Abstract

Studies have shown that 1st order coupling coefficient dispersion can cause significant effects on the propagation of short pulses in a twin-core coupler. In this paper, we have extended the study to the case of nonidentical cores and investigated the effect of 2nd order dispersive coupling coefficient on switching dynamics. A pair of new coupled nonlinear equations have been presented and analyzed.

© 2002 Optical Society of America

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References

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  1. P. Shum, K. S. Chiang and W.Alec Gambling, �??Switching Dynamics of Short Optical Pulses in a Nonliner Directional Coupler,�?? IEEE J. Quantum Electron. 35, 79-83 (1999).
    [CrossRef]
  2. K. S. Chiang, �??Coupled-mode equation for pulse switching in parallel waveguieds,�?? IEEE J. Quantum Electron. 33, 950-954 (1997).
    [CrossRef]
  3. P. M. Ramos and C. R. Paiva, �??All-Optical Pulse Switching in Twin-Core Fiber Couplers with Intermodal Dispersion,�?? IEEE J.Quantum Electron. 35, 983-989 (1999).
    [CrossRef]
  4. K. S. Chiang, �??Intermodal Dispersion in Two-Core Optical Fibers,�?? Opt. Lett. 20, 997-999 (1995).
    [CrossRef] [PubMed]
  5. H.Ghafouri-Shiraz, P.Shum and M.Nagata, �??A Novel Method for Analysis of Soliton Propagation in Optical Fibers,�?? IEEE J.Quantum Electron. 31, 190-200 (1995).
    [CrossRef]

IEEE J. Quantum Electron. (2)

P. Shum, K. S. Chiang and W.Alec Gambling, �??Switching Dynamics of Short Optical Pulses in a Nonliner Directional Coupler,�?? IEEE J. Quantum Electron. 35, 79-83 (1999).
[CrossRef]

K. S. Chiang, �??Coupled-mode equation for pulse switching in parallel waveguieds,�?? IEEE J. Quantum Electron. 33, 950-954 (1997).
[CrossRef]

IEEE J.Quantum Electron. (2)

P. M. Ramos and C. R. Paiva, �??All-Optical Pulse Switching in Twin-Core Fiber Couplers with Intermodal Dispersion,�?? IEEE J.Quantum Electron. 35, 983-989 (1999).
[CrossRef]

H.Ghafouri-Shiraz, P.Shum and M.Nagata, �??A Novel Method for Analysis of Soliton Propagation in Optical Fibers,�?? IEEE J.Quantum Electron. 31, 190-200 (1995).
[CrossRef]

Opt. Lett. (1)

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Figures (4)

Fig. 1 (a)
Fig. 1 (a)

Propagation of a pulse with C21=C12=0 at A=4.0

Fig. 1(b)
Fig. 1(b)

Propagation of a pulse with C21=C12=0 at A=4.5

Fig. 2 (a)
Fig. 2 (a)

Propagation of a pulse with C21=C12≠0 at A=4.5

Fig. 2(b)
Fig. 2(b)

Propagation of a pulse with C21=C12≠0 at A=4.9

Equations (4)

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i ( a 1 z + 1 v g 1 a 1 t + C 12 ' + a 2 t ) k 1 " 2 2 a 1 t 2 + C 12 a 2 C 12 " 2 2 a 2 t 2 = 0
i ( a 2 z + 1 v g 2 a 2 t + C 21 ' + a 1 t ) k 2 " 2 2 a 2 t 2 + C 21 a 1 C 21 " 2 2 a 1 t 2 = 0
i ( a 1 Z t 0 k 2 " ( 1 v g 1 1 v g 2 ) a 1 T t 0 C 21 ' k 2 " a 2 T ) + 1 2 k 1 " k 2 " 2 a 1 T 2 t 0 2 C 21 k 2 " a 2 + C 21 " 2 k 2 " 2 a 2 T 2 + a 1 2 a 1 = 0
i ( a 2 Z t 0 C 21 ' k 2 " a 1 T ) + 1 2 2 a 2 T 2 t 0 2 C 12 k 2 " a 1 + C 12 " 2 a 1 2 k 2 " T 2 + a 2 2 a 2 = 0

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