Polarisation Maintaining Erbium Doped Fiber

DHB1500

Polarisation Maintaining
Erbium Doped Fiber

	Tried and tested design
	Fully qualified (including modelling parameters)
	High conversion efficiency
	High polarisation extinction ratio

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 - 5.5 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

For more information, contact:
Metrotek
Phone: (727) 547-8307
Fax: (727) 547-0687

E-mail: fiberoptics@metrotek.com

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