Vector bending sensors based on fibre Bragg gratings inscribed by infrared femtosecond laser

Amós Martínez, Yicheng Lai, Mykhaylo Dubov, Igor Khrushchev, Ian Bennion

Research output: Contribution to journalArticle

Abstract

A novel, direction-sensitive bending sensor based on an asymmetric fiber Bragg grating (FBG) inscribed by an infrared femtosecond laser was demonstrated. The technique is based on tight transverse confinement of the femto-inscribed structures and can be directly applied in conventional, untreated singlemode fibers. The FBG structure was inscribed by an amplified, titanium sapphire laser system. The grating cross-section was elongated along the direction of the laser beam with the transverse dimensions of approximately 1 by 2 μm. It was suggested that the sensitivity of the device can be improved by inscribing smaller spatial features and by implementing more complex grating designs aimed at maximizing the effect of strain.

Original languageEnglish
Pages (from-to)472-474
Number of pages3
JournalElectronics letters
Volume41
Issue number8
DOIs
Publication statusPublished - 14 Apr 2005

Fingerprint

Fiber Bragg gratings
Ultrashort pulses
Infrared radiation
Sensors
Sapphire
Laser beams
Titanium
Fibers
Lasers

Keywords

  • approximation theory
  • computational complexity
  • fabrication
  • fiber Bragg gratings
  • infrared devices
  • photosensitivity
  • ultraviolet radiation
  • cross-section
  • directional bending sensitivity
  • femtosecond laser
  • flat-clad fiber

Cite this

Martínez, Amós ; Lai, Yicheng ; Dubov, Mykhaylo ; Khrushchev, Igor ; Bennion, Ian. / Vector bending sensors based on fibre Bragg gratings inscribed by infrared femtosecond laser. In: Electronics letters. 2005 ; Vol. 41, No. 8. pp. 472-474.
@article{5aac5dc0c52d4e0dab5c329fbdd9decd,
title = "Vector bending sensors based on fibre Bragg gratings inscribed by infrared femtosecond laser",
abstract = "A novel, direction-sensitive bending sensor based on an asymmetric fiber Bragg grating (FBG) inscribed by an infrared femtosecond laser was demonstrated. The technique is based on tight transverse confinement of the femto-inscribed structures and can be directly applied in conventional, untreated singlemode fibers. The FBG structure was inscribed by an amplified, titanium sapphire laser system. The grating cross-section was elongated along the direction of the laser beam with the transverse dimensions of approximately 1 by 2 μm. It was suggested that the sensitivity of the device can be improved by inscribing smaller spatial features and by implementing more complex grating designs aimed at maximizing the effect of strain.",
keywords = "approximation theory, computational complexity, fabrication, fiber Bragg gratings, infrared devices, photosensitivity, ultraviolet radiation, cross-section, directional bending sensitivity, femtosecond laser, flat-clad fiber",
author = "Am{\'o}s Mart{\'i}nez and Yicheng Lai and Mykhaylo Dubov and Igor Khrushchev and Ian Bennion",
year = "2005",
month = "4",
day = "14",
doi = "10.1049/el:20058278",
language = "English",
volume = "41",
pages = "472--474",
journal = "Electronics letters",
issn = "0013-5194",
publisher = "IET",
number = "8",

}

Vector bending sensors based on fibre Bragg gratings inscribed by infrared femtosecond laser. / Martínez, Amós; Lai, Yicheng; Dubov, Mykhaylo; Khrushchev, Igor; Bennion, Ian.

In: Electronics letters, Vol. 41, No. 8, 14.04.2005, p. 472-474.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Vector bending sensors based on fibre Bragg gratings inscribed by infrared femtosecond laser

AU - Martínez, Amós

AU - Lai, Yicheng

AU - Dubov, Mykhaylo

AU - Khrushchev, Igor

AU - Bennion, Ian

PY - 2005/4/14

Y1 - 2005/4/14

N2 - A novel, direction-sensitive bending sensor based on an asymmetric fiber Bragg grating (FBG) inscribed by an infrared femtosecond laser was demonstrated. The technique is based on tight transverse confinement of the femto-inscribed structures and can be directly applied in conventional, untreated singlemode fibers. The FBG structure was inscribed by an amplified, titanium sapphire laser system. The grating cross-section was elongated along the direction of the laser beam with the transverse dimensions of approximately 1 by 2 μm. It was suggested that the sensitivity of the device can be improved by inscribing smaller spatial features and by implementing more complex grating designs aimed at maximizing the effect of strain.

AB - A novel, direction-sensitive bending sensor based on an asymmetric fiber Bragg grating (FBG) inscribed by an infrared femtosecond laser was demonstrated. The technique is based on tight transverse confinement of the femto-inscribed structures and can be directly applied in conventional, untreated singlemode fibers. The FBG structure was inscribed by an amplified, titanium sapphire laser system. The grating cross-section was elongated along the direction of the laser beam with the transverse dimensions of approximately 1 by 2 μm. It was suggested that the sensitivity of the device can be improved by inscribing smaller spatial features and by implementing more complex grating designs aimed at maximizing the effect of strain.

KW - approximation theory

KW - computational complexity

KW - fabrication

KW - fiber Bragg gratings

KW - infrared devices

KW - photosensitivity

KW - ultraviolet radiation

KW - cross-section

KW - directional bending sensitivity

KW - femtosecond laser

KW - flat-clad fiber

UR - http://www.scopus.com/inward/record.url?scp=18144427185&partnerID=8YFLogxK

UR - http://digital-library.theiet.org/content/journals/10.1049/el_20058278

U2 - 10.1049/el:20058278

DO - 10.1049/el:20058278

M3 - Article

VL - 41

SP - 472

EP - 474

JO - Electronics letters

JF - Electronics letters

SN - 0013-5194

IS - 8

ER -