Abstract
Scattering and reflection of transmission band power in a fiber amplifier cause increased bit-error rates through multiple path interference (MPI). We report a passive method for reducing MPI contributions from the front facet of a 980-nm fiber-Bragg-grating-stabilized pump laser by use of a -doped fiber pigtail between the diode facet and the fiber Bragg grating. Optical return loss in the band is reduced to below .
© 2004 Optical Society of America
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