Mechanism for stable, ultra-flat multiwavelength operation in erbium-doped fiber lasers employing intensity-dependent loss
✍ Scribed by Xinhuan Feng; C. Lu; H.Y. Tam; P.K.A. Wai; D.Y. Tang; Bai-ou Guan
- Book ID
- 104074976
- Publisher
- Elsevier Science
- Year
- 2012
- Tongue
- English
- Weight
- 273 KB
- Volume
- 44
- Category
- Article
- ISSN
- 0030-3992
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✦ Synopsis
We study a mechanism to attain stable and ultra-flat multiwavelength oscillations in erbium-doped fiber lasers (EDFLs). The key concept is to introduce intensity-dependent loss (IDL) into the laser cavity, which can effectively suppress the mode competition in the homogeneously broadened gain medium and ensure a uniform power distribution over wavelengths via the gain-clamping effect. The technique was successfully demonstrated by employing a nonlinear optical loop mirror (NOLM) in erbium-doped fiber laser cavity. Based on the experimental results, further experimental investigation and theoretical analysis are carried out to show the effectiveness of the gain-clamping mechanism in realizing the multiwavelength operation of the EDFL.