Beam Expander
Product description
In response to the demand for higher power optics, IDIL provides expanded beam connectors. These connectors increase the beam waist, reducing power density at the connection point and enhancing performance in high-power applications. These connectors are based on graded index expanded beam micro lenses. By welding single mode fiber and the right length of graded index fiber, these connectors allow high power handling capacity and low insertion losses.
Moreover, their small size and the high contamination tolerance make them very useful in a large spectrum of applications. Our single mode graded index expanded beam connectors are resistant to water, dust and oil. These connectors are available in FC and Elio contact.
- High power handling capacity (3W typical)
- Low insertion loss
- Low return loss
- Small size
- Reliable optical performance in harsh environment
- Multipoint connectors (up to 24)
SPECIFICATIONS
| Beam expander | |
| Insertion loss | 0.4dB typical / 0.6dB max |
| Return loss | -50db (0° polished with contact)-60dB max (with APC) |
| Optical power handling | 3W typical (10W max) |
| Beam diameter | From 20 to 35µm typical (higher on demand) |
| Connectors | FC or Elio contact |
| Ferrule type | PC (APC possible for beam diameter = 25µm) |
| Operating temperature | From -20°C to +85°C |
APPLICATIONS
- Telecommunications
- Fiber optic instrumentation
- Medical & Biotech
- Aerospace & Space
- Switches
- Laser diode coupling
- Optical waveguide coupling
FOCUSING CAPABILITY
GRIN is often used to focus or collimate light in optical systems. The gradual change in refractive index helps in achieving this without the need for multiple lens elements.
Image: Calculation of beam waist and working distance based on the analytical method and BPM (Beam Propagation Method)
LOW SENSITIVITY TO MISALIGNMENT
One of the key features of expanded beam connectors is their reduced sensitivity to alignment issues. This makes them suitable for applications where frequent connection and disconnection may occur, such as in field deployments.
Image: Calculation of 55µm beam waist coupling losses for different angular misalignments and axial gap related to lateral offset
LOW INSERTION LOSS
Expanded beam connectors aim to minimize insertion loss. Their small size and the high contamination tolerance make them very useful in a large spectrum of applications. Our SMF-GIF connectors are more resistant to water, dust and oil than SMF.
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