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 supercontinuum (SC) lightwave was generated by employing a mode-locked laser diode with injection locking for the first time, and the 25GHz-spaced optical carriers in the generated SC lightwave over seamless S-, C-, and L-bands were locked to an optical frequency of 193.1 THz.
Abstract: A supercontinuum (SC) lightwave is generated by employing a mode-locked laser diode with injection locking for the first time. The 25-GHz-spaced optical carriers in the generated SC lightwave over seamless S-, C-, and L-bands are locked to an optical frequency of 193.1 THz. The injection of a master light improved both the signal-to-noise ratio and linewidth of the optical carriers.
20 citations
TL;DR: In this paper, an experimental study of the polarization-resolved nonlinear dynamics of a 1550 nm single-mode vertical-cavity surface-emitting laser subject to orthogonal optical injection was performed.
Abstract: We report a first experimental study of the polarization-resolved nonlinear dynamics of a 1550 nm single-mode vertical-cavity surface-emitting laser (VCSEL) subject to orthogonal optical injection. Stability maps identifying the boundaries between regions of different nonlinear dynamics are reported for two different values of the bias current. A rich variety of nonlinear behaviors including periodic, period doubling, and irregular dynamics are observed for both polarizations. Polarization switching and injection locking induced by the optical injection are also included in the mapping. Analysis is given also in terms of the frequency detuning between the injected light and the orthogonal linear polarization of the VCSEL. When the frequency detuning is positive polarization switching can be observed in a periodic dynamical regime, including both period one and period two behaviors. For positive frequency detuning, the only polarization that contributes to the dynamics of the total power is the orthogonal polarization. For negative frequency detunings both linear polarizations contribute to the dynamics of the total power.
19 citations
TL;DR: A new Nd:YAG-pumped picosecond optical parametric oscillator that generates bandwidth-limited pulses using two LiNbO3 crystals and the spectral intensity of a quantum noise at λ = 0.85 μm is measured.
Abstract: We report a new Nd:YAG-pumped picosecond optical parametric oscillator that generates bandwidth-limited pulses. Using two LiNbO3 crystals, it produces tunable, near-1.4-μm (signal-wave) pulses of 18-psec duration and Δν = 1.2 cm−1 FWHM (Δντ = 0.7). The output energy of the optical parametric oscillator in a signal wave is no less than 2 mJ with 10% energy stability. The key to this device is the injection of cw single-frequency GaAs diode-laser radiation. Using the injection of diode-laser radiation, we have measured the spectral intensity of a quantum noise at λ = 0.85 μm. The intensity was found to be 6 ± 2 W/cm2 cm−1 sr (theoretical value, 4.7 W/cm2 cm−1 sr).
19 citations
Patent•
06 Nov 1985TL;DR: In this paper, a coherent lightwave transmitter includes a relatively low power, single frequency laser which provides an injection locking signal to a plurality of higher power lasers located in separate, parallel optical paths.
Abstract: A coherent lightwave transmitter includes a relatively low power, single frequency laser which provides an injection locking signal to a plurality of higher power lasers located in separate, parallel optical paths. A modulator is interposed between the single frequency laser and the higher power lasers, and the outputs of the latter are added constructively to form a high power transmitter output. Feedback control of the optical path lengths to maintain constructive interference is also described.
19 citations
TL;DR: The VCO topology exhibits a very wide tuning range from few Hz to 368.9 MHz and features the rapid voltage swing and the 48% duty cycle with good transient characteristics which is difficult to get from the conventional oscillator.
Abstract: design for a voltage-controlled ring oscillator (VCO) is presented. The design allows an implementation of low frequency ring oscillator using relatively small devices and less stage. It is implemented using .18um technology provided by TSMC technology using 3.3V power supply. The VCO topology exhibits a very wide tuning range from few Hz to 368.9 MHz. It also features the rapid voltage swing and the 48% duty cycle with good transient characteristics which is difficult to get from the conventional oscillator. Its power dissipation at the maximum oscillation frequency is 35.05 mW. A frame work for modeling the phase noise in complementary metal-oxide-semiconductor (CMOS) ring oscillators. Phase noise for simulated circuit is -88dbc when offset frequency is 10 5 HZ.
19 citations