Photon-number squeezing with a noisy femtosecond fiber laser amplifier source using a collinear balanced detection technique

Shota Sawai, Hikaru Kawauchi, Kenichi Hirosawa, Fumihiko Kannari

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

We experimentally demonstrate photon-number squeezing at 1.55 μm using a noisy erbium-doped fiber amplifier (EDFA). We employ a collinear balanced detection (CBD) technique, where the intensity noise at a specific radio frequency is canceled between two pulse trains. In spite of substantially large excess noise (>10dB) in an EDFA due to amplified spontaneous emission, we successfully cancel the intensity noise and achieve a shot noise limit at a specific radio frequency with the CBD technique. We exploit two sets of fiber polarization interferometers to generate squeezed light and observe a maximal photon-number squeezing of-2.6dB.

Original languageEnglish
Pages (from-to)25099-25106
Number of pages8
JournalOptics Express
Volume21
Issue number21
DOIs
Publication statusPublished - 2013 Oct 21

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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