TITLE

Analysis and application of phase shift for identical multiple wavelength sampled fiber Bragg grating

AUTHOR(S)
SUN GUODAN; WANG RONG; PU TAO; WEI ZHIHU; XIONG JINTIAN
PUB. DATE
October 2012
SOURCE
Optica Applicata;2012, Vol. 42 Issue 4, p751
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
A novel identical multiple wavelength sampled fiber Bragg grating (FBG) is proposed. A phase shift between the two adjacent FBG units is achieved by increasing the direct current (DC) refractive index of the FBG. The FBG with identical reflective spectrum is optimized with a designed sampling function. DC phase shift FBGs are analyzed and fabricated, which shows a good agreement with a discrete phase shift method. A dual-wavelength (DW) filter with channel spacing 0.16 nm is fabricated, and the experiment results verified the feasibility of this proposed method. A four-wavelength filter with channel spacing 0.16 nm is then proposed and demonstrated. This method has the following advantages: wavelength design is flexible, fabrication precision and costs are low.
ACCESSION #
90667864

 

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