We Experimentally Demonstrate the Various Intermodal and Intramodal Four-Wave Mixing Processes in a Few-Mode Fiber with Three Modes using Non-Degenerate Pumps. We Distinguish the Processes by Calculating their Phase Mismatch and Identify the Intermodal Spontaneous Four-Wave Mixing Process that Generates Entangled Photon Pairs in Various Modes. We Achieve This using Continuous-Wave Beams and the Seeding Technique Due to the Low Efficiency of the Spontaneous Four-Wave Mixing Effect in the Fiber. We Seeded the Stokes and Anti-Stokes Waves and Measured the Spectral Content of Each Mode While Moving the Seed Away from the Perfect Phase-Matched Condition in the Fiber under Test. We Observe that the Closer the Seed Gets to the Pumps, the Higher the Efficiency of the Four-Wave Mixing Process.


Electrical and Computer Engineering

Keywords and Phrases

Few-mode fiber; Nonlinear fiber optics; Optical fiber communication; Optical fiber dispersion; Optical fiber polarization; Optical fiber theory; Optical fibers; Optical frequency conversion; Photonics; Quantum entangled laser source; Spontaneous Four-wave mixing

International Standard Serial Number (ISSN)

1941-0174; 1041-1135

Document Type

Article - Journal

Document Version


File Type





© 2024 Institute of Electrical and Electronics Engineers, All rights reserved.

Publication Date

01 Jan 2024