Download e-book for kindle: Applications of Nonlinear Fiber Optics (Optics and Photonics by Govind Agrawal

By Govind Agrawal

ISBN-10: 0120451441

ISBN-13: 9780120451449

Many of the fabric during this quantity is new. the 1st 3 chapters take care of 3 very important fiber-optic components--fiber-based gratings, couplers, and interferometers--that function the construction blocks of lightwave expertise. In view of the large effect 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 vital functions of nonlinear fiber optics and are dedicated to pulse-compression thoughts, fiber-optic verbal exchange structures, and soliton-based transmission schemes. This quantity may still serve good the necessity of the clinical group attracted to such fields as ultrafast phenomena, optical amplifiers and lasers, and optical communications. it is going to even be important to graduate scholars in addition to scientists and engineers excited 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)

Example text

We refer to Ref. [79] for details. 12 shows the transmitted versus incident power [both normalized to a critical power Pcr 4 ´3γ Lµ] for several detuning values within the stop band by taking κ L 2. The S-shaped curves are well known in the context of optical bistability occurring when a nonlinear medium is placed inside a cavity [88]. 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.

Later, a much larger class of Bragg solitons was identified by solving Eqs. 2) analytically [102]–[104]. The advent of fiber gratings provided an incentive during the 1990s for studying propagation of short optical pulses in such gratings [105]–[115]. The peak intensities required to observe the nonlinear effects are quite high (typically 10 GW/cm2 ) for Bragg gratings made in silica fibers because of a short interaction length (typically 10 cm) and a low value of the nonlinear param- 34 Fiber Gratings eter n2 .

Noting that γg γ when v 1, Eq. 9) reduces to the standard NLS equation, and U corresponds to the forward-wave amplitude since no backward wave is generated under such conditions. Before we can use Eq. 9) for predicting the modulation-instability gain and the frequency at which the gain peaks, we need to know the total power P0 inside the grating when a CW beam with power Pin is incident at the input end of the grating located at z 0. This is a complicated issue for apodized fiber gratings because κ is not constant in the transition or buffer zone.

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Applications of Nonlinear Fiber Optics (Optics and Photonics Series) by Govind Agrawal

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