SCIENTIFIC INSTRUMENT/ INTERFEROMETRIC ROTATION SENSING / FOG–8
CIRCADIA / FOG–8
Fiber-Optic Gyroscope — Sagnac Metrology Laboratory
LASER SOURCE1550 nm
INTERFEROMETRYDUAL-PATH
RENDERERINITIALISING
01 / OPTICAL BENCH · LIVE SCENE
TRUE ROTATION+11.000°/s
INPUT / Ω
SAGNAC PHASE+0.000rad
Δφ = 8πNAΩ / λc
CCW / CW
MEASURED RATE Ω̂ · LOW-PASS+11.000 °/s
QUADRATURE LOCKED ●
FIBRE LENGTH 2πRN678.6 m
COIL OPTICAL PATH
DETECTOR A +π/2 BIAS0.000 V
INTERFERENCE CHANNEL 01
DETECTOR B −π/2 BIAS0.000 V
INTERFERENCE CHANNEL 02
02 / TIME-DOMAIN ACQUISITIONAngular rate response
INPUT MEASURED
REAL-TIME STREAM / LAST 48 SECONDS
03 / QUADRATURE DEMODULATIONOptical transfer curve
+BIAS −BIAS
OPTICAL PHASE Δφ / RAD · MARKER = CURRENT