Noncontact Laser-to-Fiber Coupler - Adapter Interface
Non-contact laser-to-fiber couplers have an adjustable air gap between fiber and coupling lens. Flexible lens type/focal-length selection and spacing adjustment compensate small laser-wavelength shifts; high-power multimode systems can be defocused to avoid fiber damage.
Specification Snapshot
Wavelength Range [Lens Code=3.5AC]
400-800 nm
Wavelength Range [Lens Code=6AC]
400-800 nm
Wavelength Range [Lens Code=16AC]
400-800 nm
Wavelength Range [Lens Code=30AC]
400-800 nm
Wavelength Range [Lens Code=35AC]
400-800 nm
Wavelength Range [Lens Code=44AC]
400-800 nm
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Overview
Non-contact laser-to-fiber couplers have an adjustable air gap between fiber and coupling lens. Flexible lens type/focal-length selection and spacing adjustment compensate small laser-wavelength shifts; high-power multimode systems can be defocused to avoid fiber damage.
Specifications
| Parameter | Value |
|---|---|
| Selectable Operating Wavelength Range | 180-2000nm |
| Coupling Efficiency [Single-Mode Fiber] | >60% |
| Coupling Efficiency [Multimode Fiber] | >80% |
| Coupling Efficiency [Polarization-Maintaining Fiber] | >60% |
| Backreflection Level [PC Connector] | typical:-14dB |
| Backreflection Level [APC Connector] | -40dB ~ -60dB |
| Polarization Extinction Ratio | typical:>20dB |
| Polarization Extinction Ratio [optional] | 25dB; 30dB |
| Power Handling Capability [CW / GRIN lenses] | >1W |
| Power Handling Capability [CW / aspheric lenses] | >10 Watt |
| Power Handling Capability [CW / achromats lenses] | >5 Watts |
| Power Handling Capability [CW / fused silica or sapphire plano-convex and biconvex lenses] | >100 Watts |
| Focal Length (f) mm [Lens Code=3.2GR] | 3.2 mm |
| Lens Diameter [Lens Code=3.2GR] | 3.0 mm |
| Optimized Beam Diameter [Lens Code=3.2GR / Single Mode (Polarization Maintaining)] | 0.5-0.8 mm |
| Optimized Beam Diameter [Lens Code=3.2GR / Multimode] | 0.5-1.8 mm |
| Focal Length (f) mm [Lens Code=4.7GR] | 4.7 mm |
| Lens Diameter [Lens Code=4.7GR] | 3.0 mm |
| Optimized Beam Diameter [Lens Code=4.7GR / Single Mode (Polarization Maintaining)] | 0.8-1.2 mm |
| Optimized Beam Diameter [Lens Code=4.7GR / Multimode] | 0.8-2.6 mm |
| Focal Length (f) mm [Lens Code=6.6GR] | 6.6 mm |
| Lens Diameter [Lens Code=6.6GR] | 4.0 mm |
| Optimized Beam Diameter [Lens Code=6.6GR / Single Mode (Polarization Maintaining)] | 1.2-1.6 mm |
| Optimized Beam Diameter [Lens Code=6.6GR / Multimode] | 1.2-3.5 mm |
| Focal Length (f) mm [Lens Code=3.5AC] | 3.5 mm |
| Lens Diameter [Lens Code=3.5AC] | 2.0 mm |
| Optimized Beam Diameter [Lens Code=3.5AC / Single Mode (Polarization Maintaining)] | 0.5-0.9 mm |
| Optimized Beam Diameter [Lens Code=3.5AC / Multimode] | 0.5-1.8 mm |
| Wavelength Range [Lens Code=3.5AC] | 400-800 nm |
| Focal Length (f) mm [Lens Code=6AC] | 6 mm |
| Lens Diameter [Lens Code=6AC] | 3.0 mm |
| Optimized Beam Diameter [Lens Code=6AC / Single Mode (Polarization Maintaining)] | 0.9-1.5 mm |
| Optimized Beam Diameter [Lens Code=6AC / Multimode] | 0.9-2.7 mm |
| Wavelength Range [Lens Code=6AC] | 400-800 nm |
| Focal Length (f) mm [Lens Code=10AC] | 10 mm |
| Lens Diameter [Lens Code=10AC] | 6.0 mm |
| Optimized Beam Diameter [Lens Code=10AC / Single Mode (Polarization Maintaining)] | 1.6-2.5 mm |
| Optimized Beam Diameter [Lens Code=10AC / Multimode] | 1.6-5.5 mm |
| Wavelength Range [Lens Code=10AC] | 400-800 or 780-1600 |
| Focal Length (f) mm [Lens Code=16AC] | 16 mm |
| Lens Diameter [Lens Code=16AC] | 8.0 mm |
| Optimized Beam Diameter [Lens Code=16AC / Single Mode (Polarization Maintaining)] | 2.5-4.0 mm |
| Optimized Beam Diameter [Lens Code=16AC / Multimode] | 2.5-7.0 mm |
| Wavelength Range [Lens Code=16AC] | 400-800 nm |
| Focal Length (f) mm [Lens Code=20AC] | 20 mm |
| Lens Diameter [Lens Code=20AC] | 10.0 mm |
| Optimized Beam Diameter [Lens Code=20AC / Single Mode (Polarization Maintaining)] | 3.2-5.0 mm |
| Optimized Beam Diameter [Lens Code=20AC / Multimode] | 3.2-9.0 mm |
| Wavelength Range [Lens Code=20AC] | 400-800 or 780-1600 |
