stackprogramer
Full Member level 3
How DFB(Distributed Feedback Laser )laser diode works?
today i was studying DFB laser,i know in it's active region there is Diffraction grating.
you can see image DFB
it is talked it has feed back,it is ambiguous !!
can any explain how it can select a special wavelength ???
in this video
my question in under diffraction grating in active region why other wavelength can not pass???
in advance thanks for attention
today i was studying DFB laser,i know in it's active region there is Diffraction grating.
you can see image DFB
it is talked it has feed back,it is ambiguous !!
can any explain how it can select a special wavelength ???
in this video
in advance thanks for attention
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