What question did this study set out to answer?

To model two-photon absorption-induced free carrier absorption in silicon Raman amplifiers and determine the threshold conditions required to produce net optical gain.

January 1, 2004Optics ExpressOpen Access

Influence of nonlinear absorption on Raman amplification in Silicon waveguides

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Authors

RCR. ClapsOEpic Semiconductors (United States)VRVarun RaghunathanIndian Institute of Science Bangalore DDDimitris DimitropoulosUniversity of Ioannina

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Implication

Modeling study demonstrates how nonlinear absorption limits optical gain in silicon waveguides, highlighting carrier lifetime and propagation loss as key performance constraints.

Key Points

To model two-photon absorption-induced free carrier absorption in silicon Raman amplifiers and determine the threshold conditions required to produce net optical gain.
Simulated the interaction between two-photon absorption (TPA) and generated free carrier absorption within silicon waveguides.
Calculated effective Raman gain coefficients while accounting for spectral broadening induced by the optical pump.
Demonstrates that two-photon absorption and secondary free carrier absorption severely limit the net optical gain achievable in silicon waveguides.
Shows that achieving positive net gain depends primarily on minimizing free carrier lifetime, reducing linear propagation losses, and mitigating pump-induced broadening.

Cite This Study

Claps et al. (2004) studied this question.

synapsesocial.com/papers/6a70aebc439bab0cabc3467f https://doi.org/10.1364/opex.12.002774

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Implication

Modeling study demonstrates how nonlinear absorption limits optical gain in silicon waveguides, highlighting carrier lifetime and propagation loss as key performance constraints.

Influence of nonlinear absorption on Raman amplification in Silicon waveguides

Discussion

Member takes

Implication

Key Points

Cite This Study

Influence of nonlinear absorption on Raman amplification in Silicon waveguides

Discussion

Member takes

Implication

Key Points

Cite This Study

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