| Focal Length (f) mm [Lens Code=25AC] | 25 mm |
| Lens Diameter [Lens Code=25AC] | 12.5 mm |
| Optimized Beam Diameter [Lens Code=25AC / Single Mode (Polarization Maintaining)] | 4.0-6.3 mm |
| Optimized Beam Diameter [Lens Code=25AC / Multimode] | 4.0-12 mm |
| Wavelength Range [Lens Code=25AC] | 400-800 or 780-1600 |
| Focal Length (f) mm [Lens Code=30AC] | 30 mm |
| Lens Diameter [Lens Code=30AC] | 12.5 mm |
| Optimized Beam Diameter [Lens Code=30AC / Single Mode (Polarization Maintaining)] | 4.8-7.5 mm |
| Optimized Beam Diameter [Lens Code=30AC / Multimode] | 4.8-12 mm |
| Wavelength Range [Lens Code=30AC] | 400-800 nm |
| Focal Length (f) mm [Lens Code=35AC] | 35 mm |
| Lens Diameter [Lens Code=35AC] | 12.5 mm |
| Optimized Beam Diameter [Lens Code=35AC / Single Mode (Polarization Maintaining)] | 5.6-8.8 mm |
| Optimized Beam Diameter [Lens Code=35AC / Multimode] | 5.6-12 mm |
| Wavelength Range [Lens Code=35AC] | 400-800 nm |
| Focal Length (f) mm [Lens Code=44AC] | 44 mm |
| Lens Diameter [Lens Code=44AC] | 14.0 mm |
| Optimized Beam Diameter [Lens Code=44AC / Single Mode (Polarization Maintaining)] | 7.0-11 mm |
| Optimized Beam Diameter [Lens Code=44AC / Multimode] | 7.0-13 mm |
| Wavelength Range [Lens Code=44AC] | 400-800 nm |
| Focal Length (f) mm [Lens Code=50AC] | 50 mm |
| Lens Diameter [Lens Code=50AC] | 20.0 mm |
| Optimized Beam Diameter [Lens Code=50AC / Single Mode (Polarization Maintaining)] | 8.0-12.5 mm |
| Optimized Beam Diameter [Lens Code=50AC / Multimode] | 8.0-19 mm |
| Wavelength Range [Lens Code=50AC] | 400-800 nm |
| Focal Length (f) mm [Lens Code=2AS] | 2 mm |
| Lens Diameter [Lens Code=2AS] | 2.0 mm |
| Optimized Beam Diameter [Lens Code=2AS / Single Mode (Polarization Maintaining)] | 0.3-0.5 mm |
| Optimized Beam Diameter [Lens Code=2AS / Multimode] | 0.3-1.1 mm |
| Focal Length (f) mm [Lens Code=2.7AS] | 2.7 mm |
| Lens Diameter [Lens Code=2.7AS] | 3.0 mm |
| Optimized Beam Diameter [Lens Code=2.7AS / Single Mode (Polarization Maintaining)] | 0.5-0.8 mm |
| Optimized Beam Diameter [Lens Code=2.7AS / Multimode] | 0.5-1.5 mm |
| Focal Length (f) mm [Lens Code=3.9AS] | 3.9 mm |
| Lens Diameter [Lens Code=3.9AS] | 4.3 mm |
| Optimized Beam Diameter [Lens Code=3.9AS / Single Mode (Polarization Maintaining)] | 0.8-1.0 mm |
| Optimized Beam Diameter [Lens Code=3.9AS / Multimode] | 0.8-2.2 mm |
| Focal Length (f) mm [Lens Code=6.2AS] | 6.2 mm |
| Lens Diameter [Lens Code=6.2AS] | 5.0 mm |
| Optimized Beam Diameter [Lens Code=6.2AS / Single Mode (Polarization Maintaining)] | 1.0-1.6 mm |
| Optimized Beam Diameter [Lens Code=6.2AS / Multimode] | 1.0-3.5 mm |
| Focal Length (f) mm [Lens Code=11AS] | 11 mm |
| Lens Diameter [Lens Code=11AS] | 5.5 mm |
| Optimized Beam Diameter [Lens Code=11AS / Single Mode (Polarization Maintaining)] | 1.6-2.7 mm |
| Optimized Beam Diameter [Lens Code=11AS / Multimode] | 1.6-3.5 mm |
| Focal Length (f) mm [Lens Code=5BQ] | 5 mm |
| Lens Diameter [Lens Code=5BQ] | 6 mm |
| Optimized Beam Diameter [Lens Code=5BQ / Single Mode (Polarization Maintaining)] | 0.8-1.3 mm |
| Optimized Beam Diameter [Lens Code=5BQ / Multimode] | 0.8-2.5 mm |
| Focal Length (f) mm [Lens Code=10BQ] | 10 mm |
| Lens Diameter [Lens Code=10BQ] | 10 mm |
| Optimized Beam Diameter [Lens Code=10BQ / Single Mode (Polarization Maintaining)] | 1.6-2.8 mm |
| Optimized Beam Diameter [Lens Code=10BQ / Multimode] | 1.6-5 mm |
| Focal Length (f) mm [Lens Code=25BQ] | 25 mm |
| Lens Diameter [Lens Code=25BQ] | 12.5 mm |
| Optimized Beam Diameter [Lens Code=25BQ / Single Mode (Polarization Maintaining)] | 4-6.2 mm |
| Optimized Beam Diameter [Lens Code=25BQ / Multimode] | 4-11 mm |
Applications
High-power coupling; multiple wavelengths into one fiber; sources with large beam diameters and divergence; improved polarization retention with PM-fiber coupling. High-power laser-to-fiber coupling; OEM laser systems; medical and industrial applications; laser shows; laser spectroscopy; coherent communications; sensors.
Key Features
