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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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Patent
20 Dec 2013
TL;DR: In this article, a self-injection locking circuit for sustaining an RF modulated optical signal is described, where the circuit is composed of a self injection locking component (107) having a fiber optic delay line (130) over which a portion of the optical signal propagates and a phase detector (150) coupled to the at least two fiber optic cables and configured to determine a phase difference between the signals propagating over one of the respective fiber optic cable.
Abstract: Aspects of the disclosure relate generally to a circuit (100) for sustaining an radio frequency (RF) modulated optical signal. The circuit may comprise a self injection locking component (107) having a fiber optic delay line (130) over which a portion of the optical signal propagates. The circuit may also comprise a self phase locked loop component (109) having at least two fiber optic cables (120, 140) having different lengths and over which another portion of the optical signal propagates and a phase detector (150) coupled to the at least two fiber optic cables and configured to determine a phase difference between the signals propagating over one of the respective fiber optic cables. The circuit may further comprise a voltage controlled oscillator (110) configured to generate a stable oscillating signal in response to signals generated by each of the self injection locking and self phase locked loop components, the stable oscillating signal being configured to sustain the optical signal.

60 citations

Journal ArticleDOI
TL;DR: In this paper, the authors simulate the injection-locking performance of a 1% antireflection coated Fabry-Perot laser amplifier (AR-FPLA) and demonstrate the 25-Gbit/s DWDM-PON application with the directly modulated AR-FPla based ONU transmitter under side-mode injection locking condition.
Abstract: We simulate the injection-locking performance of a 1% antireflection coated Fabry-Perot laser amplifier (AR-FPLA) and demonstrate the 25-Gbit/s DWDM-PON application with the directly modulated AR-FPLA based ONU transmitter under side-mode injection-locking condition The effect of the AR-FPLA front-facet reflectivity on the injection locking range detuning and the Q-factor are interpreted from theoretical simulations and are experimentally characterized A 25-channel locking capacity is reported for such a side-mode injection-locked AR-FPLA with corresponding wavelength locking range of 30 nm, the minimal requested power of -7 dBm and gain extinction ratio of 35 dB can guarantee the BER of <; 10-9 with their worst receiving sensitivity degrading to -19 dBm

60 citations

Journal ArticleDOI
TL;DR: In this paper, the first experimental invetigation of the polarization mode switching dynamics and injection-wavelength-dependent polarization-mode bistability of a 1.5m wavelength single-mode vertical-cavity surface-emitting laser (VCSELs) under external laser beam injection was reported.
Abstract: We report the first experimental invetigation of the polarization-mode switching dynamics and injection-wavelength-dependent polarization-mode bistability of a 1.5-m wavelength single-mode vertical-cavity surface-emitting lasers (VCSELs) under external laser beam injection. An injection beam with polarization orthogonal to that of the stand-alone VCSEL caused polarization-mode instability and switching of the VCSEL output. By varying the optical injection detuning for fixed injection power observation was made of a novel form of polarization bistability which will have applications in a new type of all-optical flip-flop and signal processing scheme.

60 citations

Journal ArticleDOI
TL;DR: In this paper, a Fabry-Perot laser diode coupled to a fiber loop containing a fiber FabryPerot resonator (FFPR) and a polarization controller was used to generate near transform-limited pulses.
Abstract: Wavelength-tunable, near transform-limited pulses have been generated using a Fabry-Perot laser diode coupled to a fiber loop containing a fiber Fabry-Perot resonator (FFPR) and a polarization controller. The ratio of transmitted to reflected light from the loop can be adjusted using the polarization controller. Single-mode operation of the gain-switched laser is achieved by self-injection locking, which is induced by light reflected from the fiber loop. The resulting output pulse has a time-bandwidth product of 0.4 and is tunable over about 15 nm by varying the tuning voltage of the FFPR. >

60 citations

Journal ArticleDOI
TL;DR: This is the first demonstration of PhC laser-based all-optical memory using InGaAsP/InP buried heterostructure photonic crystal (BH-PhC) lasers and fast switching times of about 60 ps were achieved.
Abstract: We have demonstrated an all-optical memory by using InGaAsP/InP buried heterostructure photonic crystal (BH-PhC) lasers. We achieved distinct optical injection locking bistability in an ultra-compact active region (4 × 0.3 × 0.16 μm3) with only 25 μW pump power in the PhC waveguide, which is two orders less than previously reported optical memories based on other bistable semiconductor lasers. Dynamic memory operations were achieved with pump power of 100 μW and switching power of 22 μW and 71 μW in the PhC waveguide. Fast switching times of about 60 ps were achieved. To the authors’ best knowledge, this is the first demonstration of PhC laser-based all-optical memory.

59 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202333
202276
2021107
2020145
2019169
2018146