Ruik's Fused couplers are used to split optical signals between two fibers or to combine optical signals from two fibers into one fiber. They are constructed by fusing and tapering two fibers together. RUIK's fused couplers are available in a range of wavelengths, fiber sizes, and splitting ratios. The fiber ends can be terminated with a variety of fiber connectors. Standard configurations are 1x2 and 2x2 couplers. N by M fused couplers, such as 1x3, or 1x4,etc., are also available on request. Fused PM Fiber Standard Coupler Features Applications High Power Handling Coherent Communication Low Insertion Loss Power Monitor High Stability & Reliability Fiber Sensor Specifications Parameter Unit Value Center Wavelength nm 1550 Operating Bandwidth nm �20 Max. Excess Loss dB 0.8 Min. Extinction Ratio dB 18 Min. Directivity dB 50 Max. Return Loss dB 55 Max. Optical Power(CW) W 1 Fiber Type - PM 1550 fiber / HI1060 Package Dimension mm �?3*54 Operating Temperature -5~+75 Storage Temperature -40~+85 Splitting Ratio Tolerance 50/50 % �4.8 40/60 % �3.9 30/70 % �2.5 20/80 % �2.3 10/90 % �2.1 5/95 % �1.4 1/99 % �0.5 Company introduction; High power Optical Fiber Components: -Optical Fiber Isolator, up to 100W; -Free Space Isolator, up to 100W; -Optical Circulator, up to 30W; -Pump Laser Protector; -Band Pass Filter; -Nx1 Pump Combiner; -Cladding Power Stripper; -Mode Field Adapter; -(N+1)x1 Pump & Signal Combiner, 200W/port; Polarization Maintaining Fiber Components: -In-Line Polarizer/Depolarizer; -In-Line Faraday Isolator; -Optical Circulator; -Fused WDM / Coupler; -Filter WDM / Coupler; -Fiber DWDM -Fiber Mirror; -Faraday Rotator; -Fiber Patchcord / Jumper; -PLC Splitter Module; -Tap / WDM / Isolator Hybrid; Manual Variable Optical Attenuator; -1x2 Polarization Beam Splitter / Combiner (PBS/C) -1x2 Isolator & Polarization Beam Splitter / Combiner (IPBS/C)