Related Experiment Video
Updated: May 15, 2026

08:48
Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy
Published on: November 22, 2019
Stability of a monolithic integrated filtered-feedback laser.
Jing Zhao1, Daan Lenstra, Rui Santos
1COBRA Institute, Photonic Integration Group, Eindhoven University of Technology, PO Box 513, 5600MB Eindhoven, the Netherlands. j.zhao@tue.nl
Optics Express
|December 25, 2012
Summary
We studied the stability of a single-mode integrated filtered-feedback laser. Our findings show good agreement between experimental measurements and theoretical models for feedback-induced dynamics.
Area of Science:
- Photonics
- Laser Physics
- Optical Engineering
Background:
- Integrated lasers are crucial for optical communication.
- Filtered feedback can enhance laser performance.
- Understanding feedback dynamics is key to laser stability.
Purpose of the Study:
- Investigate the stability of a single-mode integrated filtered-feedback laser.
- Analyze the impact of electrically controlled feedback phase on laser stability.
- Compare experimental results with theoretical models.
Main Methods:
- Experimental measurements of laser stability.
- Theoretical stability analysis.
- Investigation of feedback-induced dynamics.
Main Results:
- Laser stability is dependent on the feedback phase.
- Experimental data shows good qualitative agreement with theoretical predictions.
- Feedback-induced dynamics were successfully interpreted.
Conclusions:
- The study provides insights into the stability mechanisms of filtered-feedback lasers.
- The findings validate the theoretical model for conventional feedback.
- This work contributes to the design of stable integrated laser systems.
Related Concept Videos
Effects of feedback
Feedback in control systems plays a critical role in shaping various operational parameters, extending beyond simple error reduction to influence stability, bandwidth, gain, impedance, and sensitivity. Understanding these effects requires examining a basic feedback system characterized by defined input, output, error, and feedback signals.
Feedback significantly modifies the gain of a control system. The gain of a system without feedback is altered by a factor of one plus GH, where G represents...
Feedback significantly modifies the gain of a control system. The gain of a system without feedback is altered by a factor of one plus GH, where G represents...
Stability
The time response of a linear time-invariant (LTI) system can be divided into transient and steady-state responses. The transient response represents the system's initial reaction to a change in input and diminishes to zero over time. In contrast, the steady-state response is the behavior that persists after the transient effects have faded.
The stability of an LTI system is determined by the roots of its characteristic equation, known as poles. A system is stable if it produces a bounded...
The stability of an LTI system is determined by the roots of its characteristic equation, known as poles. A system is stable if it produces a bounded...
BIBO stability of continuous and discrete -time systems
System stability is a fundamental concept in signal processing, often assessed using convolution. For a system to be considered bounded-input bounded-output (BIBO) stable, any bounded input signal must produce a bounded output signal. A bounded input signal is one where the modulus does not exceed a certain constant at any point in time.
To determine the BIBO stability, the convolution integral is utilized when a bounded continuous-time input is applied to a Linear Time-Invariant (LTI) system.
To determine the BIBO stability, the convolution integral is utilized when a bounded continuous-time input is applied to a Linear Time-Invariant (LTI) system.

