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Advanced Topics on Erbium Doped Fibers for High Performance Amplifiers

From OFS Specialty Photonics Division
 

 
Erbium doped fiber amplifiers have been widely deployed for signal amplification in optical transmission systems. High performance amplifiers require erbium doped fiber with high power conversion efficiency and consistent flat gain spectrum. In addition, all impairments associated with EDF must be under good control. This paper reviews the current status and recent progress on erbium doped fibers, illustrates C and L-band spectral characteristics resulting from different doping compositions, presents some approaches for efficient high power amplifiers, and discusses some EDF nonlinear effects with examples. Erbium-doped fiber amplifiers (EDFA) continue to be widely used in long-haul/metro transport systems and CATV applications because they offer cost effective solutions for optical amplification (1). High performance EDFAs require precise control of doping composition of EDFs to maintain consistent and flat EDFA spectral gain shape. This requires a thorough understanding of EDF's spectral characteristics as a function of dopant type, concentration, and waveguide design (2).
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Topics of Interest
Fusion splicing erbium doped fiber (EDF) to other single mode fibers has become more critical as the required overall insertion loss for erbium doped fiber amplifiers (EDFA) has significantly... (Read More)
6.7 Optical Amplifiers for Communications Systems Optical amplifiers are widely used by the long-haul transmission systems to compensate for the scattering and absorption losses in the optical... (Read More)
4.4.2 Optical Amplifiers and Regenerators 4.4.2.1 Amplifiers In Chapter 2 (Section 2.17), we described the physics and technology of optical amplification. Amplification is required to overcome signal... (Read More)
Scattering and absorption mechanisms in an optical fiber cause a progressive attenuation of light signals as they travel along a fiber. At some point the signals need to be amplified so that the... (Read More)
10.1  INTRODUCTION In Chapter 9 we discussed erbium-doped fiber amplifiers, which are the most important optical amplifiers. Since the EDFAs work on the principle of population inversion... (Read More)
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