Design and fabrication of GaAs-integrated optical chip used in a fiber optic gyroscope

1998 ◽  
Author(s):  
Jin Li ◽  
Jianyi Yang ◽  
Weiqin Zhou ◽  
Ruimin Yin ◽  
Qiang Zhou ◽  
...  
Keyword(s):  
Fiber Optic ◽  
Fiber Optic Gyroscope ◽  
Integrated Optical

Near-navigation-grade interferometric fiber optic gyroscope with an integrated optical chip

2020 ◽  
Vol 18 (12) ◽  
pp. 120601
Author(s):  
Kejun Shang ◽  
Ming Lei ◽  
Qiang Xiang ◽  
Yonglin Na ◽  
Lizhe Zhang ◽  
...  
Keyword(s):  
Fiber Optic ◽  
Fiber Optic Gyroscope ◽  
Integrated Optical

Tactical-grade interferometric fiber optic gyroscope based on an integrated optical chip

2021 ◽  
Vol 485 ◽  
pp. 126729
Author(s):  
Kejun Shang ◽  
Ming Lei ◽  
Qiang Xiang ◽  
Yonglin Na ◽  
Lizhe Zhang
Keyword(s):  
Fiber Optic ◽  
Fiber Optic Gyroscope ◽  
Integrated Optical

scholarly journals Research on the Frequency-Dependent Halfwave Voltage of a Multifunction Integrated Optical Chip in an Interferometric Fiber Optic Gyroscope

Sensors ◽  
2019 ◽  
Vol 19 (13) ◽  
pp. 2851 ◽  
Author(s):  
Ran Bi ◽  
Lijun Miao ◽  
Tengchao Huang ◽  
Guangyao Ying ◽  
Shuangliang Che ◽  
...  
Keyword(s):  
Light Intensity ◽  
Frequency Dependence ◽  
High Precision ◽  
Measurement Method ◽  
Fiber Optic ◽  
Research Direction ◽  
Fiber Optic Gyroscope ◽  
Sinusoidal Modulation ◽  
Integrated Optical ◽  
Lock In

The multifunction integrated optical chip (MIOC) is one of the most critical parts of the interferometric fiber optic gyroscope (IFOG), and research on the halfwave voltage of the MIOC is meaningful for a high-precision IFOG. In this paper, the correlation between the frequency and halfwave voltage, which affects the interference light intensity of IFOG, is presented theoretically. A widespread measurement method for frequency dependence of the halfwave voltage, based on lock-in amplification and sinusoidal modulation, is proposed. Further, the measurement result and the oscillation of interference light intensity in the Sagnac interferometer are presented, which are in great agreement with the theory. This paper proposes the frequency dependence of the halfwave voltage and provides a new error research direction for the improvement of the MIOC in a high-precision IFOG.

MODELING OF FIBER-OPTIC COMMUNICATION CHANNEL FOR QUANTUM CRYPTOGRAPHIC SYSTEMS

2019 ◽  
pp. 90-95
Author(s):  
V. A. Minaev ◽  
I. D. Korolev ◽  
O. A. Kulish ◽  
A. V. Mazin
Keyword(s):  
Information Transmission ◽  
Information Transfer ◽  
Fiber Optic ◽  
Single Photon ◽  
Optical Devices ◽  
Energy Losses ◽  
Integrated Optical ◽  
Integrated Optical Devices ◽  
Fiber Optic Communication ◽  
Optic Communication

The existing methods of information delivery to the strategic and tactical management of many government agencies are expensive, not always reliable and efficient. Therefore, quantum cryptographic systems (QCS) have been actively developed in recent years. However, there are problems with the use of the QCS associated with the reliability of information transfer. First, the existing fiber-optic communication channels (FOCC) are not designed to transmit single-photon signals, which leads to the complexity of their cryptographic protection. The second is insufficiently methodically developed calculation of energy losses and errors in the evaluation of the characteristics of information transfer in FOCC QCS. In article the analysis of the energy loss factors in the classical fiber-optic channel is carried out and the additive loss formula is discussed in detail. Then we consider the fiber-optic channel of quantum information transmission with the use of integrated optical devices. The additive formula of optical losses in such a channel is discussed. The features of losses in integrated optical devices are shown. The features of quantum cryptographic system of information transmission are considered. As a result, the model of FOCC QCS taking into account energy losses is presented, which allows competently in theoretical terms and visualize the passage of information through modern quantum cryptographically secure telecommunications while providing control in government structures.

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