Get Applications of Nonlinear Fiber Optics PDF
By Govind Agrawal
Because the box grew, Agrawal made up our minds to separate this article off from his Nonlinear Fiber Optics, that is extra desirous about the discipline's basics. This version is meant for senior undergraduates, graduate scholars, engineers and technicians within the telecommunications undefined, and scientists operating with fiber optics and optical communications. It covers the construction blocks of light-wave know-how - fiber-based gratings, couplers, and interferometers - in addition to amplifiers and lasers made utilizing rare-earth-doped fibers; pulse-compression ideas; fiber-optic verbal exchange platforms; and soliton-based transmission schemes.
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Additional info for Applications of Nonlinear Fiber Optics
6. The critical power at which this instability occurs is reduced considerably in the presence of a Bragg grating . Nonκ ), linear birefringence also affects Bragg solitons. 6. 11) where ∆β β0 x β0 y is related to the beat length LB as ∆β 2π LB . These equations support a vector soliton with equal Ô amplitudes such that the peak power required for each component is only 3 5 of that required when only one component is present. Such a vector soliton is referred to as the coupledgap soliton .
In a 1998 experiment, a 6-cm-long fiber grating was used with a value of κ 12 cm 1 . 15 shows transmitted pulse shapes when 100-ps pulses were propagated through this grating. The peak intensity of the input Gaussian pulse is 25 GW/cm2 . 15 Transmitted pulse shape when 100-ps pulses with a peak intensity of 25 GW/cm2 are propagated through a 6-cm-long fiber grating. (After Ref. , c 1998, reprinted with permission from Elsevier Science) branch of the dispersion curve). At lower power levels, pulse is compressed because of the combination of GVD and SPM that leads to soliton-effect compression (discussed in Chapter 6).
The S-shaped curves are well known in the context of optical bistability occurring when a nonlinear medium is placed inside a cavity . In fact, the middle branch of these curves with negative slope is unstable, and the transmitted power exhibits bistability with hysteresis, as shown by the arrows on the solid curve. 12 Transmitted versus incident power for three values of detuning within c American Institute of Physics) the stop band. (After Ref. , as expected from the linear theory since the nonlinear effects are relatively weak.
Applications of Nonlinear Fiber Optics by Govind Agrawal