Converting wavelength to frequency
How can we convert wavelength (in meters) to frequency (in Hertz)? There is a relation which goes:
frequency=speed of light/wavelength
But it doesn’t yield sensible results. For example, in UDWDM where the spacing between channels is 0.4nm if we use the above relation, the result will be something around 75 THz! This way it certainly cannot be called “Ultra-Dense” after all.
Thank you all in advance.
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