Dithering of Semiconductor Ring Laser Gyro Using Period-One Oscillations
01 Sep 2020-
TL;DR: In this paper, an integrated semiconductor ring laser gyroscope is dithered by operating in the period-one (P1) oscillation regime through injection locking by an external laser source.
Abstract: An integrated semiconductor ring laser gyroscope is dithered by operating in the period-one (P1) oscillation regime through injection locking by an external laser source. The dithering range can be tuned by varying the detuning frequency between the gyro and external laser source.
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01 Jan 2012
139,059 citations
"Dithering of Semiconductor Ring Las..." refers methods or result in this paper
...For integrated semiconductor ring laser gyro (SRLG), lock-in becomes more severe as the magnitude of backscattering from sidewall roughness is much higher as compared to He-Ne RLG [2]....
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...The values of all the parameters are taken from our previous work [2]....
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...Although mechanical dithering is widely used in He-Ne RLG, it is not a viable solution for integrated SRLG as it involves keeping the gyro on a moving platform....
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IBM1
TL;DR: The present state-of-the-art in GaAs junction lasers is described, and the principles of operation are discussed.
Abstract: This paper is a review of semiconductor laser work. The principles of operation are discussed. The stress is on work since early 1964. The present state-of-the-art in GaAs junction lasers is described.
210 citations
"Dithering of Semiconductor Ring Las..." refers methods in this paper
...The evolution of CW, CCW electric fields (Ecw and Eccw) and the charge carrier density inside the SRLG active cavity (n) in the presence of external optical injection can be modeled using the rate equations as [4]...
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TL;DR: The period-one (P1) nonlinear dynamics of a semiconductor laser subject to both optical injection and optical feedback are investigated for photonic microwave generation and a dual-loop optical feedback stabilizes the fluctuations of the oscillation frequency.
Abstract: The period-one (P1) nonlinear dynamics of a semiconductor laser subject to both optical injection and optical feedback are investigated for photonic microwave generation. The optical injection first drives the laser into P1 dynamics so that its intensity oscillates at a microwave frequency. A dual-loop optical feedback then stabilizes the fluctuations of the oscillation frequency. Photonic generation at 45.424 GHz is demonstrated with a linewidth below 50 kHz using a laser with a relaxation resonance frequency of only 7 GHz. The dual-loop feedback effectively narrows the linewidth by over an order of magnitude, reduces the phase noise variance by more than 500 times, and suppresses side peaks in the power spectrum.
110 citations
"Dithering of Semiconductor Ring Las..." refers background in this paper
...This phenomenon has also found widespread application in the area of microwave generation using optical sources [3]....
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TL;DR: The proposed architecture shows significant manifold advantages with respect to other existing optical solutions: no polarization-induced noise, no use of frequency-locking techniques, negligible bending losses, high cavity quality factor, complete evaluation of the rotation speed, predictable thermal variation of the gyro scale factor, and very high dynamic range.
Abstract: In this paper, we report, for the first time to our knowledge, the modeling and the design of a miniaturized integrated optical sensor, based on a multiple quantum-well (MQW) microring laser, to be used in gyroscope systems. The device can be fully integrated on a single chip and used either in low (e.g., vehicles for land transport) or high (e.g., ships, airplanes, spaceborne platforms) sensitivity navigation systems. The model includes the influence of some physical effects, such as quantum noise, lock in, thermal effect, and sidewall roughness-induced losses. Very good performance has been obtained in terms of gyro quantum limit, operating regions of detectable velocity, thermal range of operation, and power consumption. The proposed architecture shows significant manifold advantages with respect to other existing optical solutions: no polarization-induced noise, no use of frequency-locking techniques, negligible bending losses, high cavity quality factor, complete evaluation of the rotation speed, predictable thermal variation of the gyro scale factor, and very high dynamic range.
75 citations