The polarization maintaining fiber collimator is precisely positioned and packaged with a polarization maintaining fiber pigtail and a focusing lens. It can convert the light output from the fiber into a parallel beam (Gaussian beam), or focus and couple external parallel light into the fiber. It can be used individually to achieve a specified spot size at the required position, or in pairs with optical elements such as filters and isolators placed between the pair of probes to meet the customer's application requirements. In interferometric fiber sensors based on optical coherence detection, the use of polarization maintaining fibers ensures that the linear polarization direction remains unchanged, improving the coherence signal-to-noise ratio, thereby enabling high-precision measurement of physical quantities.
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When making polarization maintaining device connectors, the direction of the cat's eye connection axis is perpendicular to the key slot direction, also known as slow axis alignment, and the opposite is fast axis alignment. As shown in the figure:
Diagram
General Parameter
PM780 Polarization-Maintaining Fiber Collimator (Fixed Working Distance) | ||||||||||
Wavelength | Bandwidth | Working Distance | Beam Waist Spot | Beam Divergence | Package Diameter | Connector | Excess Loss (no connector) | Return Loss | Mode Field Diameter | |
780nm | ±20nm | 100mm | 0.45mm | 2.2mrad | 3.2mm | FC/APC | ≤0.5dB | ≥55dB | 5.9±0.3um | |
780nm | ±20nm | 300mm | 0.75mm | 1.3mrad | 3.2mm | FC/APC | ≤0.5dB | ≥55dB | ||
PM980 Polarization-Maintaining Fiber Collimator (Fixed Working Distance) | ||||||||||
Wavelength | Bandwidth | Working Distance | Beam Waist Spot | Beam Divergence | Package Diameter | Connector | Excess Loss (no connector) | Return Loss | Mode Field Diameter | |
980nm | ±20nm | 100mm | 0.50mm | 2.5mrad | 3.2mm | FC/APC | ≤0.5dB | ≥55dB | 6.6±0.5um | |
980nm | ±20nm | 300mm | 0.96mm | 1.3mrad | 3.2mm | FC/APC | ≤0.5dB | ≥55dB | ||
1064nm | ±20nm | 100mm | 0.51mm | 2.7mrad | 3.2mm | FC/APC | ≤0.5dB | ≥55dB | ||
1064nm | ±20nm | 300mm | 0.90mm | 1.5mrad | 3.2mm | FC/APC | ≤0.5dB | ≥55dB | ||
1064nm | ±20nm | 500mm | 1.43mm | 0.95mrad | 4.0mm | FC/APC | ≤0.5dB | ≥55dB | ||
PM1310 Polarization-Maintaining Fiber Collimator (Fixed/Adjustable Working Distance) | ||||||||||
Wavelength | Bandwidth | Working Distance | Beam Waist Spot | Beam Divergence | Package Diameter | Connector | Excess Loss | Pairing Loss | Return Loss | Mode Field Diameter |
1310nm | ±20nm | 100mm | 0.4mm | 4.2mrad | 3.2mm | FC/APC | ≤0.5dB | ≤0.7dB | ≥55dB | 9.2±0.4um |
1310nm | ±20nm | 300mm | 0.8mm | 2.1mrad | 3.2mm | FC/APC | ≤0.5dB | ≤0.9dB | ≥55dB | |
1310nm | ±20nm | 500mm | 1.2mm | 1.4mrad | 4.0mm | FC/APC | ≤0.5dB | ≤1.1dB | ≥55dB | |
PM1550 Polarization-Maintaining Fiber Collimator (Fixed/Adjustable Working Distance) | ||||||||||
Wavelength | Bandwidth | Working Distance | Beam Waist Spot | Beam Divergence | Package Diameter | Connector | Excess Loss | Pairing Loss | Return Loss | Mode Field Diameter 10±0.4um |
1550nm | ±20nm | 100mm | 0.45mm | 4.4mrad | 3.2mm | FC/APC | ≤0.5dB | ≤0.7dB | ≥55dB | |
1550nm | ±20nm | 300mm | 0.86mm | 2.3mrad | 3.2mm | FC/APC | ≤0.5dB | ≤0.9dB | ≥55dB | |
1550nm | ±20nm | 500mm | 1.3mm | 1.5mrad | 4.0mm | FC/APC | ≤0.5dB | ≤1.1dB | ≥55dB |
Beam Waist Spot Diameter: The value is taken at the 1/e² point of the Gaussian beam, with the theoretical value calculated using single-mode fiber for each wavelength.
Pairing Loss: Refers to the coupling loss between the two fiber collimators in free space.
Packaging Material, Package Size, and Other Fiber Connector Types: Customizable.
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