Fibercore PM Gyro HB800G/013 250 METERS

The Fibercore PM Gyro HB800G/013 is a polarization-maintaining optical fiber engineered for high-precision fiber optic gyroscopes. This 250-meter spool delivers exceptional birefringence stability and polarization extinction ratio performance across demanding aerospace, navigation, and defense applications. The /013 variant features a reduced 135 ± 2 µm coating diameter, optimizing coil winding density while maintaining polarization integrity from -55°C to +85°C operating range.

Technical Specifications

• Fiber Type: Polarization-Maintaining Gyro Fiber (HB800G series)


• Operating Wavelength: 810–1000 nm


• Nominal Wavelength: 830 nm


• Cut-Off Wavelength: 660–800 nm


• Cladding Diameter: 80 ± 1 µm


• Core-Cladding Concentricity: ≤ 1.0 µm


• Coating Diameter: 135 ± 2 µm (HB800G-SB/013)


• Coating Type: Dual-Layer Acrylate


• Numerical Aperture (NA): 0.14–0.18


• Mode Field Diameter (MFD): 4.2 µm typical @ 830 nm


• Attenuation: ≤ 5 dB/km @ 830 nm


• Beat Length: ≤ 1.0 mm @ 633 nm (Short Beat-Length variant)


• Polarization Extinction Ratio (PER): >30 dB @ -55°C; >28 dB @ -60°C


• Operating Temperature Range (in-coil): -55°C to +85°C


• Proof Test: 1 or 2 (100 or 200 kpsi) or greater upon request

Key Features

• Bow-Tie stress-applying elements maximize birefringence for superior PER stability across temperature


• Reduced 135 µm coating diameter enables longer coil lengths in compact packages


• Tight coating diameter tolerances (±2 µm) support precision high-speed winding


• Maintains polarization state across full operating temperature envelope

Typical Applications

• Fiber Optic Gyroscopes (FOGs)


• Inertial Navigation Systems


• Aerospace and Defense Systems


• Current Sensors


• Delay Lines

Compatibility & Integration Designed as a drop-in replacement within the HB800G PM gyro fiber family. The SB/013 variant optimizes performance where highest PER and compact coil geometry are required.