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Phase control of absorption, dispersion and gain of weak signal field in erbium doped optical fiber

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Abstract

We have studied the optical response of a weak signal field in a three-level quantum system consisting of the energy levels of Er3 + ions doped in ZrF4-BaF2-LaF3-AlF3-NaF (ZBLAN) fiber material. It has been shown that absorption and gain can be significantly modified by changing the conditions of phase-coherence induced in the system by the resonant fields. The role of broad-band incoherent pumping on gain equalization is investigated. Our results highlight gain leveling over a substantial range of frequencies at a particular condition of dynamically induced phase-coherence. On controlling phase-coherence, the propagation of signal field can be achieved either in subluminal or in superluminal regime.

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Acknowledgement

B. K. Dutta would like to thank the University Grants Commission, New Delhi, India for the financial assistance (Grant No.: PSW-164/11-12).

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Authors and Affiliations

  1. Department of Physics and Technophysics, Vidyasagar University, Midnapore, 721 102, W. B., India

    Indranil Bayal & Prasanta Kr Mahapatra

  2. Department of Physics, J. K. College, Purulia, 723 101, W. B., India

    Bibhas Kr Dutta

  3. Department of Physics, P. K. College, Contai, Purba Medinipur, 721 401, W. B., India

    Pradipta Panchadhyayee

  4. West Bengal University of Technology, Kolkata, 700 064, W. B., India

    Prasanta Kr Mahapatra

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  1. Indranil Bayal
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Correspondence to Pradipta Panchadhyayee.

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Bayal, I., Dutta, B.K., Panchadhyayee, P. et al. Phase control of absorption, dispersion and gain of weak signal field in erbium doped optical fiber. J Opt 41, 235–242 (2012). https://doi.org/10.1007/s12596-012-0087-8

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  • DOI: https://doi.org/10.1007/s12596-012-0087-8

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