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 paper, a dual-wavelength injection locking of a Fabry-Perot (FP) laser diode was used for non-return-to-zero (NRZ) to return-tozero (RZ) data format and wavelength conversion.
47 citations
TL;DR: In this paper, the AM sideband injection-locking characteristics of 1.3-mu m distributed-feedback (DFL) laser transmitters have been studied experimentally.
Abstract: Amplitude-modulation (AM) sideband injection-locking characteristics of 1.3- mu m distributed-feedback lasers are studied experimentally. When the master laser light, which is amplitude-modulated, is injected into slave lasers, the slave lasers can be phase-locked to each sideband of the master laser. This means that the frequency separation between slave lasers can be controlled by the modulation frequency of the master laser. By controlling the injection power, it is possible to achieve a very stable AM sideband injection-locked state of slave lasers. Results on phase-noise and phase-modulation measurements, the frequency stabilization between two channels, and the injection locking to a short pulse are presented. On the basis of the experimental results, an example for designing the multifrequency laser transmitter by means of the AM sideband injection-locking and the mode-locking techniques is described. >
46 citations
16 Sep 2003
TL;DR: An injection locked oscillator topology is presented, based on MOS-switches directly coupled to the LC-tank of well-known LC-oscillators, which features a very low input capacitance and high frequency capability.
Abstract: An injection locked oscillator topology is presented, based on MOS-switches directly coupled to the LC-tank of well-known LC-oscillators. The direct injection locking scheme features a very low input capacitance and high frequency capability. The functionality of the direct locking is verified through two test circuits in 0.13 /spl mu/m standard CMOS. With a power consumption of 3 mW, one oscillator divides 50 GHz by two with a locking range of 80 MHz. Also at a power consumption of 3 mW, the second oscillator with a lower Q tank divides 42 GHz by two with a locking range of 1.5 GHz.
46 citations
TL;DR: Numerical results show that if the laser subjected to strong injection serves as the receiver, chaos pass filtering of the system is similar to that of unidirectional coupled systems, and it is demonstrated that messages can be extracted successfully from either of the two transmission directions.
Abstract: Chaos synchronization and message transmission between two semiconductor lasers with extremely unsymmetrical bidirectional injections (EUBIs) are discussed. By using EUBIs, synchronization is realized through injection locking. Numerical results show that if the laser subjected to strong injection serves as the receiver, chaos pass filtering (CPF) of the system is similar to that of unidirectional coupled systems. Moreover, if the other laser serves as the receiver, a stronger CPF can be obtained. Finally, we demonstrate that messages can be extracted successfully from either of the two transmission directions of the system.
46 citations
TL;DR: In this article, a 50-Mb/s quadrature phase-shift keying (QPSK)/off-Quadrature QPSK/O-QPSk (O-O-PSK) was proposed for biomedical high-quality imaging application.
Abstract: A 50-Mb/s quadrature phase-shift keying (QPSK)/offset quadrature phase-shift keying (O-QPSK) transmitter suitable for biomedical high-quality imaging application is presented. Centered at 915 MHz, the phase modulation is achieved by directly modifying the self-resonant frequency of an LC voltage-controlled oscillator through capacitor bank switching. By eliminating many unnecessary building blocks in the conventional QPSK/O-QPSK transmitter, significant power and area savings are achieved. Implemented in 0.18- μm CMOS technology, it occupies an active core area of 0.28 mm2. With 305-MHz injection frequency and consuming 5.6 mW under 1.4-V supply, the transmitter achieves error vector magnitude (EVM) of 11.4%/5.97% for O-QPSK/QPSK modulation while delivering output power of -3 dBm at 50 Mb/s. By lowering the injection frequency to 101.67 MHz, it consumes 5.88 mW under the same supply voltages while delivering an output power of -3.3 dBm. The transmitter achieves measured EVM of 6.4% at 50 Mb/s under QPSK modulation.
46 citations