EOMs Operating Manual
Ref. Ed. 0
–
08/02/2021
11
•
Check connectors compatibility:
Fig. 16
•
Avoid any shock on the housing, the fiber jacket or the optical connectors.
•
Because Lithium Niobate crystal is naturally birefringent, LiNbO
3
modulators are polarization
sensitive devices. The input light must be injected in the waveguide along a specific
orientation, as accurately as possible. Therefore a Single Mode
–
SM - and Polarization
Maintaining
–
PM - fiber is recommended at the input. If a SM fiber non PM is used, one must
use a polarization controller to obtain the desired light orientation at the input of the
modulator chip.
•
Output Fiber: This will depend on your setup and the other components along the optical path.
There is generally no drawback in using a PM output fiber, even when reconnecting to a SM
fiber.
•
Please also note that iXblue modulators:
-
are birefringent when operating in the O Band, C Band and 2
µ
m (TE and TM modes
propagates with different properties).
-
Are polarizing for all Near Infra-Red operation or
when the option “
-
Pol” (embedded and in
-
line polarizer) is selected for the O Band, C Band.
