IEEE Photonics Technology Letters · 1992 · 81 citations · 7 references
EngineeringElectrical EngineeringPhysicsOpticsOptoelectronicsPhotonicsFiber OpticsInterferometryOptical AmplifiersOptical Fiber PropagationOptical FibersPropagation DelayErbium-doped Fiber AmplifiersFiber Optic InterferometryHeterodyne InterferometryInterferometer DesignLinewidth BroadeningOptical Delay LinesOptical Time Delay
The authors demonstrated a delayed self-heterodyne interferometer with a recirculating delay, in which loss was partially compensated by an erbium-doped fiber amplifier. A resolution limit of 606 Hz was achieved with an 11-km fiber delay line, as compared to 18.2 kHz for the standard single-pass case. The possible effect of spectral broadening due to amplifier noise is considered and found to have a negligible effect on the system performance.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
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