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20 MHz Fiber Optical Modulator/Switch 1×1, 1×2, 2×2 – NanoSpeed™
Fixed MHz Repetition Rate, 500nm to 2000nmThe NS Series fiber optic modulator features fast amplitude modulation about 20 Mhz, low driving voltage and low optical loss. This is achieved using a patented electro-optical configuration and operating at a fixed frequency with a built-in high Q resonant circuit. Unlike other modulators, we use special electro-optical crystals of high stability that increase power handling and reduce drift/darkening. The NS fiber optic switch meet the most demanding switching requirements of continuous operations over 25 years and non-mechanical ultra-high reliability.
Our resonant EO phase modulators can be driven by a standard laboratory function generator with a Half-Wave Drive Voltage of only 15 V at 633 nm.
Custom versions are also available, with user-specified resonant frequencies from 0.1 to 100 MHz.
SKU: NSRM
20 MHz Fiber Optical Modulator/Switch 1×1, 1×2, 2×2 – NanoSpeed™
The NS Series fiber optic modulator features fast amplitude modulation about 20 Mhz, low driving voltage and low optical loss. This is achieved using a patented electro-optical configuration and operating at a fixed frequency with a built-in high Q resonant circuit. Unlike other modulators, we use special electro-optical crystals of high stability that increase power handling and reduce drift/darkening. The NS fiber optic switch meet the most demanding switching requirements of continuous operations over 25 years and non-mechanical ultra-high reliability. Our resonant EO phase modulators can be driven by a standard laboratory function generator with a Half-Wave Drive Voltage of only 15 V at 633 nm. Custom versions are also available, with user-specified resonant frequencies from 0.1 to 100 MHz.NanoSpeed Resonant Modulator | Min | Typical | Max | Unit | |||
Insertion
Loss [1] |
1900-2200nm | 1.3 | 1.9 | dB | |||
1260~1650nm | 1 | 1.5 | |||||
960~1100nm | 1.5 | 2 | |||||
780-960nm | 1.7 | 2.2 | |||||
Cross Talk [2] | 18 | 20 | 35 | dB | |||
PDL (SMF Switch only) | 0.15 | 0.3 | dB | ||||
PMD (SMF Switch only) | 0.1 | 0.3 | ps | ||||
ER (PMF Switch only) | 18 | 25 | dB | ||||
IL Temperature Dependency | 0.25 | 1.5 | dB | ||||
Return Loss | 45 | 50 | 60 | dB | |||
Repetition Rate | 20 | 100 | MHz | ||||
Optic power
Handling [4] |
Normal power version | 300 | mW | ||||
High power version | 5 | W | |||||
Operating Temperature | Standard | -5 | 75 | oC | |||
Large range version | -30 | 85 | |||||
Storage Temperature | -40 | 100 | oC | ||||
[1] Measured without connectors. For other wavelengths, please contact us.
[2] Cross talk is measured at 100kHz, which may be degraded at the higher repeat rate.
[3] It is defined as the rising or fall time between 10% and 90% of optical intensities.
[4] Defined at 1310nm/1550nm. For the shorter wavelength, the handling power may be reduced, please contact us for more information.
High power version available by incorporating fiber core enlargement (expensive).
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.