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Fiber Optical 90º Polarization Modulator/Switch – NanoSpeed™
60ns rise/fall, 500kHz, low loss, bidirectional, 850nm to 1620nm, 0 to 70 °CThe NS Series fiber optical polarization modulator/switch is based on a patented electro-optical configuration, featuring low optical loss and wide temperature operation with built-in compensation. The device dynamically controls the optical phase of the transmitting light, meeting the most demanding requirements of continuous operations over 25 years and non-mechanical ultra-high reliability (passed Telcordia and space qualifications) The device is bidirectional in which the input and output ports are interchangeable.
This device is mounted on a specially designed electronic driver using a 5V TTL control signal through SMA input and a 12V power supply (wall pluggable). The maximum phase change can be adjusted by a pot on the board
SKU: NSPS
Fiber Optical 90º Polarization Modulator/Switch - NanoSpeed™
The NS Series fiber optical polarization modulator/switch is based on a patented electro-optical configuration, featuring low optical loss and wide temperature operation with built-in compensation. The device dynamically controls the optical phase of the transmitting light, meeting the most demanding requirements of continuous operations over 25 years and non-mechanical ultra-high reliability (passed Telcordia and space qualifications) The device is bidirectional in which the input and output ports are interchangeable. This device is mounted on a specially designed electronic driver using a 5V TTL control signal through SMA input and a 12V power supply (wall pluggable). The maximum phase change can be adjusted by a pot on the board| NanoSpeed P Series Switches | Min | Typical | Max | Unit | ||
| Insertion
Loss [1] |
1900-2200nm | 0.8 | 1.8 | dB | ||
| 1260~1650nm | 0.6 | 1.0 | ||||
| 960~1100nm | 0.8 | 1.3 | ||||
| 780-960nm | 1.2 | 1.5 | ||||
| 520 – 680nm | 1.5 | 2.3 | ||||
| IL Temperature Dependency | 0.25 | 0.5 | dB | |||
| Polarization Mode Dispersion (Non PM) | 0.1 | 0.3 | ps | |||
| Return Loss | 45 | 50 | dB | |||
| Polarization State Rotation | 90 | Degree | ||||
| Analog Modulation rate [2] | DC | 50 | 200 | KHz | ||
| Digital Modulation Rate [3] | DC | 1 | MHz | |||
| Optic power
Handling [4] |
Normal power version | 300 | mW | |||
| High power version | 10 | W | ||||
| Operating Temperature | Standard | -5 | 75 | oC | ||
| Special version | -30 | 85 | ||||
| Storage Temperature | -40 | 100 | oC | |||
[1] Measured without connectors.
[2] The phase change is proportionally to the 0-5V control signal
[3] The maximum phase change is set at a predetermined value
[4] Defined at 1310nm/1550nm. For the shorter wavelength, the handling power may be reduced, please contact us for more information.
Q: Does NS device drift over time and temperature?
A: NS devices are based on electro-optical crystal materials that can be influenced to a certain range by the environmental variations. The insertion loss of the device is only affected by the thermal expansion induced miss-alignment. For extended temperature operation, we offer special packaging to -40 -100 0C. The extinction or cross-talk value is affected by many EO material characters, including temperature-dependent birefringence, Vp, temperature gradient, optical power, at resonance points (electronic). However, the devices are designed to meet the minimum extinction/cross-talk stated on the spec sheets. It is important to avoid a temperature gradient along the device length.
Q: What is the actual applying voltage on the device?
A: 100 to 400V depending on the version.
Q: How does the device work?
A: NS devices are not based on Mach-Zander Interference, rather birefringence crystal’s nature beam displacement, in which the crystal creates two different paths for beams with different polarization orientations.
Q: What is the limitation for faster operation?
A: NS devices have been tested to have an optical response of about 300 ps. However, practical implementation limits the response speeds. It is possible to achieve a much faster response when operated at partial extinction value. We also offer resonance devices over 20MHz with low electrical power consumption.
