FBT-1×2-OM4-0.9-LCUPC-70-30
FBT Splitter
1×2 OM4 FBT Splitter, 70/30, LC/UPC, 0.9 mm
Model FBT-1×2-OM4-0.9-LCUPC-70-30 is a 1×2 fused biconical taper (FBT) coupler built with OM4 50/125 µm multimode fiber, a nominal 70/30 split, LC/UPC terminations and 0.9 mm leads. The supplied sample report records measurements at 850 nm. Use this page to confirm the exact model configuration and the RFQ inputs needed for a model-specific datasheet and quotation.
Model FBT-1x2-OM4-0.9-LCUPC-70-30 is a 1×2 fused biconical taper (FBT) coupler built with OM4 50/125 µm multimode fiber, a nominal 70/30 split, LC/UPC terminations and 0.9 mm leads. The supplied sample report records measurements at 850 nm. Use this page to confirm the exact model configuration and the RFQ inputs needed for a model-specific datasheet and quotation.
Primary CTA: Request the model-specific datasheet and quote.
Exact configuration
| Attribute | This model | Evidence status |
|---|---|---|
| BWNFiber model | FBT-1×2-OM4-0.9-LCUPC-70-30 | Supplied source record; mapping to the photographed supplier report requires owner confirmation |
| Device type | 1×2 FBT coupler / splitter | Visible on the sample report |
| Fiber | OM4 50/125 µm multimode | FBT-MM-OM4-850-3070 appears on the sample report |
| Nominal output ratio | 70% / 30% | Visible on the sample report |
| Test wavelength | 850 nm | Visible on the sample report |
| Connector | LC/UPC | Visible in the report part number and product photo |
| Lead protection | 0.9 mm | Visible in the report part number and product photo |
| Package | Compact metal tube | Visible in the supplied product photos; drawing and dimensions required before publication |
Sample measurement shown in the supplied report
The values below are transcribed from the photographed sample report supplied with the source folder. They describe the pictured sample and must not be treated as the guaranteed acceptance limits for every unit until a revision-controlled BWNFiber datasheet or approved inspection specification defines those limits.
| Test wavelength | Output | Nominal share | Reported share | Reported insertion loss | Reported excess loss | Reported return loss | Reported directivity |
|---|---|---|---|---|---|---|---|
| 850 nm | Port 1 | 70% | 70.05% | 1.70 dB | 0.15 dB | ≥35 dB | ≥35 dB |
| 850 nm | Port 2 | 30% | 29.95% | 5.39 dB | — | — | — |
Acceptance note: Confirm the approved limit for each output, the test method, launch condition, connector reference method and whether the reported insertion loss includes the terminated LC/UPC interfaces before releasing a purchase specification.
Where this 70/30 OM4 coupler may fit
This build is intended for an approved 850 nm multimode optical path that needs a fixed unequal power division between a through path and a tap path. Suitability depends on the transmitter launch, receiver power window, modal conditions, connector reference method and total link budget.
Do not substitute this OM4 build for a singlemode PON/FTTH splitter. Do not assume that the output called “70” or “30” maps to a particular route until the port labels and fiber map are approved.
70/30 port assignment and link-budget check
Before ordering, define which physical output must receive the nominal 70% share and which must receive the nominal 30% share. Then calculate each route with the approved model limits, connector allowances and any additional splices or adapters. The sample measurement above is useful evidence for the pictured unit; it is not a replacement for the project acceptance specification.
Information to include in the RFQ
Send the following information with the model number:
- Required input and output port assignment, including which route receives 70% and which receives 30%.
- Operating wavelength and transmitter type.
- OM4 50/125 µm confirmation and the surrounding link type.
- Maximum acceptable insertion loss for both outputs.
- Connector reference method and LC/UPC interface plan.
- Required lead length, 0.9 mm lead protection and package dimensions.
- Labeling, port identification and test-record requirements.
- Quantity, sample requirement and requested document pack.
Documents to request before approval
- Revision-controlled model datasheet
- Package drawing with dimensions and lead lengths
- Port map and label convention
- Model-specific optical acceptance limits and test method
- Sample approval record, if the project requires one
- Unit or batch test record for the ordered configuration
- Packaging and identification requirements
FAQ
1×2 OM4 FBT Splitter, 70/30, LC/UPC, 0.9 mm FAQ
What is FBT-1×2-OM4-0.9-LCUPC-70-30?
It is the proposed BWNFiber model identifier for a 1×2 OM4 multimode FBT coupler with a nominal 70/30 split, LC/UPC terminations and 0.9 mm protected leads.
Which port receives 70% of the optical power?
The supplied sample report lists Port 1 as the 70% output and Port 2 as the 30% output. The physical fiber labels and port map still need to be confirmed for the released model.
At what wavelength was the supplied sample measured?
The supplied report shows measurements at 850 nm.
What insertion loss was recorded for the sample?
The report shows 1.70 dB for the nominal 70% output and 5.39 dB for the nominal 30% output at 850 nm. These are sample results, not yet verified guaranteed model limits.
Does the reported insertion loss include the LC/UPC connectors?
The photographed part number identifies an LC/UPC-terminated assembly, but the report does not explicitly define the reference method or connector treatment. Confirm this point in the approved test method before using the values in a link budget.
Is this the same as a singlemode FBT splitter for PON?
No. This model is identified as OM4 multimode and the supplied report is at 850 nm. A singlemode PON build uses different fiber and wavelength requirements.
Can the 70/30 designation be written as 30/70?
Both conventions appear in the market. Use the physical port assignment and model-controlled port map, not the order of the ratio alone, to avoid reversing the through and tap paths.
Is the photographed 0.12 m lead length the standard order length?
Not yet confirmed. The report part number includes 0.12M, which appears to describe the pictured sample. The released model datasheet must define the orderable input and output lead lengths.
When should a buyer choose FBT rather than PLC?
FBT is commonly considered for small port counts and unequal ratios. PLC is commonly used for broader, near-uniform multiport splitting. The choice still depends on wavelength, fiber mode, optical budget, package and acceptance requirements.
What should I send to request a quote?
Send the model number, wavelength, link diagram, 70/30 route assignment, allowable loss for each output, lead lengths, connector plan, package constraints, quantity and required test documents.
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