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Description ATOP adopts the FBT technique to produce the SM coupler with the high performance and liability which achieve the advanced level of similar products in the world. The extremely low excess loss greatly increases the coupler’s liability and long-term stability. We adopts the unique craft to eliminate the reflection of the 1x2 coupler’s spare input fiber and ensure its long-term stability and at least 60dB directivity. ATOP also supply the 1xN (NxN) Tree/Star type coupler by grade-connection 1x2 coupler. Feature Low PDL Low Excess Loss Good Directivity Good environmental Stability Standard/Flattened/Broadband/Star/Tree Application Optical Fiber Communication Systems Optical fiber access network Optical Fiber CATV Optical fiber test equipment Optical Amplifiers Monitoring Systems Optical Fiber Sensor Specification Type Standard Dual-Windows Broadband Single-Window Broadband Central Wavelength(nm) 1310 or 1550 1310/1550 1310/1550 Bandwidth (nm) ±20 ±40 ±40 Star Structure 4*4 8*8 16*16 4*4 8*8 16*16 4*4 8*8 16*16 Tree Structure 1*4 1*8 1*16 1*4 1*8 1*16 1*4 1*8 1*16 Typical Insertion Loss(dB) 6.3 9.5 13.0 6.6 9.6 13.2 6.6 9.6 13.2 uniformity(dB) 0.7 1.0 1.3 1.5 2.2 3.0 0.9 2.8 3.7 PLD(dB) ≤0.10 Min Directivity(dB) ≥60 Operating Temperature(℃) -40~+75 Storage Temperature(℃) -40~+85 Packing Type Customers specify Industry Standard Telcordia GR-1221-CORE Standard Dimension Type(mm) 1.φ3.0x50 2.90x20x9 3.100x80x10 4.120x80x18 5.140x114x18