The analysis of demodulation characteristic on the resonant optical gyro using frequency modulation technique

Liang Ning; Lijun Guo; Gang Fang; Cihang Liu

doi:10.1117/12.2087295

4 March 2015 The analysis of demodulation characteristic on the resonant optical gyro using frequency modulation technique

Liang Ning, Lijun Guo, Gang Fang, Cihang Liu

Author Affiliations +

Proceedings Volume 9521, Selected Papers from Conferences of the Photoelectronic Technology Committee of the Chinese Society of Astronautics 2014, Part I; 95210D (2015) https://doi.org/10.1117/12.2087295
Event: Selected Proceedings of the Photoelectronic Technology Committee Conferences held August-October 2014, 2014, China, China

Abstract

The resonator optic gyro (ROG), which utilizes a resonance frequency change due to the Sagnac effect, is a promising candidate for the next generation inertial rotation sensor. In this paper, we first analyzed the signal detection theory and made the demodulation curve modeling. Second, the ROG demodulation test system is set up using the laser frequency modulation spectroscopy technique. The resonance curve of the resonator is detected by the photodiode (PD) and then demodulated by the LIA. By testing at λ=1550nm, and the free spectral range (FSR), the full width at half maximum (FWHM), the depth and the finesse of resonance are 2191.41MHz, 65.55MHz, 0.9 and 33.43 respectively. Calculated from the demodulation signal, the dynamic range of the gyro is from +2.04×10³rad/s to -2.04×10³rad/s. The slope K1 of the linear part in the demodulation signal is estimated to be 0.8×10^-7V/Hz. A basic agreement between experimental results and theoretical calculated values was achieved.

Citation Download Citation

Liang Ning, Lijun Guo, Gang Fang, and Cihang Liu "The analysis of demodulation characteristic on the resonant optical gyro using frequency modulation technique", Proc. SPIE 9521, Selected Papers from Conferences of the Photoelectronic Technology Committee of the Chinese Society of Astronautics 2014, Part I, 95210D (4 March 2015); https://doi.org/10.1117/12.2087295

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
7 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Demodulation

Frequency modulation

Resonators

Gyroscopes

Modulation

Laser spectroscopy

Fiber lasers

Show All Keywords

Keywords/Phrases

Search In:

Publication Years