Abstract

We demonstrate a grating coupler using an asymmetric nonlinear dual-core fiber with a pair of long-period gratings (LPGs). Simple formulas for the achievement of 100% coupling efficiency and small sidelobes are derived. The passband exhibits steep band transitions. By launching high-intensity optical pumps to alter the refractive indices of the fiber cores through cross-phase modulation, a wavelength tunable LPG dual-core coupler can be realized.

© 2007 Optical Society of America

Full Article  |  PDF Article

References

  • View by:
  • |
  • |

  1. J. L. Archambault, P. St. J. Russell, S. Barcelos, P. Hua, and L. Reekie, Opt. Lett. 19, 180 (1994).
    [CrossRef] [PubMed]
  2. A. M. Vengsarkar, P. J. Lemaire, J. B. Judkins, V. Bhatia, T. Erdogan, and J. E. Sipe, J. Lightwave Technol. 14, 58 (1996).
    [CrossRef]
  3. F. Y. M. Chan and K. S. Chiang, J. Lightwave Technol. 24, 1008 (2006).
    [CrossRef]
  4. A. C. Jacob-Poulin, R. Vallée, S. LaRochelle, D. Faucher, and G. R. Atkins, J. Lightwave Technol. 18, 715 (2000).
    [CrossRef]
  5. F. Y. M. Chan and K. S. Chiang, Opt. Commun. 244, 233 (2005).
    [CrossRef]
  6. M. Miyagi and S. Nishida, J. Opt. Soc. Am. 69, 291 (1979).
    [CrossRef]
  7. A. W. Snyder, J. Opt. Soc. Am. 62, 1267 (1972).
    [CrossRef]
  8. T. Kato, Y. Suetsugu, M. Takagi, E. Sasaoka, and M. Nichimura, Opt. Lett. 20, 988 (1995).
    [CrossRef] [PubMed]
  9. Y. H. Kim, B. H. Lee, Y. Chung, U. C. Paek, and W. T. Han, Opt. Lett. 27, 580 (2002).
    [CrossRef]
  10. S. B. Poole and J. D. Love, Electron. Lett. 27, 1559 (1991).
    [CrossRef]

2006 (1)

2005 (1)

F. Y. M. Chan and K. S. Chiang, Opt. Commun. 244, 233 (2005).
[CrossRef]

2002 (1)

2000 (1)

1996 (1)

A. M. Vengsarkar, P. J. Lemaire, J. B. Judkins, V. Bhatia, T. Erdogan, and J. E. Sipe, J. Lightwave Technol. 14, 58 (1996).
[CrossRef]

1995 (1)

1994 (1)

1991 (1)

S. B. Poole and J. D. Love, Electron. Lett. 27, 1559 (1991).
[CrossRef]

1979 (1)

1972 (1)

Cited By

OSA participates in CrossRef's Cited-By Linking service. Citing articles from OSA journals and other participating publishers are listed here.

Alert me when this article is cited.


Figures (3)

Fig. 1
Fig. 1

Schematic of a LPG-assisted dual-core fiber coupler.

Fig. 2
Fig. 2

Transmission spectra of dual-core couplers for L 1 + L 2 = 7.3 cm and L 1 + L 2 = 3.7 cm , showing an increase in bandwidth with a decrease in device length.

Fig. 3
Fig. 3

Dependences of λ 11 and λ 22 on the pump powers. The inset is the transmission spectra with pump powers 2.9 W (core 1) and 2.4 W (core 2).

Equations (9)

Equations on this page are rendered with MathJax. Learn more.

λ i j = ( N 01 , i N 0 m ) Λ j , i , j = 1 , 2 ,
d A d z = j κ 11 B exp ( j δ 11 z ) , 0 z L 1 ,
d B d z = j κ 11 A exp ( j δ 11 z ) , 0 z L 1 ,
d B d z = j κ 22 A ¯ exp [ j δ 22 ( z L 1 ) ] , L 1 z L 1 + L 2 ,
d A ¯ d z = j κ 22 B exp [ j δ 22 ( z L 1 ) ] , L 1 z L 1 + L 2 ,
κ 11 L 1 = κ 22 L 2 = π 2 ,
A ¯ ( L 1 + L 2 ) 2 = ( π 2 Q 1 Q 2 ) 2 sin 2 ( Q 1 2 ) sin 2 ( Q 2 2 ) ,
L 2 = 0.645 Λ 2 L 1 Λ 1 ,
n 1 T = n 1 + 2 b n 2 NL P A eff ,

Metrics