Do you need help?
Contact us with any question regarding your used Keysight equipment purchase!

Product selection and configuration assistance
Availabilty, warranty extensions, calibration plans, additional software options, education discounts etc.
- Savings of up to 90%
- Working Condition
- Calibrated or Tested
- 30-Day Right-of-Return
- No Customization
- Shipping to limited countries
Keysight N7786B-400
Polarization Synthesizer / 1270nm to 1375nm and 1460nm to 1620nm
$ 18,551.00 Save 55% List Price $ 41,224.44
KeysightCare Assured: Support. Elevated.
Add complete customer care to your order and get:
• 4-business-hour technical response
• Committed repair coverage
Learn more
Cannot ship to:
European Union
Switzerland
Norway
Turkey
Unit only ships within China.
Unit ships worldwide.
|
|
|
Key Benefits
- Comprehensive Polarization Stabilization/Control/Switching Capabilities
- Reset-Free/Endless Operation
- Covers Entire Range from 1.3μm Window up to the L-Band
- Compact Size
Applications
- Transmission System Test: Polarization Sensitivity Analysis on Link / Transmission Quality
- Recirculating Loop Experiments: Loop-Synchronous Polarization Scrambling
- Interferometry: Polarization Stabilization to Maximize Contrast Ratio
The Keysight N7786B polarization synthesizer contains a high-speed Lithium-Niobate based polarization controller and a polarization analyzer plus a microcontroller based driving circuitry.
This unit can operate in various modes:
As Polarization Stabilizer it provides a stable output State of Polarization (SOP) even with fluctuations and drifts of the input SOP. The stabilized output signal is guided in a Standard Single-Mode Fiber (SMF). The output SOP can be defined in the following ways:
- Set-and-forget: When the front button is pushed, the current SOP is stored and maintained, even if polarization changes occur on the instrument input.
- Defined Stokes: The target output SOP can be defined by the user using the Stokes parameters
As Synchronous Scrambler the device switches the SOP of the output signal in a (pseudo) random way with a cycling speed of up to 100 KSOPs/s.
Switching of the SOP occurs within few microseconds. An electrical trigger input can be used to synchronize the scrambler with external events.
As SOP Switch the Keysight N7786B cycles through a sequence of SOPs with a speed of more than 40KHz, which corresponds to a cycle time of less than 25 microseconds. The sequence of SOPs can easily be defined by the user using Stokes coefficients.
Full coverage of the Poincaré Sphere is achieved within few ms.
See downloads for more details022 | ANGLED CONTACT CONNECTORS |
Get up to 10% discount on calibration plans ordered with your used Keysight instrument.
Contact us or request a custom quote to check availability.
To order additional accessories, please contact us or request a custom quote
FAQs
What are the differences between Keysight Used & Keysight Premium Used?
You will find more information about the differences of Keysight's used equipment standards here.
Can I configure a unit to meet my personal needs?
Customization is generally possible with our Keysight Premium Used equipment. The majority of our Keysight Premium Used equipment can be configured just the way you need it. Options can be added at additional cost.
Customizing Keysight Premium Used equipment might change the delivery and lead time of the item.
Some Keysight Used products cannot be customized. Use the contact option on the product page to check with the our eStore team.
What accessories are included?
Keysight Premium Used equipment typically comes with the same accessories and warranty as new products.
For Keysight Used products, the accessories included are mentioned in each listing on the Keysight Store on eBay or the Keysight Alibaba store.
Can you include other accessories?
We currently only offer those accessories which are part of the listing. Other accessories can be purchased separately at extra cost with your purchase of a Keysight Used or Keysight Premium Used unit.
Please mention in the comment field which additional accessories or support you are interested in.
For seperate or post-purchase ordering, please contact your local Keysight office or Keysight Partner.