SILICAGRIN-Catalog
SILICAGRIN Collimator
Beam Shape Thin and Long
Features
- Beam diameter and beam waist distance can be selected with a wide variety of NA options (graph on the right).
- Suitable for visible to near-infrared wavelengths.
- Custom design available
- Fiber: SMF, PMF, MMF and MCF
- Zirconia/metal ferrule processing, etc.
- AR coating, fiber metallization processing
Applications
Fiber probes for selective ablation, vaporization, and other treatments.
| Typical Beam Shape | |
| Beam-Waist Distance (mm) | Beam-Waist Diameter (μm) |
| 1.5 | 50 |
| 1.0 | 36 |
| 0.5 | 20 |
Lens Diameter: 125 μm, Wavelength: 1550nm,
Optical Fiber: SMF (MFD: 10.4 μm)
For non-physical contact connection applications in
DIRTY/CLEAN areas of medical optical fiber catheters
| Typical Coupling Performance | |
| Insertion Loss (Ave.) | 0.5 dB |
| Return Loss (Ave.) | 35 dB |
Average value of every 90 degree rotation (See left)
WD=1.0mm, Wavelength: 1550nm,
PC Polished with AR coating
SILICAGRIN LEC (Lateral Emitting Collimator)
Beam Shape Thin, Long, and Lateral
Features
- A light beam with a calculated beam diameter and beam waist distance is emitted from the side of the lens. Incidence and collection of light from the side is also possible.
- In comparison with other side-emitting technologies such as ball lenses, it is significantly smaller and can be mass-produced.
- Suitable for visible to near-infrared wavelengths
- Custom design available
- Fiber: SMF and MMF
- Metal coating on reflective surface, AR coating on output surface
Two types of LECs
Direct Polishing LEC
Thin, compact and simple
Prism Fused LEC
Accurate circular beams are possible
Applications
- OCT Probes
- ateral radiation catheters in
ablation, vaporization treatments
Emission experiment
using Prism Fused LEC
SILICAGRIN Condenser
Beam Shape Short Focalized and Wider
Features
- A serial connection of Low NA and High NA lenses emits a beam with a small focus and a large divergence.
- The reduced focus also makes it suitable for coupling and observations of micro-optical systems.
- Minimum spot size 4.0μm (@1550nm).
- Custom design available
- Fiber: SMF, PMF, MMF
- Zirconia/metal ferrule processing, etc.
- AR coating, fiber metallization processing
| Typical Optical Characteristics (SMF) | |
| Insertion Loss at fused point | < 0.1 dB |
| Beam Waist Size (2ω0) | 4.0 μm |
| Beam Waist Distance (L0) | 0 – 50 μm |
Applications
Optical diagnosis
in vivo microscopy imaging
An example of beam shape with SMF and Condenser (@1550nm)
SILICAGRIN BEX (Beam Expander)
Beam Shape Beam Expansion
Features
- Expands the beam of a single mode fiber from 40 to 60μm without changing the profile.
- Eliminates excessive energy density of high power laser output and coupling.
- Reduces connection loss when connecting in contaminated areas.
Applications
Cardiovascular dynamics
| Typical Optical Characteristics | |
| Maximum Optical Power | 6 W |
| Expanded Beam Diameter | 40, 50, 60 μm |