Active Region Mode Control for High-Power, Low-Linewidth Broadened Semiconductor Optical Amplifiers for Light...

Area of Science:

• Optoelectronics
• Semiconductor Devices

Background:

• Semiconductor optical amplifiers (SOAs) are crucial components in optical communication systems.
• Achieving high power and narrow linewidth broadening simultaneously in SOAs remains a challenge.

Purpose of the Study:

• To introduce a novel semiconductor optical amplifier (SOA) with enhanced power and minimal linewidth broadening.
• To demonstrate the integration of active region mode control with broad-spectrum epitaxial material design.

Main Methods:

• Utilized active region mode control for precise light amplification.
• Employed broad-spectrum epitaxial material design for wideband output.
• Integrated mode control with material design for optimized performance.

Main Results:

• Achieved high gain (21.92 dB at 4 mW input) and high output power (757 mW at 25 mW input) at 1550 nm.
• Demonstrated a 3 dB gain bandwidth of 88 nm.
• Limited linewidth expansion to 1.031 times the input laser linewidth.

Conclusions:

• The developed SOA effectively balances high gain and high power characteristics.
• The device's performance makes it a promising candidate for long-range light detection and ranging (LiDAR).
• This SOA offers a new amplifier solution for demanding optical applications.