High Speed Variable Fiber Optical Attenuator (8 Channels)

  • Solid-State
  • High speed
  • Ultra-high reliability
  • Low insertion loss
  • Compact



The NS Series Variable Fiber Optical Attenuator (VOA) provides electrical control of optical power. This is achieved using a patent-pending non-mechanical configuration and activated via a voltage electrical control signal. The solid-state optical crystal design eliminates mechanical movement and organic materials. The NS Series Variable Optical Attenuators are designed to meet the most demanding operational requirements of ultra-high reliability and fast response time with minimal mechanical footprint. Photonwares also offers customized electronic designs to meet special control requirements and applications. The switch is bidirectional. The NS Series VOA is available in either normally-transparent or normally-opaque configurations.
The array is mounted on a PCB driver board with a wall-plug 12VDC power supply and a 0-5V control signal input.


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NanoSpeed Series VOA Aray Min Typical Max Unit
Central wavelength [1] 780 1650 nm
Insertion Loss [2]  1260~1650nm 0.6 1.0 dB
960~1100nm 0.8 1.3
780~960nm (Normal power VOA only) 1.0 1.5
Attenuation Range 20 28 36 dB
PDL (SMF VOA only) 0.1 0.3 dB
PMD (SMF VOA only) 0.1 0.3 ps
ER   (PMF VOA only)       18  25 dB
Resolution Continuous dB
Return Loss 45 50 60 dB
Response Time (Rise, Fall) 30 300 ns
Fiber Type SMF-28, Panda PM, or equivalent
Repeat Rate 5kHz driver DC 5 kHz
100kHz driver DC 100
Modulation rate [3] 0.1 5 MHz
Optic power Handling [4] Normal power  VOA 300 mW
High power VOA 5 W
Operating Temperature[5] -5 70 oC
Storage Temperature -40 85 oC
[1] Operation bandwidth is +/- 25nm approximately at 1550nm. [2] Measured without connectors. For other wavelength, please contact us. [3] Special circuit for narrow frequency range, maximum modulation depth is 5~10%. [4] Defined at 1310nm/1550nm. For the shorter wavelength, the handling power may be reduced, please contact us for more information. [5] -40 premium version is also available.