Proposal for in-fiber generation of telecom-band polarization-entangled photon pairs using a periodically poled fiber

L. G. Helt, Eric Y. Zhu, Marco Liscidini, Li Qian, J. E. Sipe

Research output: Contribution to journalArticle

23 Citations (Scopus)


We treat spontaneous parametric downconversion in a periodically poled fiber, quasi-phase matched to allow for the generation of photon pairs at wavelengths within the low-loss telecommunications window. For an appropriate pump polarization, the unusual properties of such a fiber's effective x 2 result in a biphoton wave function that is symmetric upon simultaneous exchange of downconverted photon frequencies and polarizations and that is nonzero over a wide range of downconverted frequencies. This could lead to a significant technical simplification of sources of in-fiber telecom-band polarization-entangled photons.

Original languageEnglish
Pages (from-to)2138-2140
Number of pages3
JournalOptics Letters
Issue number14
Publication statusPublished - 15 Jul 2009
Externally publishedYes


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