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| Coad | 666500 | Type | 2x2 Single-Mode Fiber Coupler | |
| Wavelength(nm) | 405 | Connector Type | FC/UPC | |
| Fiber Model | 405-HP 900µm Loose Hytrel® Tube | Fiber Length（m） | 1 | |
| Central Wavelength | - | Bandwidth | ±10nm | |
| Operating Temperature | -40 - 85℃ | Storage Temperature | -40 - 85℃ | |
| Operating Mode | - | Splitting Ratio | 10:90 | |
| Extinction Ratio | - | Insertion Loss | ≤2.5dB（Port1）≤12.2dB（Port2） | |
| Return Loss | ≥55dB | Excess Loss | ≤2.0dB | |
| Polarization-Dependent Loss | ≤0.2dB | Polarization Mode Dispersion | - | |
| Directionality | - | Package Size | 3.0 x 60.0mm | |
| Uniformity | - | Isolation | - | |
| Maximum Optical Power | 100mW(with connector50mW) | Maximum Tension | 5N | |
| Minimum Crosstalk | - | Rotation Angle | - | |
| Port Configuration | 2 x 2 | |||
The LBTEK 2×2 single-mode fiber coupler is fabricated using fused biconical taper (FBT) technology, which allows optical signals propagating in the fibers to couple within a specially designed coupling region, distributing optical power according to a predetermined ratio. LBTEK fiber couplers cover a wavelength range of 405–2000 nm and feature low insertion loss, low excess loss, high return loss, and excellent stability. They are widely used in fiber communications, underwater laser communications, fiber lasers, and fiber amplifiers. LBTEK offers a variety of customization options, including different coupling structures (1×2, 1×4, 2×2, etc.), power ratings, wavelengths, coupling ratios, and connector types. For specific customization requirements, please contact us.
The LBTEK 1:99 single-mode fiber coupler can distribute optical power from two input fibers to two output fibers in a 1:99 ratio. It is primarily used for optical path monitoring in optical systems, allowing a small portion of light to be extracted and analyzed to monitor the quality of the main optical path. The coupler provides precise splitting ratios, low excess loss, high return loss, and stable performance.
The LBTEK 50:50 single-mode fiber coupler can distribute optical power from two input fibers to two output fibers evenly in a 50:50 ratio. It is mainly applied in optical path monitoring to extract and verify a small portion of light, ensuring the main optical path maintains optimal beam quality. It offers precise splitting ratios, low excess loss, high return loss, and stable operation.
The LBTEK 10:90 single-mode fiber coupler can distribute optical power from two input fibers to two output fibers in a 10:90 ratio. It is suitable for optical path monitoring, allowing partial light extraction for quality verification of the main optical path. The coupler features accurate splitting ratios, minimal excess loss, high return loss, and stable performance.
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