Abstract

We describe a reflection-based fiber filter fabricated by plasma etching a surface corrugation Bragg grating on a tapered single-mode fiber. The taper waist with the grating forms the functional part of the filter, and the adiabatic taper transition removes unwanted higher-order modes. The spectral response is controlled by varying the taper diameter while maintaining a constant grating period. Reflection spectra have been investigated theoretically and experimentally and found to be in good agreement.

© 2007 Optical Society of America

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References

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2006

D. Grobnic, S. J. Mihailov, H. Ding, and C. W. Smelser, IEEE Photon. Technol. Lett. 18, 160 (2006).
[CrossRef]

W. Ding, S. R. Andrews, T. A. Birks, and S. A. Maier, Opt. Lett. 31, 2556 (2006).
[CrossRef] [PubMed]

2004

1997

T. Erdogan, J. Lightwave Technol. 15, 1277 (1997).
[CrossRef]

1995

M. G. Xu, L. Dong, L. Reekie, J. A. Tucknott, and J. L. Cruz, Electron. Lett. 31, 823 (1995).
[CrossRef]

1992

T. A. Birks and Y. W. Li, J. Lightwave Technol. 10, 432 (1992).
[CrossRef]

1986

J. D. Love and W. M. Henry, Electron. Lett. 22, 912 (1986).
[CrossRef]

1984

T. Bricheno and A. Fielding, Electron. Lett. 20, 230 (1984).
[CrossRef]

1982

R. B. Dyott and P. F. Schrank, Electron. Lett. 18, 980 (1982).
[CrossRef]

1980

R. A. Bergh, G. Kotler, and H. J. Shaw, Electron. Lett. 16, 260 (1980).
[CrossRef]

1978

K. O. Hill, Y. Fujii, D. C. Johnson, and B. S. Kawasaki, Appl. Phys. Lett. 32, 647 (1978).
[CrossRef]

Appl. Opt.

Appl. Phys. Lett.

K. O. Hill, Y. Fujii, D. C. Johnson, and B. S. Kawasaki, Appl. Phys. Lett. 32, 647 (1978).
[CrossRef]

Electron. Lett.

M. G. Xu, L. Dong, L. Reekie, J. A. Tucknott, and J. L. Cruz, Electron. Lett. 31, 823 (1995).
[CrossRef]

T. Bricheno and A. Fielding, Electron. Lett. 20, 230 (1984).
[CrossRef]

R. A. Bergh, G. Kotler, and H. J. Shaw, Electron. Lett. 16, 260 (1980).
[CrossRef]

R. B. Dyott and P. F. Schrank, Electron. Lett. 18, 980 (1982).
[CrossRef]

J. D. Love and W. M. Henry, Electron. Lett. 22, 912 (1986).
[CrossRef]

IEEE Photon. Technol. Lett.

D. Grobnic, S. J. Mihailov, H. Ding, and C. W. Smelser, IEEE Photon. Technol. Lett. 18, 160 (2006).
[CrossRef]

J. Lightwave Technol.

T. A. Birks and Y. W. Li, J. Lightwave Technol. 10, 432 (1992).
[CrossRef]

T. Erdogan, J. Lightwave Technol. 15, 1277 (1997).
[CrossRef]

V. Hodzic, J. Orloff, and C. C. Davis, J. Lightwave Technol. 22, 1610 (2004).
[CrossRef]

Opt. Lett.

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Figures (4)

Fig. 1
Fig. 1

Schematic showing the working principle of the surface grating fiber taper.

Fig. 2
Fig. 2

Taper diameter dependence of (a) the effective modal index and (b) the coupling coefficient [Eq. (2a)]. (c) Schematic cross section of the grating fiber taper.

Fig. 3
Fig. 3

(a) Scanning electron micrograph of the surface corrugation Bragg grating fiber taper. (b) Reflectivity and transmittance spectra of the sample of type I. The calculated resonant wavelengths are marked with arrows.

Fig. 4
Fig. 4

Diameter profiles of the taper samples of (a) type II and (b) type III in their grating regions. (c) and (d) show the measured (Mea.) and calculated (Cal.) reflectivity spectra for samples II and III, respectively. The calculated curves have been moved downward by 20 dB for clarity.

Equations (5)

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λ R = 2 Λ n 0 ( D , λ R ) ,
κ = i ω c μ 4 A Δ ε ( x , y ) [ e ̂ f ( x , y ) × h ̂ b * ( x , y ) ] a ̂ z d A ,
1 2 A [ e ̂ f ( x , y ) × h ̂ f * ( x , y ) ] a ̂ z d A = 1 ,
E f , b = A f , b ( z ) exp [ ± i 0 , L z β 0 ( z ) d z ] e ̂ f , b ( x , y , z ) ,
d A b ( z ) d z = A 0 κ ( z ) n 0 ( z ) e i 0 L β 0 ( z ) d z exp [ i 2 0 z β 0 ( z ) d z ]

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