79 research outputs found
Possible approach to improve sensitivity of a Michelson interferometer
We propose a possible approach to achieve an 1/N sensitivity of Michelson
interferometer by using a properly designed random phase modulation. Different
from other approaches, the sensitivity improvement does not depend on
increasing optical powers or utilizing the quantum properties of light.
Moreover the requirements for optical losses and the quantum efficiencies of
photodetection systems might be lower than the quantum approaches and the
sensitivity improvement is frequency independent in all detection band.Comment: 8 pages, 3 figures, new versio
Analysis of the Impact of Finite Intermediate Frequency on Optical PSK Synchronous Heterodyne Communication Systems
Sensitivity Analysis and Performance Optimization of an Optical Costas Phase-Locked Loop
Minimum polarization modulation: a highly bandwidth efficient coherent optical modulation scheme
50-dB Nonlinear Crosstalk Suppression in a WDM Analog Fiber System by Complementary Modulation and Balanced Detection
A technique for reducing crosstalk in analog WDM systems is described. This technique combines the modulated twin carriers technique with balanced detection. To facilitate measurements, relatively high crosstalk levels are produced by launching high powers into the fibers. A reduction of up to 50-dB and low residual crosstalk over the entire RF range is demonstrated at low frequencies.link_to_subscribed_fulltex
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