Pump-wavelength-locked erbium-doped fibre amplifier employing novel external cavity for 0.98 μm laser diode

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Abstract
A novel external cavity configuration for a 0.98 μm strained quantum-well LD set in an erbium-doped fibre amplifier allows the pump wavelength to be locked to within 0.6 nm for LD temperatures from 18.5 to 39°C, and LD drive currents from 40 to 120 mA.