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Chirp evaluation of semiconductor DFB lasers through a simple Interferometry-Based (IB) technique.
Applied Optics
|November 10, 2016
Summary
This study presents a low-cost interferometric method to accurately measure the adiabatic chirp factor in distributed feedback (DFB) lasers, crucial for designing optical fiber systems.
Area of Science:
- Photonics and Optical Communications
- Semiconductor Device Physics
Background:
- Directly modulating laser sources is cost-effective for optical fiber systems.
- Laser frequency chirp is an undesirable effect impacting digital and analog links.
- Accurate evaluation of chirp parameters is essential for system design.
Purpose of the Study:
- To introduce a novel, low-cost method for evaluating the adiabatic chirp factor.
- To provide an alternative measurement technique for distributed feedback (DFB) lasers.
- To enhance the precision of chirp parameter assessment in optical systems.
Main Methods:
- Utilizes a simple interferometric scheme.
- Focuses on evaluating the adiabatic chirp factor.
- Specifically applied to distributed feedback (DFB) laser sources.
Main Results:
- The proposed method offers a low-cost solution.
- The technique demonstrates good accuracy in results.
- Provides a valuable addition to existing chirp evaluation methods.
Conclusions:
- The interferometric method is effective for measuring the adiabatic chirp factor in DFB lasers.
- This approach balances cost-effectiveness with high accuracy.
- Facilitates more precise design of optical fiber communication systems.
