The Agilent/Keysight N7784B is a high-speed polarization controller designed for precise management of the state of polarization (SOP) in optical systems. It operates across S-, C-, and L-Bands, as well as the 1.3 µm window (O-Band). This instrument offers versatile functionality, acting as a polarization stabilizer, synchronous scrambler, SOP switch, or traditional scrambler. Its robust design, featuring no moving parts, ensures durability in various environmental conditions. The N7784B is supported by PC-based application software, enhancing its ease of use and flexibility in advanced optical testing and characterization scenarios.
### Technical Specifications
**Wavelength:**
* Operating wavelength range: 1260 nm to 1640 nm
* Wavelength range in stabilizer mode: 1520 nm to 1580 nm
**Polarization Control and Stabilization:**
* SOP switching time (open-loop): < 10 µs
* PER at PMF output (typical): > 23 dB
* Stabilizer response time (typical): 2 ms
**Optical Power:**
* Insertion loss port I to port II: < 3.5 dB (< 3.0 dB, typical)
* Insertion loss port III to port IV: < 1.8 dB (< 1.4 dB, typical)
* PDL port I to port II (typical):
* C/L-Band: < 0.2 dB
* O-Band: < 0.5 dB
* Maximum safe input power:
* Port I: 20 dBm
* Port III: 3 dBm
* Input power range in stabilizer mode (Port III): -30 dBm to 0 dBm**Operational Modes:**
* **Polarization Stabilizer:** Provides a stable output SOP, mitigating fluctuations and drifts from temperature changes or mechanical settling. The stabilized signal is directed into a Polarization Maintaining Fiber (PMF). An external electrical feedback signal can also be utilized for stabilization.
* **Synchronous Scrambler:** Switches the output SOP in a random or pseudo-random manner within microseconds. The SOP remains stable for a defined period before transitioning to a new state. An electrical trigger input allows synchronization with external events.
* **SOP Switch:** Enables switching between user-definable angles of internal waveplates with high speed and repeatability. This function is suitable for implementing the Mueller Matrix method for polarization-dependent loss (PDL) characterization.
* **Traditional Scrambler:** Varies the output SOP smoothly in a random/pseudo-random fashion.**Performance:**
* Up to 100K SOPs/s**Interfaces:**
* USB
* GPIB**Physical Characteristics:**
* Dimensions (D x W x H): 380 x 213 x 88 mm (excluding front and back rubber cushions and handle)
* Weight: Approximately 4 kg
* Recommended recalibration period: 24 months**Environmental Conditions:**
* Operating temperature: +5 °C to +40 °C
* Operating humidity: 0% to 80%, non-condensing
* Maximum operating altitude: 2000 m
* Pollution protection: Pollution degree 2**Power:**
* Line power: AC 100 to 240 V ±10%, 50/60 Hz, 60 VA max**Warm-up Time:**
* 20 minutes**Included Software:**
* PC-based application software is included for all supported applications.
* Other instrument drivers for various software interfaces are available.### Why Choose Aumictech for Agilent/Keysight N7784B?At Aumictech, we specialize in supplying high-performance optical test and measurement equipment. Whether you need precise polarization control for component characterization, stable SOP for system verification, or rapid SOP switching for dynamic testing, our team ensures the Agilent/Keysight N7784B delivers maximum performance for your application.
