Agilent Technologies 81640A Stud Sensor User Manual


 
Optical Output Getting Started with Tunable Laser Sources
Agilent 81480A and 81680A, 40A, 82A, 42A, & 89A Tunable Laser Modules Users Guide, Sixth Edition 27
Optical Output
Polarization Maintaining Fiber
If you have an instrument with a polarization maintaining fiber (PMF),
the PMF is aligned to maintain the state of polarization.
The fiber is of Panda type, with TE mode in the slow axis in line with
the connector key. A well defined state of polarization ensures
constant measurement conditions.
The Agilent 81480A and 81680A/40A/82A/42A Tunable Laser
modules are equipped with PMF outputs as standard.
For the Agilent 81689A Tunable Laser module, PMF output is available
as an option.
Figure 11 PMF Output Connector
Angled and Straight Contact Connectors
Angled contact connectors help you to control return loss. With angled
fiber endfaces, reflected light tends to reflect into the cladding,
reducing the amount of light that reflects back to the source.
The Agilent 81480 and 81680A/40A/82A/42A/89A Tunable Laser
modules can have the following connector interface options:
Option 071, Polarization-maintaining fiber straight contact
connectors, or
Option 072, Polarization-maintaining fiber angled contact
connectors.
E
H
Slow Axis (Polarization Axis)
Connector Key
Fiber Cladding
Fiber Core
(8-µm Diameter)
Stress Rods
Not to Scale