Bow-Tie Polarization Maintaining Fiber, 780-830 nm, 0.14-0.18 NA.

Standard Polarization Maintaining Fibers

The F-HB750 Polarization Maintaining Fiber uses Fibercore's Bow-Tie polarization maintaining (PM) fiber technology. This highly birefringent (HiBi) fiber, is optimized for operation between 780 - 830 nm and has a beat-length of less than 2 mm. The beat-length, the length over which the fiber polarization rotates through 360°, is one of the fundamental performance measures: the shorter the beat-length, the better the polarization-preserving properties of the fiber. This Polarization Maintaining fiber has a 125 μm cladding, 245 μm coating, a 4.1 μm Mode Field Diameter, and a 0.14 to 0.18 NA.

This bare fiber does not include a protective fiber jacket. Standard pricing is per meter. The following volume discount schedule is applied when ordering continuous lengths of optical fiber: 10 - 49 m: 15%, 50 - 99 m: 22%, 100 - 499 m: 25%, and ≥ 500 m: 28%.

Bow-Tie Polarization Maintaining Fiber

Cross section diagram of the Bow-Tie Polarization Maintaining Fiber.

The core is flanked by areas of high expansion, boron-doped glass, which shrink back more than the surrounding silica. Tension caused induces birefringence (creating two different indices of refraction: a higher index parallel and a lower index perpendicular to the applied stress).

High Birefringence

“Bow-Tie” cladding preserves polarization with stress-induced intrinsic birefringence. The fast axis is oriented horizontally.

"Bow-Tie" cladding preserves polarization with stress-induced intrinsic birefringence. The fast axis is oriented horizontally.

Large Wavelength Range and Short Beat Lengths

These Bow-tie polarization maintaining fibers, also known as highly birefringent (HiBi) fibers, are optimized for Visible through NIR wavelengths and have a beat-length of less than 2 mm. The beat-length, the length over which the fiber polarization rotates through 360°, is one of the fundamental performance measures: the shorter the beat-length, the better the polarization-preserving properties of the fiber.

Standard and Custom Patch Cables

Standard patch cables are available in several standard lengths with FC/UPC or FC/APC connectors. Please note that slow axis is accurately aligned to the connector key. If you need custom configuration, please use our custom patch configurator model:

Applications

High-data-rate communications systems
Polarization-sensitive components
Raman amplifiers
Fiber optic sensors - polarimetric, polarization state sensing
Gyroscopes
Coherent transmission and detection
Interferometric sensors
Modulators
Delay lines
Spectroscopy
Biomedical applications

Note on Fiber Length Availability

Due to increasing supply constraints, obtaining fiber lengths greater than 1 km has become more challenging. If you require fiber longer than 1 km, please contact us directly to discuss availability and lead times.

Specifications

Technical Specs

Index Profile
Step
Fiber Type
Bow-Tie Polarization Maintaining
Mode Field Diameter, Nominal
3.5 - 4.6 µm @780 nm
Cladding Diameter
125 ±1 µm
Coating Diameter
245 ±15 µm
Cable Diameter
2.5 mm
Operating Wavelength
780 - 830 nm

Cut-off Wavelength
610 - 750 nm
Buffer Coating Material
Dual Acrylate
Maximum Attenuation
8 dB/km @780 nm
Numerical Aperture
0.14 - 0.18
Proof Test
100 kpsi

Index Profile
Step
Fiber Type
Bow-Tie Polarization Maintaining
Mode Field Diameter, Nominal
3.5 - 4.6 µm @780 nm
Cladding Diameter
125 ±1 µm
Coating Diameter
245 ±15 µm
Cable Diameter
2.5 mm
Operating Wavelength
780 - 830 nm

Cut-off Wavelength
610 - 750 nm
Buffer Coating Material
Dual Acrylate
Maximum Attenuation
8 dB/km @780 nm
Numerical Aperture
0.14 - 0.18
Proof Test
100 kpsi

Resources & Downloads

Literature

Standard PM Fiber(1 MB, PDF)

Technical Notes

Fiber Optics: How to Choose an Optic for Free Space Fiber Coupling - Technical Note(612.7 kB, PDF)

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