Reflection spectra of etched FBGs under the influence of axial contraction and stress-induced index change.

We present a new theoretical model for the broadband reflection spectra of etched FBGs which includes the effects of axial contraction and stress-induced index change. The reflection spectra of the etched FBGs with several different taper profiles are simulated based on the proposed model. In our observation, decaying exponential profile produces a broadband reflection spectrum with good uniformity over the range of 1540-1560 nm. An etched FBG with similar taper profile is fabricated and the experimental result shows good agreement with the theoretical model.

[1]  Simon Poole,et al.  Photolytic Index Changes in Optical Fibers , 1993 .

[2]  T. Erdogan.  Fiber grating spectra , 1997 .

[3]  Axial contraction in etched optical fiber due to internal stress reduction. , 2013, Optics express.

[4]  Yiping Cui,et al.  Reflection spectra of fiber Bragg gratings with random fluctuations , 2008 .

[5]  Xinyong Dong,et al.  A largely tunable CFBG-based dispersion compensator with fixed center wavelength. , 2003, Optics express.

[6]  Reginald K. Lee,et al.  Highly sensitive fiber Bragg grating refractive index sensors , 2005 .

[7]  J. L. Cruz,et al.  Fabrication of chirped fibre gratings using etched tapers , 1995 .

[8]  K. Hill,et al.  Fiber Bragg grating technology fundamentals and overview , 1997 .

[9]  Jose L. Cruz,et al.  Tunable chirp in Bragg gratings written in tapered core fibers , 2001, Iberoamerican Meeting of Optics and the Latin American Meeting of Optics, Lasers and Their Applications.

[10]  S Barcelos,et al.  Fiber Bragg gratings with various chirp profiles made in etched tapers. , 1996, Applied optics.

[11]  Tingyun Wang,et al.  Fully distributed chirped FBG sensor and application in laser-induced interstitial thermotherapy , 2009, 2009 Asia Communications and Photonics conference and Exhibition (ACP).

[12]  H. Haus,et al.  Design and fabrication of double-chirped mirrors. , 1997, Optics letters.

[13]  J. Mora,et al.  Tunable dispersion compensator based on a fiber Bragg grating written in a tapered fiber , 2004, IEEE Photonics Technology Letters.

[14]  Shao-Ji Jiang,et al.  Optically tunable chirped fiber Bragg grating. , 2012, Optics express.

[15]  Turan Erdogan,et al.  Cladding-mode resonances in short- and long-period fiber grating filters , 2000 .

[16]  Ian Bennion,et al.  Fabrication of chirped Bragg gratings in photosensitive fibre , 1993 .

[17]  Perry Ping Shum,et al.  Electrically tunable dispersion compensator with fixed center wavelength using fiber Bragg grating , 2003 .

[18]  M. Dagenais,et al.  High sensitivity evanescent field fiber Bragg grating sensor , 2005, IEEE Photonics Technology Letters.

[19]  Shinji Yamashita,et al.  High-speed dispersion-tuned wavelength-swept fiber laser using a reflective SOA and a chirped FBG. , 2013, Optics express.