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Wavelength shifts caused by chirp in pulses generated from a gain-switched InGaAsP distributed-feedback laser have been measured with 0.5 ps resolution. The applicability of a simple, two-term analytical expression to describe the chirp is evaluated. For the pulses from the gain-switched laser, the power-dependent ‘‘wavelength-offset’’ term in the formula is the most important.
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Wiesenfeld et al. (1987) studied this question.
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