1.3mW 1550nm Er-DOPED SUPER FLUORESCENT FIBER SOURCE FOR MISSILE FIBER OPTICS GYROSCOPE

2014 ◽  
Vol 5 (3) ◽  
pp. 993-1000
Author(s):  
P Nageswara Rao ◽  
S K Shrivastava
Keyword(s):  
Fiber Optics ◽  
Light Source ◽  
Fiber Optic ◽  
High Energy ◽  
Fiber Optic Gyroscope ◽  
Physical Size ◽  
Bias Drift ◽  
Large Bandwidth ◽  
Gamma Radiations ◽  
Er Doped

Single - axis missile fiber optic gyroscope requires a light source  with a band width> 10 nm and  output power  > 0.5 mW  .The commercial FOGs    weigh   200-250gms with  a physical size of 100mmX100mmX50mm..The type of light source for missile fiber optic gyroscope is selected by operating wavelength, wavelength stability with temperature, volume and physical size. Incase of space fiber gyroscopes,  the source should be insensitive to high energy radiation like proton and gamma radiations as well. Large bandwidth light source contributes to small bias drift by gyroscope. A small volume and light weight Single Pass Backward Signal Er3+  doped Super-fluorescent Fiber source was developed using only four commercially available components for use in  missile single axis fiber optic gyroscope .The bandwidth and output power of the source are 30. 507nm and1.318mW  respectively. We presented the experimental results along with non-flattened ASE spectrum. The packed super-fluorescent fiber  source   has   a  volume  of 100mm X 100mm X 25mm  and a weight of 150 grams which to our knowledge the  smallest  in volume and light in weight ever reported.

Design of light source for ultra-high precision fiber optic gyroscope

2021 ◽  
Author(s):  
Xin Chen ◽  
Miao Yan ◽  
Jie Yu ◽  
Ruoxiang Tang
Keyword(s):  
Light Source ◽  
High Precision ◽  
Fiber Optic ◽  
Fiber Optic Gyroscope

A miniaturized BOSA with a stabilized light source for fiber-optic gyroscope

2012 ◽  
Author(s):  
Tien-Tsorng Shih ◽  
Chih-Wei Yu ◽  
Ren-Young Liu ◽  
Hao-Chi Chang ◽  
Oris Huang ◽  
...  
Keyword(s):  
Light Source ◽  
Fiber Optic ◽  
Fiber Optic Gyroscope

Reduction of light-source-induced scale-factor nonlinearities in low-cost fiber optic gyroscope

1996 ◽  
Author(s):  
Wolfgang Ecke ◽  
Klaus Hilpert ◽  
Andreas Holz ◽  
Rudolf Mueller ◽  
Michael Neukirch ◽  
...  
Keyword(s):  
Light Source ◽  
Fiber Optic ◽  
Low Cost ◽  
Scale Factor ◽  
Fiber Optic Gyroscope

The Compensation of Y Waveguide Temperature Drifts in FOG with the Thermal Resistor

2014 ◽  
Vol 924 ◽  
pp. 336-342 ◽  
Author(s):  
Ying Li Wang ◽  
Li Yong Ren ◽  
Jin Tao Xu ◽  
Jian Liang ◽  
Meng Hua Kang ◽  
...  
Keyword(s):  
Lithium Niobate ◽  
Fiber Optic ◽  
Driving Voltage ◽  
Fiber Optic Gyroscope ◽  
Temperature Drift ◽  
Thermal Resistor ◽  
Bias Drift ◽  
Half Wave Voltage ◽  
Half Wave ◽  
Environment Temperature

The lithium niobate integrated optical phase modulator (Y waveguide) is the key device in the digital closed-loop fiber optic gyroscope. However, the half-wave voltage of the lithium niobate changes with the environment temperature, which produces the phase bias drift and ultimately decreases the accuracy of FOG. In this manuscript, the thermal resistor is introduced in the amplification part in the driving circuits of Y waveguide. Due to the characteristic of the thermal resistor, the magnitude of driving voltage on Y waveguide changed with temperature to compensate the electro-optic effects temperature drift of the lithium niobate. This method was proved to improve the performance of fiber optic gyroscopes conveniently in experiment.

