3x3 and 2x2 High NA Couplers

Feasa produces a range of Couplers Manufactured from high Numerical Aperture (NA) 80 micron fiber. High NA fiber has low bend attenuation compared to standard singlemode fiber. It has application anywhere the fiber needs to be tightly coiled or is subject to sharp bends or twists. It is suitable for Fiber Optic Gyroscope (FOG) Couplers. For different systems many coupler types are available.

Parameter Specifications
Configuration 3x3, 1x3, 2x2, 1x2
Fiber Type 80um High NA
Fiber Pigtail Length >800m
Operating Wavelength 820nm, 1550nm, other wavelengths
Insertion Loss 3.5dB at 50:50 splitting ratio
Excess Loss 0.25dB
Coupling Ratio 33:33:33, 50:50
Operation Temp -55 to +85 degrees C
Directivity < -65dB
Package Size Standard 45mm x 3mm diameter Miniature 35mm x 3mm diameter


Fiber Gyroscopes
Fiber Sensors
Fiber Test and Measurement
Low Insertion Loss
Enviormentally stable
Long Term Reliability
Compact Design
Available Sleeved and Connectorised