davies, Edward

AU - Zhang, Lin

AU - Bennion, Ian

N1 - ©2009 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.

PY - 2009/10/15

Y1 - 2009/10/15

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