By Govind Agrawal
Many of the fabric during this quantity is new. the 1st 3 chapters take care of 3 vital fiber-optic components--fiber-based gratings, couplers, and interferometers--that function the construction blocks of lightwave know-how. In view of the large impression of rare-earth-doped fibers, amplifiers and lasers made through the use of such fibers are lined in Chapters four and five. The final 3 chapters describe very important functions of nonlinear fiber optics and are dedicated to pulse-compression ideas, fiber-optic conversation platforms, and soliton-based transmission schemes. This quantity should still serve good the necessity of the medical group attracted to such fields as ultrafast phenomena, optical amplifiers and lasers, and optical communications. it's going to even be beneficial to graduate scholars in addition to scientists and engineers desirous about lightwave expertise. * education source for engineers concerned with lightwave expertise* Covers the significance of nonlinear results in designing WDM lightwave structures* modern info for researchers
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Extra info for Applications of Nonlinear Fiber Optics (Optics and Photonics Series)
After Ref. ) in phase-shifted fiber gratings . The elliptic-function solution of uniform gratings can be used to construct the multivalued solution for a λ 4-shifted grating . It turns out that the presence of a phase-shifted region lowers the switching power considerably. The bistable switching does not always lead to a constant output power when a CW beam is transmitted through a grating. As early as 1982, numerical solutions of Eqs. 2) showed that transmitted power can become not only periodic but also chaotic under certain conditions .
A multiple-scale method is commonly used to prove this equivalence; details can be found in Ref. . The analysis used to reduce the nonlinear coupled-mode equations to an effective NLS equation makes use of the Bloch formalism well known in solidstate physics. Even in the absence of nonlinear effects, the eigenfunctions associated with the photonic bands, corresponding to the dispersion relation q2 δ 2 κ 2 , are not A f and Ab but the Bloch waves formed by a linear combination of A f and Ab .
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).
Applications of Nonlinear Fiber Optics (Optics and Photonics Series) by Govind Agrawal