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Phase-sensitive amplification in a single bi-directional PPLN waveguide.

André Albuquerque, Benjamin J Puttnam, Miguel Drummond

|October 10, 2013

Summary

This summary is machine-generated.

This study demonstrates phase-sensitive amplification and regeneration for binary phase-shift keying signals using a bidirectional periodically poled lithium niobate waveguide. High gain was achieved, but stability decreased with increased pumping power.

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Area of Science:

Photonics
Optical Communications
Nonlinear Optics

Background:

Phase-sensitive amplification (PSA) is crucial for optical signal regeneration.
Maintaining signal integrity in high-speed optical networks requires advanced regeneration techniques.

Purpose of the Study:

To investigate phase-sensitive amplification and regeneration of binary phase-shift keying (BPSK) signals.
To explore the use of a single periodically poled lithium niobate (PPLN) waveguide for simultaneous phase correlation and phase-sensitive (PS) operation.

Main Methods:

Utilizing a bi-directionally operated PPLN waveguide.
Employing injection-locking for carrier phase recovery.
Implementing a lead zirconate titanate (PZT) fiber stretcher for path length deviation correction.

Main Results:

Achieved phase-sensitive amplification and regeneration of BPSK signals.
Observed a trade-off between high phase-sensitive gain and device stability.
Demonstrated simultaneous phase correlation and PS operation.

Conclusions:

A single PPLN waveguide can effectively perform PSA and phase regeneration.
High pumping power enhances PS gain but compromises device stability.
The bidirectional PPLN approach offers a promising method for optical signal processing.