Coherent perfect absorption in a weakly absorbing fiber

Ali K. Jahromi, Amy Van Newkirk, Ayamn F. Abouraddy

Research output: Contribution to journalArticle

Abstract

Coherent perfect absorption refers to the interferometric enhancement of absorption in a partially lossy medium upto 100%. This can be achieved without modifying the absorbing medium itself, instead of engineering its photonic environment. Ion-doped fibers are one of the most technologically relevant absorbing materials in optics, which are widely employed in fiber amplifiers and lasers. Realizing complete optical absorption of an incident field in short-length moderately-doped fibers remains a challenge for the cost-effective design of compact fiber lasers. Here, we exploit the concept of coherent perfect absorption to overcome this challenge, whereby two appropriately designed fiber Bragg gratings define a short-length erbium-doped-fiber cavity that enforces complete absorption of an incident field on resonance - -independently of the doped-fiber intrinsic absorption. This approach applies to any spectral window and guarantees the efficient utilization of the fiber dopants along its length, thus, suggesting the possibility of next-generation efficient single-longitudinal-mode fiber lasers for applications in optical communication, sensing, and metrology.

Original languageEnglish (US)
Article number8376000
JournalIEEE Photonics Journal
Volume10
Issue number4
DOIs
StatePublished - Aug 1 2018

Fingerprint

Fiber lasers
fibers
Fibers
fiber lasers
Fiber amplifiers
Erbium
Fiber Bragg gratings
Optical communication
Laser modes
lossy media
Photonics
Light absorption
Optics
Doping (additives)
erbium
metrology
Bragg gratings
optical communication
optical absorption
amplifiers

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

Cite this

Jahromi, Ali K. ; Van Newkirk, Amy ; Abouraddy, Ayamn F. / Coherent perfect absorption in a weakly absorbing fiber. In: IEEE Photonics Journal. 2018 ; Vol. 10, No. 4.
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Coherent perfect absorption in a weakly absorbing fiber. / Jahromi, Ali K.; Van Newkirk, Amy; Abouraddy, Ayamn F.

In: IEEE Photonics Journal, Vol. 10, No. 4, 8376000, 01.08.2018.

Research output: Contribution to journalArticle

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