Explore the concept of negative feedback and its role in maintaining system stability across various applications.

We present an external-cavity wavelength-tunable laser with a semiconductor optical amplifier-modulator monolithically integrated on the gain chip. The modulator chirp is analyzed, and it is explained ...

Mirror mode transforms the phase progression from a linear ramp (0→1) into a triangular pattern (0→1→0): Normal mode: Phase goes 0.0 → 1.0, then wraps back to 0.0; Mirror mode: Phase goes 0.0 → 1.0 → ...