Optimizing the signal-to-noise ratio from a magneto-optic head

Anthony Dewey

doi:10.1364/OAM.1990.ThFF2

Optical Society of America Annual Meeting
Technical Digest Series (Optica Publishing Group, 1990),
paper ThFF2
•https://doi.org/10.1364/OAM.1990.ThFF2

Optimizing the signal-to-noise ratio from a magneto-optic head

Anthony Dewey

OSA Annual Meeting 1990

Boston, Massachusetts United States
4–9 November 1990
ISBN:

From the session
Joint OSA/LEOS Session on Optical Storage: 2 (ThFF)

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A. Dewey, "Optimizing the signal-to-noise ratio from a magneto-optic head," in Optical Society of America Annual Meeting, Technical Digest Series (Optica Publishing Group, 1990), paper ThFF2.

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Abstract

In a magneto-optic head with differential detection, the light level on the data detectors is determined by the ratio γ² of a semipolarizing beam splitter. The different noise sources in the system are analyzed, and their dependence on γ² is determined. It is shown how to use this information to choose the value of γ² that optimizes the SNR.

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