Контроллер поляризации N7784B
Optical characterization needs the control of the state of polarization (SOP) in various ways. The N7784B provides alignment and fast stabilization of polarization into polarization maintaining fiber or with respect to an external feedback.
Характеристики
Производитель
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Keysight Technologies
Модель
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N7784B
Контроллер поляризации N7784B
HIGHLIGHTS
Key Benefits
As Polarization Stabilizer it provides a stable output State of Polarization (SOP) even with fluctuations and drifts of the input SOP as occurring for example through temperature drift and mechanical settling processes. The stabilized output signal is guided in a Polarization Maintaining Fiber (PMF). Alternatively an external electrical feedback signal can be provided for stabilizing the SOP.
As Synchronous Scrambler the device switches the SOP of the output signal in a (pseudo) random way. Switching of the SOP occurs within few microseconds. The SOP is stable for a predefined time until it again switches to a new SOP. An electrical trigger input can be used to synchronize the scrambler with external events.
As SOP Switch the Keysight N7784B switches to a set of SOPs with high repeatability which allows customized implementations of the Mueller Matrix method for PDL characterization of components.
As traditional Scrambler the Keysight N7784B varies the output SOP smoothly in a random/pseudo random way.
The unit does not contain any moving parts and therefore is robust and withstands even rough environmental conditions. All abovementioned applications of the N7784B are supported by a PC software package.
Key Benefits
- Comprehensive Polarization Control and Management Capabilities
- Covers S-, C- and L-Band plus 1.3μm Window (O-Band)
- Up to 100K SOPs/s
- SOP Switching time less than 10us
As Polarization Stabilizer it provides a stable output State of Polarization (SOP) even with fluctuations and drifts of the input SOP as occurring for example through temperature drift and mechanical settling processes. The stabilized output signal is guided in a Polarization Maintaining Fiber (PMF). Alternatively an external electrical feedback signal can be provided for stabilizing the SOP.
As Synchronous Scrambler the device switches the SOP of the output signal in a (pseudo) random way. Switching of the SOP occurs within few microseconds. The SOP is stable for a predefined time until it again switches to a new SOP. An electrical trigger input can be used to synchronize the scrambler with external events.
As SOP Switch the Keysight N7784B switches to a set of SOPs with high repeatability which allows customized implementations of the Mueller Matrix method for PDL characterization of components.
As traditional Scrambler the Keysight N7784B varies the output SOP smoothly in a random/pseudo random way.
The unit does not contain any moving parts and therefore is robust and withstands even rough environmental conditions. All abovementioned applications of the N7784B are supported by a PC software package.
Документы
| Wavelength | ||
| Operating wavelength range | 1260 to 1640 nm | |
| Wavelength range in stabilizer mode 2 | 1520 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) 3 | 2 ms | |
| Optical power | ||
| Insertion loss port I to port II 4 | < 3.5 dB (< 3.0 dB, typical) | |
| Insertion loss port III to port IV 5 | < 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 to 0 dBm |
| Ordering instructions Optical connector options | ||
| N7784B-021 | Straight contact connectors | |
| N7784B-022 | Aangled contact connectors | |
| Connector interface | ||
| The N7784B should usually be ordered with four 81000xI connector interfaces, depending on desired connector type (not included). | ||
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Accessories |
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| 5063-9240 | Rack mount kit for 1 unit with filler panel | |
| 5063-9212 + 5061-9694 | Rack mount parts for 2 units side-by-side | |
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Calibration Select Keysight calibration plan |
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| R-50C-011-3 |
3-year calibration assurance plan (return to Keysight): Priority calibration service covering all calibration costs for 3 years; 15% cheaper than buying stand-alone calibrations. |
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5-year calibration assurance plan (return to Keysight): Priority calibration service covering all calibration costs for 5 years; 20% cheaper than buying stand-alone calibrations. |
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| General characteristics | ||
| Dimensions (D x W x H) | 380 x 213 x 88 mm (excluding front and back rubber cushions and handle) | |
| Weight | Approx. 4 kg | |
| Recommended recalibration period | 24 months | |
| Operating temperature |
+5 to +40°C |
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| Operating humidity | 0 to 80%, non-condensing | |
| Altitude | The maximum operating altitude is 2000 m. | |
| Pollution protection | Pollution degree 2. | |
| Warm-up time | 20 minutes | |
| Interfaces | The instruments can be controlled via USB or GPIB interfaces | |
| Power consumption | Line power: AC 100 to 240 V ±10%, 50/60 Hz, 60 VA max. | |
2. Outside the stabilizer wavelength range, the PER at PMF output may be degraded.
3. Input power at port III > –30 dBm, response to an immediate step of 180° on the Poincaré sphere.
4. For SOP scrambling/switching, only ports I/II are used.
5. Valid for optimum input polarization at PBS input (Port III). Add insertion loss of port I/II and obtain total insertion loss for SOP stabilizing mode.