Tunable multi-wavelength fiber lasers based on an Opto-VLSI processor and optical amplifiers

Area of Science:

• Photonics and Laser Technology
• Optical Engineering
• Fiber Optics

Background:

• Tunable fiber lasers are crucial for various applications, including spectroscopy and telecommunications.
• Existing tunable laser sources often face limitations in terms of port count, tuning range, or stability.
• The integration of advanced optical components is key to overcoming these limitations.

Purpose of the Study:

• To propose and experimentally demonstrate a novel multi-wavelength tunable fiber laser architecture.
• To leverage an Opto-VLSI processor for simultaneous wavelength selection from multiple optical amplifiers.
• To achieve a multiport tunable fiber laser with independent wavelength control for each port.

Main Methods:

• A multi-wavelength tunable fiber laser system was designed incorporating an Opto-VLSI processor.
• The processor was used to select specific spectral portions from different optical amplifiers into individual fiber rings.
• A 3-port configuration was experimentally realized and characterized for its tuning capabilities and output performance.

Main Results:

• A 3-port tunable fiber laser source was successfully demonstrated.
• Each port's output wavelength was independently tunable within the C-band with a 0.05 nm step.
• The laser exhibited a narrow linewidth of 0.05 nm, an optical side-mode-suppression-ratio (SMSR) of approximately 35 dB, and power uniformity < 0.5 dB.

Conclusions:

• The proposed Opto-VLSI-based fiber laser architecture enables flexible and independent multi-wavelength generation.
• The experimental results validate the system's capability for stable, high-performance tunable laser output.
• This technology offers a promising solution for applications requiring versatile and precise optical sources.