Variable Fiber Optical Splitter/Coupler

(1x2, 2x2, SM, PM)
  • High Speed
  • High Reliability
  • Low Insertion Loss
  • Compact



The Variable Fiber Optical Splitter splits an incoming optical signal among two output optical fibers with a continuously variable ratio controlled by an electrical input voltage from 0 to 5V. When the electrical control signal is at zero, the splitter is at a standard version of 100:0; and changes to 0:100 when the input signal is 5V.  The zero voltage ratio can be made at any pre-determined ratio with special orders.   The device is bidirectional, transmitting light in both directions simultaneously. The all-solid-state crystal design eliminates the need for mechanical movement. The Variable Fiber Optic Splitter has passed highest reliability qualifications, including Telcordia and mill-spec.   It is designed to meet the most demanding requirements of ultra-high reliability, fast response time, and continuous operation.

The unit is mounted on a driving board having a control signal input SMC connector and a wall plug-in power supply. Available with several electronic drivers having performance optimized for various repetition rates.


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Variable Fiber Optical Splitter  Min Typical Max Unit
Central Wavelength 450 2000 nm
Insertion Loss[1] 1260~1650nm 0.6 1 dB
900~1260nm 0.8 1.3 dB
760~900nm 1 1.5 dB
650 -850 1.5 1.9 dB
450-580 2 2.5 dB
Cross Talk at 100% splitter [2] 20 25 35 dB



Output 1 100~0 %
Output 2 0~100 %
Type Continuous
Response Time (Rise, Fall) 1000 Ns
Repetition Rate [3] DC 20 100 kHz
Polarization Dependent Loss   0.1 0.35 dB
IL Temperature Dependency 0.25 0.5 dB
Polarization Mode Dispersion 0.1 0.2 Ps
Return Loss 45 50 60 dB
Operating Temperature -5 70 oC
Optical Power Handling [3] 300 mW
Storage Temperature -40 85 oC
Package Dimension 65.8×8.5×8.4 mm

[1] Excluding connectors.

[2] Cross talk is measured at 5kHz, which may be degraded at the high repeat rate.

[3] High repetition rate (up to 100 kHz) is available.

[3] Defined at 1310/1550nm. For the shorter wavelength, the handling power may be reduced.