Graded index polymer optical fiber amplifiers

Takeyuki Kobayashi, Keisuke Sasaki, Yasuhiro Koike

Research output: Contribution to journalConference articlepeer-review


Gain dynamics such as signal wavelength dependence and pump wavelength dependence for organic dye-doped graded index (GI) polymer optical fiber amplifiers (POFA) are characterized. A Rhodamine B-doped POFA, 1 m in length and 0.3 mm in core diameter, has exhibited more than 20 dB gain at signal wavelengths from 560 nm to 600 nm when optically pumped at 532 nm. The maximum gain of 37 dB was achieved with a Rhodamine B-doped POFA pumped at 550 nm, which was optimum pump wavelength. For an Oxazine 4-doped POFA, signal gain of 20 dB was obtained when pumped at 605 nm. It is shown that pumping at absorption maximum wavelengths optimizes amplifier performance.

Original languageEnglish
Pages (from-to)425/123-430/128
JournalMolecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals
Publication statusPublished - 1998 May 1
EventProceedings of the 1997 8th Sympoisum on Unconventional Photoactive Systems (UPS) - Nara, Jpn
Duration: 1997 May 251997 May 29

ASJC Scopus subject areas

  • Condensed Matter Physics


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