4×4 High Speed Optical Switch – NanoSpeed™

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

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.

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).

 

 

Spec Sheet (PDF)

Mechanical Drawing

Driver Software


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.

Drivers