Selection of energy optimized pump concepts for multi core and multi mode erbium doped fiber amplifiers

AbstractA comprehensive and integrated exact analytical formalism is presented for erbium-doped fiber amplifiers and lasers (EDFALs) in one single configuration based on solutions of a system of rate and propagation equations represented by a homogenously broadened four band transition scheme while incorporating amplified spontaneous emission and excited state absorption effects. The formalism, under steady-state conditions, concurrently provides considerable insight into physical characteristics underlying phenomena pertinent to EDFALs and allows precise evaluation of behavior exhibited by EDFALs through a judicious selection of pump intensity and fiber length in standard eye-safe low-erbium concentration uniformly doped mono-mode silica glass fibers in co- and counter- propagating directions appropriate to signal, pump and ASE regimes.

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Adaptive Modal Gain Equalization Techniques in Multi-Mode Erbium-Doped Fiber Amplifiers

Journal of Lightwave Technology ◽

10.1109/jlt.2014.2314746 ◽

2014 ◽

Vol 32 (11) ◽

pp. 2133-2143 ◽

Cited By ~ 17

Author(s):

Reza Nasiri Mahalati ◽

Daulet Askarov ◽

Joseph M. Kahn

Keyword(s):

Fiber Amplifiers ◽

Modal Gain ◽

Erbium Doped ◽

Gain Equalization ◽

Multi Mode

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Experimental Measurement of Absorption Coefficients for Effective Erbium-Doping Concentration to Optimize Few-Mode Erbium-Doped Fiber Amplifiers with Low Differential Mode Gain

Photonics ◽

10.3390/photonics8060185 ◽

2021 ◽

Vol 8 (6) ◽

pp. 185

Author(s):

Yan Xu ◽

Baojian Wu ◽

Xinrui Jiang ◽

Haomiao Guo ◽

Feng Wen

Keyword(s):

Doping Concentration ◽

Point Of View ◽

Fiber Amplifiers ◽

Efficient Design ◽

Absorption Loss ◽

Differential Mode ◽

Transmission Method ◽

Modal Gain ◽

Analysis Process ◽

Erbium Doped

According to the analytical expression for modal gain of few-mode erbium-doped fiber amplifiers (FM-EDFAs), we propose a method of measuring the absorption loss coefficients of few-mode signals in few-mode erbium-doped fibers (FM-EDFs) by extrapolating the mode–gain curve dependent on the average population inversion. The absorption loss coefficient of an FM-EDF was measured in our experimental platform and used to estimate the effective erbium-ion doping concentration. The feasibility of the extrapolation method was verified by simulation and comparison with the transmission method. Furthermore, the FM-EDFAs with high modal gain and low differential mode gain (DMG) could be optimized by adjusting the FM-EDF’s length and pump power. The analysis process presented here is very useful for the efficient design of FM-EDFAs from a practical point of view.

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Investigations of Different Amplifiers in 16 × 40 Gb/S WDM System

Journal of Optical Communications ◽

10.1515/joc-2017-0092 ◽

2019 ◽

Vol 40 (4) ◽

pp. 341-346

Author(s):

Kulwinder Singh ◽

Karan Goel ◽

Kamaljit Singh Bhatia ◽

Hardeep Singh Ryait

Keyword(s):

Wavelength Division Multiplexing ◽

Fiber Amplifier ◽

Optical Amplifier ◽

Fiber Amplifiers ◽

Erbium Doped Fiber Amplifier ◽

Wavelength Division ◽

Transmission Distance ◽

Erbium Doped ◽

Eye Opening ◽

Eye Closure

Abstract Different fiber amplifiers such as semiconductor optical amplifier, erbium-doped fiber amplifier and erbium ytterbium-co-doped fiber amplifier (EYCDFA) are investigated for 16×40 GB/s wavelength division multiplexing system. Various performance parameters including Q-factor, bit error rate, jitter, eye opening and eye closure are observed and analyzed. It is reported that EYCDFA is a better choice among the tested amplifiers. The proposed system is also investigated in terms of transmission distance.

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