1270nm 1310nm Fiber Collimator For Laser Systems 20mm

The fiber collimator converts scattered light into collimated beams through precise coupling between the lens and the fiber, significantly improving the positioning accuracy and signal stability of the optical system. The core lies in the precise alignment of the lens with the fiber end face (tilt angle<0.5 °), combined with an 8 ° tilt angle (APC type) polishing process, which can effectively suppress end face reflection, with a return loss of ≥ 50dB, ensuring that the beam maintains a low divergence angle (typical value 0.01 °) during long-distance transmission. For example, in high-precision scenarios such as laser processing and medical equipment, this design can reduce optical path offset and improve system response speed and reliability.

The fiber collimator adopts a tight fitting fiber package (outer diameter 0.9mm/2.0mm) integrated with a micro lens (diameter 1mm-2mm), reducing the volume by more than 50% compared to traditional structures. For example, in space limited applications such as drone obstacle avoidance systems and endoscopes, this design can be embedded with narrow optical path modules while maintaining anti vibration performance (mechanical stability up to 0.01mrad). Its compactness also simplifies the installation process, making it suitable for volume sensitive scenarios such as consumer electronics and portable medical devices.

By optimizing the coupling process between the lens and the fiber (such as aberration reduction design for non spherical lenses), the fiber collimator can achieve low insertion loss (≤ 0.3dB) and a transmittance of over 90%. For example, in long-distance transmission scenarios such as 5G base stations and data centers, this design can reduce optical signal attenuation and improve network throughput. Its high return loss (≥ 50dB) characteristic can also reduce reflected light interference, ensure signal integrity, and is suitable for high bandwidth, low latency optical communication networks.

The fiber collimator supports single-mode (1310nm/1550nm) and multi-mode (850nm/1300nm) wavelengths, and can be adapted to WDM wavelength division multiplexing systems through a wide passband AR film design (bandwidth covering the C-band). For example, in complex optical paths such as industrial automation and rail transit, this design can simultaneously process multiple signals to avoid wavelength cross interference. Its multi-core options (single fiber/dual fiber/quad fiber) further expand its application range, meeting diverse needs from home broadband to industrial grade networks.