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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TL;DR: In this article, a simple all-optical NAND gate using single-mode Fabry-Perot laser diode (SMFP-LD) is demonstrated, where the dominant lasing mode gain is suppressed only when both input beams are high.
Abstract: A novel, simple, and universal all-optical NAND gate using single-mode Fabry-Perot laser diode (SMFP-LD) is demonstrated. The basic operating principle of the proposed NAND gate is the modulation of the dominant lasing mode of SMFP-LD by the injection of external beams. The dominant lasing mode gain is suppressed only when both input beams are high. As SMFP-LD is used to demonstrate the logic function, no additional beam is required as needed in the multimode Fabry-Perot laser diode (MMFP-LD) schemes. The operating principle is explained and the experimental results are presented at 10 Gb/s input data. The logic function is realized with a clear eye opening and an extinction ratio of 14.6 dB with a rising and falling time of 38.3 and 67.1 ps, respectively.
28 citations
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TL;DR: Several planar periodic power combining oscillators with two to six Gunn diodes operating in the X-band region are discussed in this article, where the maximum power combining efficiency, 126.7% was obtained from the three-diode oscillator.
Abstract: Several planar periodic power combining oscillators containing two to six Gunn diodes operating in the X-band region are discussed. The maximum power combining efficiency, 126.7% was obtained from the three-diode oscillator. The frequency dependence of all the power combiners on the bias voltage variation seemed to be independent of the number of diodes. Injection locking was maintained over a large variation of the bias voltage. >
28 citations
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TL;DR: An all-optical generation of a millimeter wave carrier from a multiwavelength Brillouin-erbium fiber laser is presented and temperature dependence characteristic of BrillouIn frequency shift realize the flexibility of generated millimeter waves frequency to be tuned at 6.6 MHz/ °C.
Abstract: An all-optical generation of a millimeter wave carrier from a multiwavelength Brillouin-erbium fiber laser is presented. Four-channel output with spacing of about 21.5 GHz is generated from the fiber laser by controlling the gain in the cavity. A dual-wavelength signal with spacing correspondent to six orders of Brillouin frequency shift is obtained by suppressing the two channels at the middle. Heterodyning these signals at the high-speed photodetector produces a millimeter wave carrier at 64.17 GHz. Temperature dependence characteristic of Brillouin frequency shift realize the flexibility of generated millimeter wave frequency to be tuned at 6.6 MHz/ °C.
28 citations
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TL;DR: Wave propagation phenomena of phase differences observed in van der Pol oscillators coupled by inductors as a ladder are investigated and it is observed that the behavior of the phase waves generated by giving a phase difference of positive value is different from thebehavior of those generated byGiving aphase difference of negative value.
Abstract: In this study, wave propagation phenomena of phase differences observed in van der Pol oscillators coupled by inductors as a ladder are investigated. The phenomena are called “phase waves.” We classify the observed phenomena and analyze the difference in detail. We observe that the behavior of the phase waves generated by giving a phase difference of positive value is different from the behavior of those generated by giving a phase difference of negative value. We can also observe the generation of two pairs of phase waves. We clarify the mechanisms of these complicated phenomena. Finally, for the case of nine oscillators, we carry out both computer calculations and circuit experiments. Circuit experimental results agree well with computer calculated results qualitatively. key words: coupled oscillators, phase difference, phase waves, phase-inversion waves
28 citations
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TL;DR: In this paper, it was shown numerically that the injection of two chaotic modes of a multimode semiconductor laser with optical feedback into two single-mode stand-alone semiconductor lasers leads to chaotic synchronization between the respective intensities.
Abstract: We show numerically that the injection of two chaotic modes of a multimode semiconductor laser with optical feedback into two single-mode stand-alone semiconductor lasers leads to chaotic synchronization between the respective intensities. The effect of parameter mismatch between the transmitter and receiver lasers is examined, and it is concluded that the observed synchronization is a consequence of injection locking. Under these conditions, the possibility of using this demultiplexing scheme for message transmission is examined.
28 citations