Experimental demonstration of distributed feedback semiconductor lasers based on reconstruction-equivalent-chirp...

Area of Science:

• Photonics
• Semiconductor device physics
• Integrated optics

Background:

• Distributed feedback (DFB) semiconductor lasers are crucial for optical communication.
• Current fabrication methods for photonic integrated circuits (PICs) face challenges in cost and complexity.
• Simultaneous multi-wavelength emission is desirable for advanced optical systems.

Purpose of the Study:

• To report the first experimental realization of DFB semiconductor lasers using reconstruction-equivalent-chirp (REC) technology.
• To demonstrate the potential of REC technology for monolithic integration in photonic integrated circuits (PICs).
• To evaluate the fabrication capabilities of REC technology compared to existing methods.

Main Methods:

• Experimental fabrication of DFB semiconductor lasers utilizing reconstruction-equivalent-chirp (REC) technology.
• Characterization of laser performance, including lasing wavelength and simultaneous emission.
• Comparison of REC fabrication process with electron beam and holographic technologies.

Main Results:

• Successful experimental realization of DFB semiconductor lasers based on REC technology.
• Achievement of lasers with different lasing wavelengths emitted simultaneously on a single chip.
• Demonstration that REC fabrication is comparable in power to electron beam technology.

Conclusions:

• REC technology offers a promising approach for the monolithic integration of DFB semiconductor lasers.
• The fabrication process of REC technology balances high performance with cost-effectiveness.
• This advancement paves the way for more advanced and integrated photonic devices.