
back-reflection can cause the fiber distal end termination or a sharp bend point
in the fiber itself to overheat and self-destruct. Similarly, when used on the input
end, the angle can dramatically reduce back-reflection into the source laser. Such
back-reflection can damage optical components, generate signal noise, and
create instability in the laser source. In either case, the reflected power is dumped
into some type of absorbing heat sink, which effectively dissipates the energy
without destroying the optical fiber assembly or creating a safety hazard
(Fig. 18.18).
18.6 OPTICAL DETECTION WINDOWS FOR
MICROFLUIDIC FLOW CELLS
Optical detection windows ...