A Micro-Optical Transceiver for Interferometric Fiber Optic Gyroscope

2011 ◽  
Vol 483 ◽  
pp. 427-431
Author(s):  
Kun Bo Wang ◽  
Ying Jian Ma ◽  
Bo Zhang ◽  
Li Shuang Feng
Keyword(s):  
Light Source ◽  
Fiber Optic ◽  
Unit Cost ◽  
Phase Modulator ◽  
Fiber Optic Gyroscope ◽  
Free Space Optical ◽  
Optical Elements ◽  
Optical Components ◽  
Transceiver Module ◽  
Driving Circuit

The application of integrated optical components into a single module provides a method of increasing the level of integration with the real potential of reducing unit cost and raising the reliability. A new method was used to design a micro-optical transceiver module of an interferometric fiber optic gyroscope (IFOG) system. By using free-space optical coupling method, all optical parts except a phase modulator and the sensing coil were built in a single module to form the active configuration of the IFOG, including a SLD chip, a photoelectric detector, a beam splitter and a light source driving circuit. Very small optical elements were used in the micro-optical transceiver, and the driving circuit of the light source was optimized and integrated by using thick film integrated technology into the transceiver. Reducing the number of optical components makes size smaller and assembling-cost lower. A gyro test which was composed of the transceiver module connecting to a phase modulator and the polarization-mode (PM) fiber coil of 800 m in length was carried out. The bias stability of IFOG is about 0.63 degrees/hour. Experimental results show that this optical transceiver will dominate the entire low- and medium performance range of IFOG system.

scholarly journals IF Fiber Optics and Digital Correlating Spectrometer on the JCMT-CSO Interferometer

1994 ◽  
Vol 140 ◽  
pp. 117-118
Author(s):  
O.P. Lay ◽  
R.E. Hills ◽  
J. Carlstrom
Keyword(s):  
Spectral Line ◽  
Fiber Optics ◽  
Delay Line ◽  
Fiber Optic ◽  
Coaxial Cable ◽  
Delay Lines ◽  
Low Loss ◽  
Line System ◽  
Large Bandwidth ◽  
Electrical Interference

This paper describes the delay lines designed and built for the JCMT-CSO submillimeter interferometer located on the summit of Mauna Kea, Hawaii and described in the paper by Carlstrom et al. in these proceedings.One of the major features of the project is the use of fiber optics instead of coaxial cable to bring the IF signals (l-2GHz) from the receivers to the spectral line correlator via a set of fiber optic delay lines. Optical fiber now has many advantages over coax including very large bandwidth, low loss, economical cost and size and immunity to electrical interference.Soares et al. (these proceedings) describe a delay line system that can be used with a broadband continuum correlator requiring very fine delay steps The JCMT-CSO interferometer was intended to be used primarily with a digital correlating spectrometer that has a range of built-in delays, greatly easing the demand on delay line resolution.

Multiplexing Technology Research of Fiber Optic Gyroscope

2014 ◽  
Vol 574 ◽  
pp. 494-497
Author(s):  
Dong Sheng Yang
Keyword(s):  
Light Source ◽  
Small Volume ◽  
Fiber Optic ◽  
High Reliability ◽  
Integrated Design ◽  
Light Weight ◽  
Technology Research ◽  
Fiber Optic Gyroscope ◽  
Design Technology ◽  
Output Synchronization

:Proposed in this paper the multiplexing technology of three axis of fiber optic gyroscope integrated design technology, this kind of fiber optic gyroscope has high reliability, fast operation and reaction, triaxial output synchronization, three axis scale factor and its nonlinear affected by light source is the same, and small volume, light weight, low consumption, especially suitable for gyro miniaturization, lightweight requirements to weapons system.

Characteristics of Light Source Based on Dual Polarization Fiber Optic Gyroscope

2016 ◽  
Vol 43 (5) ◽  
pp. 0505009
Author(s):  
廖恢齐 Liao Huiqi ◽  
罗荣亚 Luo Rongya ◽  
邓圣 Deng Sheng ◽  
彭超 Peng Chao ◽  
赵建业 Zhao Jianye ◽  
...  
Keyword(s):  
Light Source ◽  
Fiber Optic ◽  
Fiber Optic Gyroscope ◽  
Dual Polarization
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