HiBi PM fiber - highly birefringent, bend insensitive polarization maintaining fiber

HB-T Polarisation Maintaining Fiber

For Telecommunications Applications

	Splice-compatible with other PM fibers used in telecommunications
	Excellent availability
	Cost-effective

$polarization maintaining fiber - 2-D refractive index profile of HB1500T$

2-D refractive index profile of HB1500T

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

HB980T and HB1480T have been designed specifically for the polarisation multiplexing of EDFA pump diodes.

With advanced photonic devices incorporating PM fibers now in volume production, multi-sourcing has become a fact of life. All HB-T fibers are designed to be highly compatible with other manufacturers’ PM fibers, with splice losses and extinction-ratios of better than 0.1 dB and –30 dB, respectively, achieved routinely.

Typical distribution of insertion loss values for HB1500T to ‘PANDA’ fusion splices

Specifications

	HB980T	HB1250T	HB1480T	HB1500T
Design Wavelength¹	980 nm	1310 nm	1480 nm	1550 nm
Cut-off Wavelength	870 nm – 970 nm	1100 nm – 1290 nm	1290 nm – 1450 nm	1290 nm – 1540 nm
Numerical Aperture	0.13 – 0.15	0.11 – 0.13
Mode-Field Diameter²	6.0 µm	9.0 µm	10.1 µm	10.5 µm
Attenuation³	<3 dB/km	<2 dB/km
Beat-Length⁴	<2.0 mm
Proof Test	1.0% or 2.0% (100 kpsi or 200 kpsi)
Outside Diameter (Cladding)	125 ± 1 µm
Core Cladding Concentricity	<0.75 µm
Coating Type	Dual-layer Acrylate
Outside Diameter	245 µm ± 5%	400 µm ± 5%

1. The Design Wavelength is the wavelength (or wavelengths) at which the fiber is typically used. In practice, the fiber will transmit the TEM₀₀ mode at wavelengths of up to approximately 200 nm longer than the cut-off wavelength.
2. The Mode Field Diameter is a nominal, calculated value, estimated at the operating wavelength(s) using typical value of numerical aperture and cut-off wavelength.
3. Attenuation is a worst-case value, quoted for the shortest design wavelength.
4. Beat Length is measured at 633 nm for all HB fiber types. To a first approximation, beat-length scales directly with operating wavelength.

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Ordering Information: HiBi Polarisation Maintaining Fiber

To order any of the Fibercore Limited range of HiBi Polarisation Maintaining Fibers, simply specify the product code and the length you need for your application.

Fibercore Limited's HiBi PM fiber - highly birefringent, bend insensitive polarization maintaining fiber - is fabricated using bow tie shaped stress applying parts (SAPs) HB-T is fully compatible with Panda PM fiber as can be seen in this telecoms polarization maintaining fiber spec.

Fibercore Limited, Fibercore House, University Parkway, Chilworth Science Park, Southampton, Hampshire, SO16 7QQ, United Kingdom
Tel: +44 (0)23 8076 9893 | Fax: +44 (0)23 8076 9895 | Email: info@fibercore.com