Abstract
In a recent paper,1 we introduced compact, low insertion-loss long-period optical fiber gratings that function as spectrally-selective loss elements. These devices are useful as ASE filters to improve erbium amplifier performance and as band-rejection filters in Raman lasers/amplifiers.2 In this paper, we present a detailed description of their properties in terms of their dependence on strain, temperature, recoating and sensitivity to bends. Two new applications, gain-flattening of optical amplifiers and stabilization of errant laser diodes, are described.
© 1995 Optical Society of America
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