DHB1500 combines the core composition of MetroGain™ with the bow-tie geometry of the HB range of fibers. It is invaluable in mode-locked fiber lasers or in any specialised EDFAs that demand polarisation maintenance. The standard specification enables polarisation extinction ratios of up to -30 dB to be achieved over typical gain lengths of 8 - 14 metres under normal packaging conditions with amplifier performance closely matching that of MetroGain™ 5. DHB1500 is designed for 980 nm pumping.
Specifications
DHB1500 - 980
Cut-off Wavelength
860 - 960 nm
Numerical Aperture
0.22 - 0.24
Mode-Field Diameter2
3.5 µm (980 nm), 6.0 µm (1550 nm)
Absorption at Pump Wavelength
4.5 - 6.0 dB/m
Beat-Length4
< 4 mm
Proof Test
1% (100 kpsi)
Background Loss5
< 15 dB/km
Fiber Diameter
125 ± 1 µm
Core Cladding Concentricity
< 0.75 µm
Coating Diameter
245 µm (nominal)
Coating Type
Dual Acrylate
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
