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Short-coherence-length and high-coupling-efficiency pulsed diode laser for fiber-optic sensors

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Abstract

Light sources with low coherence and high coupling efficiency are needed for certain types of fiber-optic interferometric sensors. By driving a 1.3-μm diode laser with picosecond electrical pulses, we have reduced its coherence length to 44 μm. Coupling with an efficiency of 38% into a single-mode fiber has been measured.

© 1988 Optical Society of America

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