With service-environments ranging from the Arctic through to the desert and even into outer-space, all of the components of a high-grade Fiber Optic Gyroscopes must continue to deliver their best performance over the broadest possible temperature range.
HB-G has a unique, dual-layer, acrylate coating which provides all of the low-temperature performance of a conventional, silicone-rubber coating - plus, the additional benefits of optical mode-stripping and total freedom from 'crumbing' during mechanical removal. Test coils have demonstrated extinction ratios of -27 dB at temperatures as low as -60°C.
| HB800G | HB1250G | HB1500G | |
|---|---|---|---|
| Design Wavelength1 | 830 nm | 1300 nm | 1550 nm |
| Cut-off Wavelength | 600-800nm | 1030-1270nm | 1230-1520nm |
| Numerical Aperture | 0.16 +/- 10% | ||
| Attenuation2 | <5 dB/km | <2 dB/km | <2 dB/km |
| Beat-Length3 | <1.5mm | ||
| Proof Test | 0.5% or 1.0% (50 kpsi or 100 kpsi) | ||
| Outside Diameter4 (Fibre) | 80µm +/- 1% RMS | ||
| Core Cladding Concentricity | <1.0µm or 0.5 µm | ||
| Outside Diameter (Coating) | 175µm +/- 5% | ||
1. The Design Wavelength is the wavelength (or wavelengths) at
the which the fibre is typically used. In practice, the fibre
will transmit a TEM00 mode at any wavelength within an operating
window extending approximately 200 nm from the cut-off wavelength.
2. Attenuation is quoted for the shortest Design wavelength.
3. Beat-length is measured at 633 nm for all fibre types. To a
first approximation, beat-length scales directly with operating wavelength.
4. Localised, peak-to-peak variations of up to 3% may be experienced.
 | For more information, contact: Metrotek Phone: (727) 547-8307 Fax: (727) 547-0687 E-mail: fiberoptics@metrotek.com BACK: To Metrotek Polarization Fiber Page |