Topic
Injection locking
About: Injection locking is a research topic. Over the lifetime, 4567 publications have been published within this topic receiving 60942 citations.
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Papers
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30 May 1994
TL;DR: The purpose of this paper is to present a method that will enable the analytic approach to oscillator design using the cascode circuit, and it is verified with a design of a low cost, low phase noise power oscillator at 850 MHz.
Abstract: The design of oscillators using linear 2-port networks are well documented and are usually based on circuits using one active device Recently there has been renewed interest in the cascode circuit because of its injection locking properties This gives it tremendous possibilities, in providing very stable high frequency oscillators by locking it to a more stable lower frequency source The design of oscillators using the cascode circuit has never been completely approached analytically before so the purpose of this paper is to present a method that will enable the analytic approach to oscillator design using the cascode circuit This method is verified with a design of a low cost, low phase noise power oscillator at 850 MHz >
17 citations
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TL;DR: In this article, the behavior of a diode laser with low-amplitude optical injection was analyzed, and the authors showed that the laser output spectrum can be much narrower than the injection spectrum and may have a dip at the free-running laser frequency.
Abstract: We have analyzed the behavior of a diode laser with low-amplitude optical injection. The noisy injection field has phase fluctuations only, with a linewidth larger than both the free-running slave laser linewidth and the locking range. Simulations show that the laser output spectrum can be much narrower than the injection spectrum and may have a dip at the free-running laser frequency. A model describing these features is based on linear superposition of the stationary responses to monochromatic injection. The mechanism of line narrowing is that the response to injection outside the locking range lies mainly inside.
17 citations
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24 Feb 2008TL;DR: In this article, the authors review the recent high-speed advances in optical injection-locked lasers, focusing on high resonance frequencies (> 70 GHz) and maximum bandwidth (> 40 GHz), and present experimental and theoretical direct modulation and master amplitude and phase modulation.
Abstract: We review the recent high-speed advances in optical injection-locked lasers, focusing on high resonance frequencies (> 70 GHz) and maximum bandwidth (> 40 GHz). Experimental and theoretical direct modulation and master amplitude and phase modulation are presented.
17 citations
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TL;DR: In this paper, a local laser based on modulation-sideband injection locking is proposed to realize homodyne reception and Doppler frequency shift tracking in ground-to-satellite coherent laser communication.
Abstract: In order to realize homodyne reception and Doppler frequency shift tracking in ground-to-satellite coherent laser communication, a local laser is experimentally demonstrated in this Letter. It is realized based on modulation-sideband injection locking, and has a 10 GHz tuning range, a 1 THz/s tuning rate, a 5 kHz linewidth, and 16 mW of output power. When applied to a Costas loop in a coherent laser communication system, the local laser can achieve ±5 GHz Doppler frequency shift tracking with a 20 MHz/s frequency shift rate, which is sufficient for the ground-to-satellite coherent laser communication.
17 citations
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TL;DR: It is shown that VCSELs with more than a 35 dB polarization mode suppression ratio can have rich nonlinear dynamics in both linear polarizations, including periodic and chaotic behaviors appearing simultaneously in both polarization modes.
Abstract: We report an experimental study of the polarization nonlinear dynamics in a 1550 nm single-mode vertical-cavity surface-emitting laser (VCSEL) subject to parallel optical injection. Experimentally measured stability maps identifying regions of different nonlinear dynamics for various values of bias current are reported. We show that VCSELs with more than a 35 dB polarization mode suppression ratio can have rich nonlinear dynamics in both linear polarizations, including periodic and chaotic behaviors appearing simultaneously in both polarization modes.
17 citations