Dispersion Compensation Devices
نویسندگان
چکیده
Dispersion compensation plays a key role in generation, amplification and propagation of femetosecond pulses. In the dispersive medium, the pulse can be broaden or compressed depending on the sign of chirp and dispersion. To obtain the ultrashort pulses, the pulse group delay (GD) should have about frequency independence after the dispersion compensation. Especially to compress a pulse to near the transform limit one should not only compensate the GD but also eliminate the high order dispersion term. In this chapter, we briefly review the calculation formulae and design rules of the various dispersive devices including grating and prism pairs and chirped mirrors. An integrative optimization of chirped mirror and its function in mode locked Ti:sapphire laser is described in details. Finally, a useful tool ─ dispersion map is introduced.
منابع مشابه
Dispersion Compensation using High-Positive Dispersive Optical Fibers
The common and traditional method for dispersion compensation in optical domain is concatenating the transmit optical fiber by a compensating optical fiber having high-negative dispersion coefficient. In this paper, we take an opposite direction and show how an optical fiber with high-positive dispersion coefficient can also be used for dispersion compensation. Our optical dispersion compensati...
متن کاملWideband Dispersion Compensation in Hexagonal Lattice Photonic Crystal Fiber
In this paper, a new structure is provided for the dispersion compensating photonic crystal fibers in order to broaden the chromatic dispersion and increase the dispersion compensating capability in a wide wavelength range. In the structure, putting elliptical holes in the first ring of the inner core clad of a dispersion compensating fiber of the hexagonal lattice, increases the wavelength ran...
متن کاملImplementation of CATV network using different Dispersion compensating Techniques
The main objective of the paper is to implementation of 16-QAM CATV (Community Antenna TV) system. To achieve this task, various dispersion compensation techniques that are more suitable for CATV system in the near future, are determine. It is necessary to use dispersion compensation devices .Dispersion compensation techniques have many advantages as a smooth dispersion profile (i.e. no dispers...
متن کاملWideband Dispersion Compensation in Square Lattice Photonic Crystal Fibe
In this paper, a new structure is provided for the dispersion compensating photonic crystal fibers in order to broaden the chromatic dispersion and increase the dispersion compensating capability in a wide wavelength range. In the structure, putting a combination of circular holes and a star structure in the inner core clad causes the dispersion coefficient profile to be broadened, and addition...
متن کامل