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The Optic-fiber Tree and Star Couplers can couple the optical signals in the coupling area, and then re-distribute the light power. The key parameters include operating wavelength, bandwidth, and excess loss, coupling ratio, PDL and so on. Shenzhen Lightwit photonics coupler Tree/Star Type couplers are be-directional devices that split or combine light with minimal loss and excellent uniformity. Our couplers come with your choice of different customers the best quality products, our couplers are made to conform Bellcores standard in terms of optical characteristics, mechanical testing, and reliability, etc.
Key Features:
◆Low excess loss
◆Low PDL
◆High performance
◆Excellent uniformity
◆Good directivity
◆Compact size
◆High directivity
◆Environmental stability and reliability
Applications:
◆Optical fiber communication systems
◆Optical access networks/LAN
◆Optical amplifiers(OA)
◆Optical fiber CATV
◆Monitoring systems
◆Optical fiber sensor
◆Source distribution
Technical Parameters:
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Wavelength(nm)
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1310 or 1550nm SM
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850 or 1310nm MM
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Notes
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Bandwidth(nm)
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±20nm
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±40nm
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Insertion Loss
(dB)
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6.9
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7.5
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N*4(N=1,2,4)
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10.3
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11.2
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8.4
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N*8(N=1,2,4)
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13.8
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15
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13.5
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N*16(N=1,2,4)
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Excess Loss
(dB)
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0.35
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0.40
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N*4(N=1,2,4)
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0.55
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0.65
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N*8(N=1,2,4)
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0.75
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0.90
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N*16(N=1,2,4)
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Thermal Stability(dB/)
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≤0.003
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≤0.003
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≤0.003
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Polarization
Dependent
Loss(dB)
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0.24
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0.30
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N*4(N=1,2,4)
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0.36
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0.45
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N*8(N=1,2,4)
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0.48
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0.60
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N*16(N=1,2,4)
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Homogeneity(dB)
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1.8
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1.8
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N*4(N=1,2,4)
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2.7
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2.7
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1.0
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N*8(N=1,2,4)
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3.6
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3.6
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1.9
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N*16(N=1,2,4)
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Directivity(dB)
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≥50
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Operation Temperature(℃)
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-40~+80
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Storage Temperature(℃)
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~40~+85
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Package Dimensions(mm)
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A: f3.0´55(L) (250mm bare fiber)
B: f3.0´55(L) (0.9mm loose tube)
C: 90(L)´15(W)´7(H) (0.9mm loose tube)
D: 105.2(L) ´ 78.5(W) ´12.7(H) (0.9mm loose tube)
E:90(L)´15(W)´7(H)( f3.0mmPVC tube)
F: 105.2(L) ´ 78.5(W) ´12.7(H)(f3.0mmPVC tube)
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G: 141.5(L) ´101.7(W) ´14.8(H)(f3.0mmPVC tube)
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Ordering infromation:
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No.
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Mode
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Central Wavelength
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Input/Output port
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Rate
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Pigtail length
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Package
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LW-SWC-
/LW-DWC-
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SC=Single mode standard,
WFC=Single window bandwidth
WIC=Dual window bandwidth
MSC=Multi mode standard
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3=1210nm,
5=1550nm,
8=850nm,
35=1310&1550
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1/2,
1/3,
….
1/32,
2/2,
2/4,
……
2/32
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1/99,
……
50/50
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1=1M,
2=2M
……
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A:μ3.0*55（L）（250u bare fiber）
B: μ3.0*55(L)(900u loose tube)
C: 90(L)*15(W)*7(H)(900u loose tube)
D:105.2(L)*78.5(W)*12.7(H)(900u loose tube)
E:90(L)*15(W)*7(H)(μ3.0mm PVC tube)
F:105.2(L)*78.5(W)*12.7(H)( μ3.0mm PVC tube)
G:141.5(L)*101.7(W)*14.8(H)( μ3.0mm PVC tube)
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For drawings, technical data or samples configuration other than stated above, please feel free to contact us: sales@lightwit.com.cn
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