Theoretical model and experimental demonstration of frequency control in rare-earth-doped fiber lasers with a 3{times}3 nonplanar fused-fiber coupler

Journal Article · Tue Apr 01 04:00:00 EST 1997 · Journal of the Optical Society of America, Part B: Optical Physics

DOI:https://doi.org/10.1364/JOSAB.14.000895· OSTI ID:534468

Gloag, A; Forster, R J; Langford, N ^[1]

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1. Department of Physics and Applied Physics, University of Strathclyde, 107 Rottenrow East, Glasgow G4 ONG (United Kingdom)

We present a numerical analysis that illustrates the potential of 3{times}3 nonplanar fused-fiber couplers for inhibiting longitudinal mode hops in rare-earth-doped-fiber lasers. A unidirectional erbium-doped ring-fiber laser is configured that contains a single 3{times}3 fused-fiber coupler. Narrow linewidth operation without any evidence of longitudinal mode hops is observed. The oscillating linewidth is 14 kHz with a rms frequency jitter {approximately}2 kHz. The relative intensity noise is measured in both the frequency stabilized and the frequency unstabilized cases. An average 15-dB reduction in the relative intensity noise over the 0{endash}200 Hz frequency range is observed when the laser is stabilized. {copyright} 1997 Optical Society of America

• OSTI ID: 534468
• Journal Information: Journal of the Optical Society of America, Part B: Optical Physics, Journal Name: Journal of the Optical Society of America, Part B: Optical Physics Journal Issue: 4 Vol. 14; ISSN JOBPDE; ISSN 0740-3224
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
FREQUENCY CONTROL
NOISE
OPTICAL FIBERS
SOLID STATE LASERS