SFMx -Vxx-01x02, SFMx -Vxx-01x04 Multimode Band Couplers
Multimode Band Couplers are ultra reliable devices featuring low backreflection, low insertion loss, and high port isolation over wide ranges of temperature and wavelength. The Multimode Band Couplers are designed to divide and/or combine different optical signals in optical fiber systems. With its innovative Fused Technology process, series SFM Band Couplers have proven to provide exceptional characteristics for all applications demanding critical performance. Splitting ratios can be customer specified in range 1%:99% and 50%:50%. Available in a wide variety of packaging configurations, these SFM series are operable in 850 nm and 1310 nm wavelength range. Various types of pigtailing and connector terminations are available to meet your requirements.
- Low insertion loss
- High port isolation
- Custom defined specifications
- Environmentally stable
Coupling Ratio vs. Insertion Loss:
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Coupling Ratio (%) |
Insertion Loss1 (dB) |
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50 / 50 |
4.0 |
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40 / 60 |
5.0 / 3.0 |
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30 / 70 |
6.2 /2.2 |
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20 / 80 |
8.1 / 1.7 |
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10 / 90 |
11.5 / 1.3 |
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5 / 95 |
16.0 / 0.9 |
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1 / 99 |
22.8 / 0.7 |
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Other ratio |
To be confirmed |
Note: 1) Above specifications are for devices without connector. Add an additional IL refer to connector specification
Performance specifications:
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ITEM |
Multimode Band Couplers |
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Operating Wavelength, nm |
850 or 1310 |
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Operating Bandwidth, nm |
±40 |
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Polarization dependent loss, dB |
≤ 0.15 |
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Directivity, dB |
≥ 55 |
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Coupling Ratio |
1:99 to 50:50, (50:50 standard) |
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Insertion Loss, dB |
Refer to the Coupling ratio vs. Insertion loss chart |
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Operating Temperature2, °C |
-15 to +75 |
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Storage Temperature2, °C |
-40 to +85 |
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Fiber/cable type, µm |
250 |
900 |
900/2000/3000 |
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Package type |
BFS |
LTS |
CP1/CP4 |
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3x35 |
3x54 |
90x20x10/100x80x10 |
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- Fiber optic sensing
- Testing instruments
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SFMX |
- |
Va85 |
- |
01 x XX |
- |
XX |
- |
XXX |
- |
NC-NC |
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SFM5 |
MM 50/125 |
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# port |
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coupling ratio |
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no input and output connectors |
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SFM6 |
MM 62.5/125 |
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01 x 02 |
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connector type: |
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01 x 043 |
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50 |
50/50 |
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-can be defined following CON_13-01 |
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40 |
40/60 |
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(Patchcord Ordering Code) |
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wavelength |
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30 |
30/70 |
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Note: 3) standard fiber/cable length = 1 m |
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20 |
20/80 |
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V85 |
850 nm |
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10 |
10/90 |
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package option I |
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V13 |
1310 nm |
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05 |
5/95 |
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other |
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BFS |
Fiber 250 µm, tube Ø 3 mm, L=35 mm |
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LTS |
Fiber 900 µm, tube Ø 3 mm, L=54 mm |
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FP1 |
Fiber 900 µm, ABS box 90x20x10 mm |
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FP4 |
Fiber 900 µm, ABS box 100x80x10 mm |
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CP1 |
Cable 3 mm, ABS box 90x20x10 mm |
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CP4 |
Cable 3 mm, ABS box 100x80x10 mm |
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package option II |
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CAPM |
OPTOKON cassette |
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RM |
rack mounted unit (MCNP-1U) |
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WM |
wall mounted box (MPIC-4) |
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