Simple and efficient L-band erbium-doped fiber amplifiers for WDM networks

Choi, Hee-Byoung; Oh, Jung Mi; Lee, D; Ahn, Seong Joon; Park, B.S; Lee, S.B

doi:10.1016/s0030-4018(02)02076-x

Cited by 17 publications

(5 citation statements)

References 10 publications

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“…Hence, wide-band optical amplifiers with flat gain are being developed. Erbium-doped fiber amplifiers (EDFAs) are among them; they are widely used and have high gain, low noise figure, wide bandwidth, and high efficiency [6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Optimization with genetic algorithm of temperature-dependent fiber length of L-band EDFA gain

Yücel

Mustafa²

2016

Turk J Elec Eng & Comp Sci

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Erbium-doped fiber amplifiers (EDFAs) have great importance in long-distance communication. It is required to have equal gain for all signals that are transferred and to avoid loss in the receiver of long-distance communication systems. However, temperature dependence changes the output spectrum of the designed gain-flattening systems. In this study, each erbium-doped fiber (EDF) length of a two-stage L-band EDFA has been optimized using a genetic algorithm method; because of the temperature dependence of EDFAs, there is no general rule. Thus, a simple, fast, dynamic, and highly accurate model has been developed and obtained for different EDF lengths that will fix gain along the L-band. The results have been shown to be very compatible with the previously obtained numerical values.

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Section: Introductionmentioning

confidence: 99%

Optimization with genetic algorithm of temperature-dependent fiber length of L-band EDFA gain

Yücel

Mustafa²

2016

Turk J Elec Eng & Comp Sci

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“…In L-band EDFA, the power conversion efficiency (PCE) was too low for obtaining the higher gain, because it was far from the erbium ion absorption band. In addition, several techniques to expand the L-band gain were demonstrated, such as utilizing unwanted C-band amplified spontaneous emission (ASE) [23], employing the double-pass configuration [30], [31], and applying reflection-type EDFA with grating [32].…”

Section: Introductionmentioning

confidence: 99%

Investigation of Broadband S-Band to L-Band Erbium-Doped Fiber Amplifier (EDFA) Module

Yeh¹

2015

Some Advanced Functionalities of Optical Amplifiers

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This chapter presents three sections that describe the broadband S-band to L-band erbium-doped λiber ampliλier modules. In the λirst section, an S-band μain-clamped erbiumdoped λiber ampliλier EDF" module, employinμ a λiber "raμμ μratinμ F"G to act as a reλlected element λor μeneratinμ a saturated tone injected into the EDF" module by usinμ λorward optical λeedback method, is proposed. Moreover, the output perλormance oλ the μain and noise λiμure NF in the proposed μain-clamped S-band EDF" has been discussed in the wavelenμth ranμe oλ -nm. In the second section, we demonstrate experimentally a μain-λlattened two-staμe erbium-based λiber ampliλier E"F" module, which is composed oλ by an erbium-doped waveμuide ampliλier EDW" and a C-band EDF" in serial structure. In an operation ranμe oλ -nm, the entire μain is larμer than d" and the observed NF is between . and . d". Moreover, ± . d" maximum μain variation is also obtained λor the input siμnal power oλ -d"m. Hence, the proposed λiber ampliλier not only enhances the μain but also achieves the λlatness in the wavelenμth reμion. In the λinal section, a broadband hybrid two-staμe λiber ampliλier, which is composed by a C-band EDF" and a C-band semiconductor optical ampliλier SO" in serial scheme, is investiμated experimentally. Here, we only use a m lonμ erbium-doped λiber EDF servinμ as a preampliλier to increase the μain and reduce the noise λiμure. Thereλore, the proposed hybrid ampliλier achieves a nm eλλectively ampliλica-tion oλ -nm λrom S-to L-band . In addition, the output perλormance oλ μain and NF in the proposed λiber ampliλier has also been discussed.

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“…In L-band EDFA, the power conversion efficiency (PCE) is too low to get a high gain, because it is far from the erbium ion absorption band. Therefore, several methods to improve the Lband gain had been proposed, such as applying unwanted C-band amplified spontaneous emission (ASE) [12], using the double-pass configuration [17,18] and reflection-type EDFA with fiber grating [19].…”

Section: Introductionmentioning

confidence: 99%

Utilizations of EDFA and SOA in series for broadband gain amplification

Yeh¹,

Chi²

2007

Laser Phys. Lett.

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Abstract:A broadband hybrid two-stage fiber amplifier module, constructed of an erbium-doped fiber amplifier (EDFA) and a semiconductor optical amplifier (SOA) in series, is proposed and investigated experimentally. In the proposed amplifier, a short length erbium-doped fiber (EDF) was used in first stage for the pre-amplifier to increase the gain and reduce the noise figure. Therefore, the proposed hybrid amplifier not only enhances gain value, but decreases the noise figure. Moreover, the proposed amplifier can achieve 110 nm amplification bandwidth between 1500 and 1610 nm, when the entire gain are large than 11 dB and noise figure are less than 8 dB for −25 dBm input saturation power. Moreover, the performance of gain and noise figure in the proposed fiber amplifier has also been discussed.

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Simple and efficient L-band erbium-doped fiber amplifiers for WDM networks

Cited by 17 publications

References 10 publications

Optimization with genetic algorithm of temperature-dependent fiber length of L-band EDFA gain

Optimization with genetic algorithm of temperature-dependent fiber length of L-band EDFA gain

Investigation of Broadband S-Band to L-Band Erbium-Doped Fiber Amplifier (EDFA) Module

Utilizations of EDFA and SOA in series for broadband gain amplification

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