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Optoelectronic devices what rms linewidth means?

  1. Apr 30, 2010 #1
    Can someone explain to me in the context of optoelectronic devices what rms linewidth means?? For example the rms linewidth of a particular laser is 0.1nm. What does that mean? and what implications does this have on a communications system using that laser?

  2. jcsd
  3. Apr 30, 2010 #2


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    Re: Linewidth

    Real lasers aren't perfect, meaning if you take a closer look at a laser which emits light with a nominal wavelength of say 670nm (laser pointer) you will find that it really emits light in a small range, say from 669.95 to670.05 nm; this means that its linewidth is 0.1 nm.
  4. Jun 8, 2011 #3
    Re: Linewidth

    lovely explanation, dude :-D just the thing!
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