Lens options include GRIN, achromatic, aspheric, fused-silica, plano-convex and biconvex lenses. Handles up to100W CW or higher-energy pulsed sources; particularly suitable for injected power>400mW. The air gap gives fiber-face back-reflection about-14dB versus contact couplers; end-face treatment such as angle-polishing both ends can reduce this to-40dB or-60dB. High power-handling capability; various lens options; wide wavelength selection; excellent polarization-maintaining capability; choice of different adapter interfaces; low cost.
Datasheet
Product Datasheet
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Supplier Information
Shanghai Connet Fiber Communication Technology Co., Ltd. was founded in 2003 and is a high-tech enterprise specializing in the research, development, and production of laser light sources, fiber lasers, fiber amplifiers, and related products. Currently, the company has formed four major series of products led by laser light sources, fiber lasers, fiber amplifiers, and fiber gratings, including laser light sources of various wavelengths, single-frequency lasers, high-power fiber amplifiers, single-frequency polarization-maintaining fiber amplifiers, continuous and pulsed fiber lasers, high-power fiber gratings, phase-shifted gratings, chirped gratings, and other related products, providing innovative products and solutions for the research and development of high-performance fiber lasers, LiDAR, fiber sensing, fiber communication, test and measurement, scientific research, and other fields.
Shanghai Connet is committed to continuously providing globally leading technologies and products, serving fields including: special fiber applications, fiber laser research and industrialization, fiber sensing and fiber optic gyroscope research, LiDAR applications, and laser industrial applications.
The philosophy of Shanghai Connet Fiber Communication Technology Co., Ltd. is: continuously introducing globally leading technologies and products, and fully providing support and assistance to domestic users. After years of accumulation and development, the company has formed a series of products led by single-frequency fiber lasers, pulsed fiber laser light sources, high-power fiber amplifiers, and special fiber lasers, providing innovative product solutions for LiDAR, fiber sensing, coherent and spectral synthesis, research, testing and measurement of high-performance fiber lasers, spectral analysis, fiber communication, and other fields.
Shanghai Connet Laser Technology Co., Ltd. is a wholly-owned subsidiary of Shanghai Connet Fiber Communication Technology Co., Ltd. It is a high-tech enterprise specializing in the research, development, and production of laser light sources, fiber lasers, fiber amplifiers, and related products, founded in 2007. Since its establishment, Shanghai Connet Laser Technology Co., Ltd. has been guided by technological innovation, committed to providing products and services representing cutting-edge technology and future development trends for scientific research and production applications in industrial lasers, LiDAR, fiber sensing, fiber communication, and other fields. After years of accumulation and development, the company has formed three major series of products led by laser light sources, fiber lasers, and fiber amplifiers, including laser light sources of various wavelengths, high-power fiber amplifiers, single-frequency polarization-maintaining fiber amplifiers, continuous and pulsed fiber lasers, and other related products, providing innovative product solutions for the research and development of high-performance fiber lasers, test and measurement, spectral analysis, coherent synthesis, LiDAR, fiber sensing, fiber communication, and other fields.
"Looking to the future, pursuing quality; independent innovation, striving for excellence" is the development philosophy that Shanghai Connet Laser Technology Co., Ltd. has adhered to since its founding. We take quality pursuit as the core, rely on a professional R&D team and advanced concepts, continuously develop and innovate, strive for excellence, and shoulder social responsibility, seeking long-term development.
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