Single-stage gain-clamped L-band EDFA with C-band ASE self-oscillation in ring cavity

M. A. Mahdi, Ahmad Ashrif A Bakar, M. H. Al-Mansoori, S. Shaari, A. K. Zamzuri

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

We demonstrate single-stage gain-clamped L-band Er3+-doped fiber amplifier (EDFA) utilizing self-oscilfation modes as the control light. The amplifier structure exploits the characteristics of C/L-band coupler to isolate between lasing modes and L-band signal. The self-lasing cavity modes are obtained without any tunable bandpass filter in the loop and generated from the amplified spontaneous emission in the C-band region. The amplifier configuration has lower noise figures as opposed to a dual-stage partially gain-clamped amplifier. The gain and noise figure fluctuations are less than ± 0.4 dB in the gainclamping region. The transient analysis confirms that the maximum power excursion is less than 03 dB for 10-dB add/drop. A graph is presented. Lasing spectrum of the ASE self-oscillation ar different VOA values, monitored via the 10% port of fused coupler in the feedback loop.

Original languageEnglish
Pages (from-to)126-129
Number of pages4
JournalLaser Physics Letters
Volume5
Issue number2
DOIs
Publication statusPublished - Feb 2008

Fingerprint

aeroservoelasticity
self oscillation
Fiber amplifiers
C band
Noise figure
ultrahigh frequencies
amplifiers
lasing
cavities
fibers
Spontaneous emission
rings
Bandpass filters
Transient analysis
couplers
Feedback
bandpass filters
low noise
spontaneous emission
configurations

Keywords

  • Erbium
  • Gain-clamped
  • Optical fiber amplifier

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)
  • Instrumentation

Cite this

Single-stage gain-clamped L-band EDFA with C-band ASE self-oscillation in ring cavity. / Mahdi, M. A.; A Bakar, Ahmad Ashrif; Al-Mansoori, M. H.; Shaari, S.; Zamzuri, A. K.

In: Laser Physics Letters, Vol. 5, No. 2, 02.2008, p. 126-129.

Research output: Contribution to journalArticle

Mahdi, M. A. ; A Bakar, Ahmad Ashrif ; Al-Mansoori, M. H. ; Shaari, S. ; Zamzuri, A. K. / Single-stage gain-clamped L-band EDFA with C-band ASE self-oscillation in ring cavity. In: Laser Physics Letters. 2008 ; Vol. 5, No. 2. pp. 126-129.
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