4×4 High Speed Optical Switch – NanoSpeed™

60ns rise/fall, 500kHz, low loss, bidirectional, 850nm to 1620nm, 0 to 70 °C

The NS Series fiber optic switch is developed for fast switching and low optical loss. This is achieved using patented electro-optical configuration featuring clean fast response without ripples. The NS fiber optic switch meet the most demanding switching requirements of continuous operations over 25 years and non-mechanical ultra-high reliability. The 4×4 configuration combines 5 2×2 NS switches mounted on a single control board with TTL signal inputs.

The NS Series switch is controlled by 5V TTL signals with a specially designed electronic driver having performance optimized for various repetition rate.

SKU: NSSW

4x4 High Speed Optical Switch - NanoSpeed™

The NS Series fiber optic switch is developed for fast switching and low optical loss. This is achieved using patented electro-optical configuration featuring clean fast response without ripples. The NS fiber optic switch meet the most demanding switching requirements of continuous operations over 25 years and non-mechanical ultra-high reliability. The 4x4 configuration combines 5 2x2 NS switches mounted on a single control board with TTL signal inputs. The NS Series switch is controlled by 5V TTL signals with a specially designed electronic driver having performance optimized for various repetition rate.
NanoSpeed 4×4 Switches Min Typical Max Unit
Insertion

Loss [1]

1900-2200nm 3.2 4 dB
1260~1650nm 3 3.5
960~1100nm 4 5
780-960nm 5 6
Cross Talk [2] 45 50 55 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 dB
Return Loss 45 50 60 dB
Optical transition time [3] 100 300 ns
 Repetition Rate   DC 200 kHz
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.