for Telecommunications

The introduction of the fibre amplifier (EDFA) and resultant increased use of externally-modulated lasers has generated a keen demand for a PM fibre which combines telecommunications-compatibility with low cost. HB1250T and HB1500T have nominal MFDs of 9.5 mm and 10.5 mm respectively, together with a 400 mm dual-layer acrylate buffer and are ideally suited to both laser and integrated optic chip pigtailing applications.


HB1250T HB1500T
Design Wavelength1 1300 nm 1550 nm
Cut-off Wavelength1100 nm - 1290 nm 1290 nm - 1540 nm
Numerical Aperture0.12 ± 17%
Mode-Field Diameter9.5 ± 1.0 mm10.5 ± 1.0 mm
Attenuation2 < 2 dB/km
Beat-Length3 < 2.0 mm
Proof Test 0.5% or 1.0% (50 kpsi or 100kpsi)
Outside Diameter4 (Fibre) 125 µm +/- 1% (RMS)
Core Cladding Concentricity < 0.75 µm
Outside Diameter (Coating) 400 µm ± 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:
Phone: (727) 547-8307
Fax: (727) 547-0687

E-mail: fiberoptics@metrotek.com

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