The effects of injection locking a laser diode which is also subject to varying levels of optical feedback from an external Ž . reflector are investigated. It is found that the locking range of a laser diode with optical feedback LDWOF is reduced relative to that of a solitary laser diode depending on both the increased photon lifetime and the amount of optical feedback. When the LDWOF is locke...

We propose a new optical architecture for the laser optical feedback imaging (LOFI) technique which makes it possible to avoid the adverse effect of the optical parasitic backscattering introduced by all the optical interfaces located between the laser source and the studied object. This proposed setup needs no specific or complex alignment, which is why we can consider the proposed setup to be...

A theoretical analysis has been undertaken of the steady state transverse mode selection in Vertical Cavity Surface Emitting Lasers (VCSELs) subject to optical feedback in an external cavity connguration. Proper account is taken of multiple re-ections in the external cavity. The innuence of thermal eeects on the mode selection is also treated and noise properties of the connguration are discuss...

We develop a robust and scalable solution for control and feedback of silicon photonic circuits used for optical unicast and multicast. A single-wire DAC and ADC feedback architecture is evaluated with 20Gb/s PAM-4 data streams. OCIS codes: (130.4815) Optical switching devices; (130.6622) Subsystem integration and techniques

We study optical-feedback effects using an integrated laser-modulator/amplifier. Our experiment and theory are agree well and provide interesting results of feedback effects on optical spectrum, spatial-hole burning, the photon density profile, and the microwave modulation. OCIS codes: (140.3430); (230.3120)

The noise spectra and frequency chirping of semiconductor lasers in the presence of arbitrary amounts of optical feedback are analyzed. Short external cavities with strong optical feedback are found to reduce the noise dramatically in semiconductor lasers, especially in the high-frequency regime. Frequency chirping is shown to be closely related to the nonlinear gain effect.

We report Stochastic Resonance and Coherence Resonance phenomena in experiments using CO2 lasers. First, we consider a polarized laser with feedback; for suitable feedback parameters, the laser intensity undergoes homoclinic chaos consisting in the return to a saddle focus, where noise controls the permanence time around the saddle. Second, we discuss a quasi-isotropic laser where noise induces...

Broad-area quantum cascade lasers with high output powers are highly desirable sources for various applications including infrared countermeasures. However, such structures suffer from strongly deteriorated beam quality due to multimode behavior, diffraction of light and self-focusing. Quantum cascade lasers presenting high performances in terms of power and heat-load dissipation are reported a...