Nothing to do with laser line width.
Merely indicating that the photodiode mixer can be used with a suitable
LO to build an optical spectrum analyser front end.
Bruce
Attila Kinali wrote:
Moin,
On Sun, 31 Mar 2013 12:28:59 +1300
Bruce Griffiths<[email protected]> wrote:
With a suitable low noise tunable LO (laser) the frequency spectrum
beyond the photodiode electrical bandwidth can be explored.
I don't exactly get how the laser spectrum (line width?) can be
exploited to go beyond the photodiode bandwidth?
Could you explain that a little bit?
Attila Kinali
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