Reentrant Sagnac fiber gyroscope with a recirculating delay line using an erbium-doped fiber amplifier

Chen, D.N.; Motoshima, K.; Downs, M. M.; Desurvire, E.

doi:10.1109/68.145281

Cited by 7 publications

(4 citation statements)

References 5 publications

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“…The proposed loops mentioned above use the slow and fast axes of the PMF in sequence, the effective optical length is (n f +n s )L with self-compensation property, and there are four lightwave beams propagating along the PMF. Compared with the previous re-entrant interferometric FOG [5,6] and resonant FOG [8] , apart from the above-mentioned features, the FOG with combined PMF loop has simpler signal processing circuit and can use low-coherent or superluminescent diode as light source, however, the resonant FOG must use high-coherent laser source.…”

Section: (B) the Totalmentioning

confidence: 99%

“…Slow and fast axes have also been simultaneously used in a frequency modulated continuous wave gyroscope to form two Sagnac interferometers [7] . However, the effective optical length for clockwise (cw) and counter-clockwise (ccw) light beam in this scheme is still n s L or n f L. Other schemes with compact fiber loop include re-entrant interferometric FOG [8] , slow-light resonator structure [9] , and so on.…”

mentioning

confidence: 97%

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Polarization-maintaining fiber loop with double optical length and its application to fiber optic gyroscope

Zhang

Song

et al. 2011

中国光学快报

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A novel polarization maintaining fiber (PMF) loop is proposed and used for an interferometric fiber optic gyroscope (FOG). By splicing a conventional PMF loop with two pigtailed polarization beam splitters, polarized light can be guided to propagate along the slow and fast axes of the PMF in sequence to double its effective optical length in the loop. In particular, the resultant optical length in the combined loop is partially self-compensated for some external disturbances, such as transverse strain. Primary experiments on the FOG using the proposed loop demonstrate that the average static bias deviation between-40 and +60 • C is less than 0.050 deg./h, and the average bias variation under conventional random vibration test is less than 0.10 deg./h.

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Section: (B) the Totalmentioning

confidence: 99%

mentioning

confidence: 97%

Polarization-maintaining fiber loop with double optical length and its application to fiber optic gyroscope

Zhang

Song

et al. 2011

中国光学快报

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“…The interference signal becomes I(AR ) = 1 {l + cos[tØR + Ømod (1)111 (9) where Llq5R is the nonreciprocal phase difference introduced by rotation. For sinusoidal phase modulation with a modulation depth q50, the biasing phase modulation is 0(t) =ø sin(w t) and Equation 8 becomes…”

Section: Cw Mode Operation With Optical Phase Modulationmentioning

confidence: 99%

<title>Theory of an amplified closed-Sagnac-loop interferometric fiber optic gyroscope</title>

1999

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An Amplified Closed-Sagnac Loop Interferometric Fiber Optic Gyroscope (AC-IFOG) has been proposed. It is constructed from an open-loop interferometric fiber-optic gyroscope with an erbium-doped fiber amplifier (EDFA) that closes the sensing coil into a reentrant configuration. Earlier experiments have shown a 6.56 fold increase in rotation response factor at a rate of 5°/s over a conventional gyroscope using the same fiber length and light source. This paper reports the theoretical analysis of its operation. The analysis has been focused on the effect of the EDFA inserted within the reentrant path. The analysis shows that the rotation detection factor can be increased by at least two orders as compared to a conventional IFOG when the EDFA is an ideal device. A mathematical expression for the open-loop response has been derived and it agrees well with the experiment result.

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“…The first experimental demonstration of an active RE-FOG was reported in 1988 [8] . Using an erbium-doped fiber amplifier, the loss of a RE-FOG was compensation [9] . Tsinghua University, P.R.…”

Section: Introductionmentioning

confidence: 99%

Research on multiple-integrated-optic-chip of re-entrant fiber optic gyro

et al. 2005

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Re-entrant fiber optic gyro (Re-FOG), using a shorter Sagnac sensitive ring (SSR), makes parts of the two counterpropagandizing lights re-enter the ring before they interference with each other when they reach the photo-detector. Multiple-integrated-optic-chip (MIOC) is one of the most important components of a Re-FOG. In this paper, the principle of the Re-FOG is first reviewed. A method of measuring the half-wave voltage is presented. The thermal induced change of half-wave voltage was tested.

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Reentrant Sagnac fiber gyroscope with a recirculating delay line using an erbium-doped fiber amplifier

Cited by 7 publications

References 5 publications

Polarization-maintaining fiber loop with double optical length and its application to fiber optic gyroscope

Polarization-maintaining fiber loop with double optical length and its application to fiber optic gyroscope

<title>Theory of an amplified closed-Sagnac-loop interferometric fiber optic gyroscope</title>

Research on multiple-integrated-optic-chip of re-entrant fiber optic gyro

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