Amplified spontaneous emission in cladding-pumped l-band erbium-doped fiber amplifiers

Mikko Söderlund, Simo Tammela, Pekka Pöyhönen, Matti Leppihalme, Nasser Peyghambarian

Research output: Contribution to journalArticleScientificpeer-review

12 Citations (Scopus)


Propagation of amplified spontaneous emission (ASE) in cladding-pumped long-wavelength-band erbium-doped fiber amplifiers (EDFAs) is analyzed numerically. Forward and backward ASE power dependence on cladding area is analyzed for both pumping directions. ASE power propagating counterdirectionally to the pump is found to experience strong dependence on the cladding area. Increasing the cladding area results in more uniform pump distribution along the EDF, preventing short-wavelength gain and ASE buildup. Quantum conversion efficiency in cladding-pumped L-band EDFAs is discussed.
Original languageEnglish
Pages (from-to)22-24
JournalIEEE Photonics Technology Letters
Issue number1
Publication statusPublished - 2001
MoE publication typeA1 Journal article-refereed


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