AO Modulator System For recirculating
Loop System
For application of simulating and
testing of long distance fiber-optic
communication lines Brimrose has
developed a fiber-pigtailed AO
modulator system. The recirculating
loop system consists of 2
fiber-pigtailed AO modulators and a
corresponding RF driver. One of the
modulators is place outside the loop
to define the distance of the pulse
transmission which corresponds
directly to the length of the long
distance fiber-optic line.
Since conventional AO device will
frequency shift the transmitted
light by the acoustic carrier
frequency, the Brimrose approach
utilizes a no-shift AO device inside
the loop which does not complicate
testing nor degrade system
performance.
