• Enhancement in the gain recovery of a semiconductor optical amplifier by device temperature control

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    • Keywords


      Semiconductor optical amplifier; gain recovery; assisted-light; optical-pumping-near-transparency.

    • Abstract


      We present a numerical investigation on the temperature dependence of gain recovery, of a semiconductor optical amplifier (SOA). It is shown that the decrease in temperature significantly speed-up the gain recovery of the SOA. Under typical operating conditions, a 20 K reduction in temperature of the SOA results in a decrease of 150 ps in the gain recovery time. A comparative estimation of device temperature and assisted-light power requirements for enhancing the gain recovery has also been carried out. It is found that, a decrease of 8 K in the temperature of the SOA, is as effective in enhancing the gain recovery as injection of 25 dBm assistedlight power in the counter-propagating mode. Our study shows that under moderate current biasing conditions, temperature reduction is a better and convenient option to speed-up the gain recovery of an SOA, than the use of external assisted-light injection, which requires an additional laser source and wavelength division multiplexing(WDM) components for coupling and de-coupling, leading to insertion losses in the communication channel.

    • Author Affiliations



      1. Department of Physics, Indian Institute of Technology Delhi, Hauz Khas, Delhi 110 016, India
    • Dates

  • Pramana – Journal of Physics | News

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