Appx C: Physical principle of
Talk Set operation
The signal from the microphone modulates the 1550 nm laser
diode which emits the modulated outgoing optical signal via the
optical splitter to the optical adaptor. The incoming signal comes
via the optical splitter to the pin-photodiode where it is
converted to an electrical signal, and then amplified. After that
it goes to the headset speakers.
Kingfisher International
KI021-1 OPTICAL TALK SET
Issue 02
Page 14 of 14
