Influence of frequency detuning on propagation characteristics of optical pulse in ytterbium-doped fiber amplifier

Abstract

Abstract:

In order to study the amplification and propagation characteristics of optical pulse in ytterbium-doped fiber amplifier, the propagation equation of optical pulse in distributed fiber amplifier is established. Using split-step Fourier transform method, the propagation state of optical pulse is simulated, and influence of frequency detuning on the characteristics of optical pulse is discussed especially. The results show that optical pulse is amplified and broaded simulataneously in ytterbium-doped fiber amplifier, so it has a deformed profile and a broadening power spectrum. For the case of frequency detuning, the amplification of optical pulse has declined and the pulse has lost the symmetry the input pulse has. If the center frequency of optical pulse deviates from the gain peak frequency in different directions, the deformation law of pulse is different. Therefore, the influence of the dispersion and nonlinear effect of fiber amplifier and frequency detuning on the propagation characteristics of optical pulse should be considered in the design of amplification system.

Key words: optical communication, propagation characteristics, split-step Fourier transform method, optical pulse, ytterbium-doped fiber amplifier, frequency detuning

CLC Number:

TN253

ZHOU Xiao-hong, WANG Ze-yong, WANG Li, GAO Xiao-rong, LUO Bin. Influence of frequency detuning on propagation characteristics of optical pulse in ytterbium-doped fiber amplifier[J]. J4, 2011, 28(1): 122-126.

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