User`s guide

What is a Tunable Laser? Getting Started with Tunable Laser Sources
Agilent 81689A, 81689B and 81649A Tunable Laser Modules User’s Guide, Third Edition 21
Typical Use Models
Brief description The Agilent 81689A Compact Tunable Laser module operates in the
C-band between 1525 nm and 1575 nm.
The Agilent 81689B Compact Tunable Laser module also operates in
the C-band between 1525 nm and 1575 nm. When compared with the
Agilent 8169A, the Agilent 8169B offers increased output power, and
higher relative wavelength accuracy and wavelength stability.
The Agilent 81649A Compact Tunable Laser module operates in the
L-band between 1570 nm and 1620 nm
Test systems for optical amplifiers You can use a selection of fully remote-controlled Agilent Compact
Tunable Laser modules, in combination with an Agilent 81682A or
Agilent 81642A high power Tunable Laser module, to provide the high
stimulus power needed to characterize optical amplifiers intended for
DWDM applications. When used with an Agilent 81651A Optical
Attenuator module a dynamic range of more than 60 dB can be
achieved. Without the attenuator module, the Agilent 81689A and
Agilent 81649A Compact Tunable Laser modules’ output power can be
attenuated by 9 dB, and the Agilent 81689B Compact Tunable Laser
module’s output power can be attenuated by 10 dB, allowing you to
equalize the power delivered from several sources.
Test systems for integrated
optical devices
You can use Agilent Compact Tunable Laser modules that include a
Panda Polarizing Maintaining Fiber (PMF) output port (optional) as
the well-defined polarization sources required to test devices such as
waveguides.
Test systems for DWDM
multichannel transmission systems
You can use Agilent Compact Tunable Laser modules to set up a
realistic multichannel test-bed for DWDM transmission systems in the
C-Band or L-Band. Their continuous, mode-hop free tuning makes it
quick and easy for you to set up even the most complex configurations
to the target wavelengths and power levels required during
installation and maintenance.
Compact spare for DFB modules
in ITU grids
The Agilent 81689B Compact Tunable Laser module can replace,
without power penatlty, any of a comb of Agilent 81662A DFB Laser
Source modules emitting between 1525 nm and 1575 nm.
Smart loss testers with selectable
wavelength
You can use an Agilent 8163A or B Lightwave Multimeter, an Agilent
Power Sensor module, and an Agilent Compact Tunable Laser module
as a smart loss-test set with selectable wavelength.