China MULTIIR BiDi Filter: Leading Suppliers & Factory for Single-Fiber Bidirectional Optical Communication
| Name | Op. Wavelength Range (nm) | Center λc (mm) | Center λc Accuracy (nm) | Passband (nm) | Reflect. Band (nm) | Peak IL (dB) | Passband Ripple (dB) | Passband Reflect. Isol. (dB) | Reflect. Band Transm. Isol. (dB) | Incid. Angle (°) | Passband PDL (dB) | Op. Temp. (°C) | λ Thermal Drift △λ/△T (pm/°C) | Dimensions (mm) | Backside AR Coating | Spectrogram |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| BI-DI | 1260-1550 | Comply with the standards of the ITU | - | 1450-1550 | 1260-1360 | ≤0.2 | - | - | ≥40 | 0° | <0.1 | -40℃~+85℃ | <2 | 1.75(±0.05)×1.5(±0.05)×0.2(±0.05) | Reflectivity 0.2% |
|
| BI-DI | 1260.0-1550 | Comply with the standards of the ITU | - | 1460-1580 | 1260-1360 | ≤0.2 | - | - | ≥30 | 45° | <0.1 | -40℃~+85℃ | <2 | 1.75(±0.05)×1.5(±0.05)×0.2(±0.05) | Reflectivity 0.2% |
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| BI-DI | 1260.0-1550 | Comply with the standards of the ITU | - | 1260～1360 | 1460～1580 | ≤0.2 | - | - | ≥30 | 45° | <0.1 | -40℃~+85℃ | <2 | 1.75(±0.05)×1.5(±0.05)×0.2(±0.05) | Reflectivity 0.2% |
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| BI-DI | 1260-1550 | Comply with the standards of the ITU | - | 1260-1360 | 1450-1550 | ≤0.2 | - | - | ≥40 | 0° | <0.1 | -40℃~+85℃ | <2 | 1.75(±0.05)×1.5(±0.05)×0.2(±0.05) | Reflectivity 0.2% |
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The above list shows our current stock items.
If you don't see what you are looking for, please contact us.
Frequently Asked Questions (FAQ)
BI-DI (Bi-Directional) optical filters are critical components used in single-fiber bi-directional optical transceivers and WDM systems to effectively separate and combine transmitting (Tx) and receiving (Rx) optical wavelengths on a single fiber core.
Our standard stock BI-DI filters are engineered for both 0° normal incidence and 45° angle of incidence (AOI), making them suitable for in-line transmission or 45-degree beam-splitting optical block configurations.
These filters feature an ultra-wide operating temperature range of -40℃ to +85℃ with a wavelength thermal drift of <2 pm/℃, guaranteeing reliable stability in industrial and outdoor telecommunication environments.
Yes, all center wavelengths and spectral band separations are designed and manufactured in full compliance with International Telecommunication Union (ITU) standards.
Yes. In addition to our stock standard dimension of 1.75(±0.05) × 1.5(±0.05) × 0.2(±0.05) mm with backside AR coating (Reflectivity ≤0.2%), custom dimensions, substrate thicknesses, and specific passband cutoffs can be tailored on request.