Flexible Optical Fiber with 1×2 Optical Fiber Coupler for He-Ne Laser

Product Overview

This Flexible Optical Fiber Assembly with Integrated 1×2 Single-Mode Fiber Coupler is specifically designed for Helium-Neon (He-Ne) lasers operating at 632.8 nm. The assembly enables efficient splitting or combining of the He-Ne laser beam while providing the flexibility to remotely deliver the optical output, isolating sensitive instrumentation from laser-generated heat and vibration .

The system consists of a high-quality single-mode fiber optic cable coupled to a fused biconical taper (FBT) 1×2 coupler, optimized for 633 nm operation. The flexible fiber delivery eliminates the need for bulky free-space optics, simplifies instrument design, and allows the laser source to be positioned remotely from the application . This assembly is ideal for applications requiring beam splitting, power monitoring, or multi-point delivery from a single He-Ne laser source.

Key Features

• He-Ne Laser Optimized: Specifically designed for 632.8 nm wavelength with single-mode fiber for preserving beam quality

• 1×2 Configuration: Splits one input into two outputs (or combines two inputs into one output, bi-directional operation)

• Flexible Fiber Delivery: Enables remote laser placement, removing heat and vibration from sensitive instrumentation

• High Coupling Efficiency: Achieves up to 70-90% coupling efficiency when properly aligned with the He-Ne laser

• Low Insertion Loss: Optimized fused coupler design with <3.7 dB typical insertion loss

• Multiple Coupling Ratios: Available in 50:50, 75:25, 90:10, or 99:1 split ratios

• Preserves Beam Quality: Single-mode fiber transmits a nearly Gaussian profile, suppressing higher-order modes

• Enhanced Pointing Stability: Reduces beam pointing instability to <1 μrad/°C, regardless of laser source

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