Scalable WDM phase regeneration in a single phase-sensitive amplifier through optical time lenses

Area of Science:

• Optical communications
• Signal processing

Background:

• Optical data regeneration enhances transmission reach and data throughput.
• Scalable, multichannel regeneration solutions are critical for practical optical communication systems.
• Existing methods struggle with efficient multichannel wavelength-division multiplexing (WDM) regeneration.

Purpose of the Study:

• To propose and demonstrate a scalable WDM regeneration scheme for phase-only regeneration.
• To address the challenge of multichannel optical data regeneration.
• To enable practical adaptation of optical regeneration in communication systems.

Main Methods:

• Utilized a set of optical time-lens-based Fourier processors.
• Integrated a single phase-sensitive amplifier (PSA).
• The scheme relies on ultrafast broadband optical processing.

Main Results:

• Demonstrated simultaneous regeneration of 16 WDM channels.
• Channels had 50-GHz spacing and carried 10-Gbit/s DPSK phase-modulated data.
• The system proved inherently scalable in modulation speed and channel number.

Conclusions:

• The proposed scheme offers a scalable solution for multichannel optical data regeneration.
• This approach satisfies the multichannel requirement for phase-only regeneration.
• The technology has the potential for widespread adoption in advanced communication systems.