Post-irradiation resonance wavelength adjustment of long period grating based loss filters

We present a simple technique to precisely and continuously adjust the resonance wavelengths of long-period cladding-mode-coupled gratings without strongly affecting the coupling strength. The main principle of this method is based on the strong dependence of the propagation constants and hence the peak positions of the cladding modes on the cladding diameter. Therefore, one can shift the grating resonance wavelength by changing the cladding dimension. In our case, this has been achieved by etching the fiber in a HF acid solution


Published in:
IEE Colloquium on Optical Fibre Gratings (Ref. No.1997/037), 9/1-9/5
Presented at:
IEE Colloquium on Optical Fibre Gratings, London, 7 Feb. 1997
Year:
1997
Publisher:
IEE
Keywords:
Note:
Inst. of Appl. Opt., Swiss Federal Inst. of Technol., Lausanne, Switzerland
5559557
long period grating based loss filters
post-irradiation resonance wavelength adjustment
cladding-mode-coupled gratings
propagation constants
peak positions
cladding diameter dependence
fiber etching
HF acid solution
step index profile
photoinduced refractive index change
band-rejection filter
transmission spectra
Laboratories:




 Record created 2009-01-20, last modified 2018-03-18


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