One likely application for polarization-maintaining (PM) fiber is in fiber-optic gyroscopes onboard spacecraft. Severe performance degradation could occur if the PM fiber is sensitive to the space radiation environment, which depends on such factors as the spacecraft orbit, shielding by the skin and structure, and sunspot activity. An approximate dose rate for a fiber gyro in the spacecraft interior is ~1 krad/yr.

© 1989 Optical Society of America

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