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The optical source used in a fiber is an injection laser...

This question belongs to Electronics And Communications Engineering Optical Communication
Optical Communication
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The optical source used in a fiber is an injection laser with a relative spectral width $$\frac{{{\sigma _\lambda }}}{\lambda }$$ of 0.0011 at a wavelength of 0.70μm. Estimate the RMS spectral width.

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Correct Answer: Option C
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