An L‐band‐cascaded erbium‐doped fiber amplifier for uniform gain without gain equalizing filter

Anthony, Ricky; Lahiri, Rini; Biswas, Sanket

doi:10.1002/mop.28514

Cited by 4 publications

(4 citation statements)

References 9 publications

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“…As further confirmation of the effective amplification process, we analyzed the signal transmission at 960 and 970 nm (Figure b), finding a lower gain in agreement with the spectrum obtained by the ASE characterization (Figure c). Importantly, amplification of ∼14 dB over a length of 8 mm is comparable to or larger than the typical maximum gain obtained in other dye-doped fiber amplifiers , as well as in rare-earth-doped fibers . Considering their small size, these new fibrous systems can be considered as promising media for short-distance and pulsed amplification uses.…”

Section: Resultsmentioning

confidence: 84%

“…Importantly, the amplification of about 14 dB on a length of 8 mm, is comparable or larger than the typical maximum gain obtained in other dyedoped fiber amplifiers 12,38 as well as in rare-earth-doped fibers. 42 Considering their small size, these new fibrous systems could be considered as promising media for short-distance as well as pulsed amplification uses.…”

Section: Resultsmentioning

confidence: 99%

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Electrospun Amplified Fiber Optics

Morello

Camposeo

Moffa

et al. 2015

ACS Appl. Mater. Interfaces

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All-optical signal processing is the focus of much research aiming to obtain effective alternatives to existing data transmission platforms. Amplification of light in fiber optics, such as in Erbium-doped fiber amplifiers, is especially important for efficient signal transmission. However, the complex fabrication methods involving high-temperature processes performed in a highly pure environment slow the fabrication process and make amplified components expensive with respect to an ideal, high-throughput, room temperature production. Here, we report on near-infrared polymer fiber amplifiers working over a band of ∼20 nm. The fibers are cheap, spun with a process entirely carried out at room temperature, and shown to have amplified spontaneous emission with good gain coefficients and low levels of optical losses (a few cm–1). The amplification process is favored by high fiber quality and low self-absorption. The found performance metrics appear to be suitable for short-distance operations, and the large variety of commercially available doping dyes might allow for effective multiwavelength operations by electrospun amplified fiber optics.

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Section: Resultsmentioning

confidence: 84%

Section: Resultsmentioning

confidence: 99%

Electrospun Amplified Fiber Optics

Morello

Camposeo

Moffa

et al. 2015

ACS Appl. Mater. Interfaces

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“…To extend the operating band, long‐wavelength‐band (L‐band, 1570–1610 nm) EDFAs have received much attention since the end of 1990s. Naturally, the gain spectrum of erbium‐doped fiber (EDF) in L‐band is more flat than that in conventional‐band (C‐band, 1525–1565 nm), but the drawback is lower gain efficiency . Two‐stage and dual‐pass configurations have been proved to efficiently enhance the output gain of L‐band EDFAs .…”

Section: Introductionmentioning

confidence: 99%

Multi‐wavelength L‐band gain‐clamped erbium‐doped fiber amplifier with high gain and flatness by using composite FBGS

Yang

Liu

2017

Micro & Optical Tech Letters

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The gain‐clamped erbium‐doped fiber amplifiers (EDFA) can efficiently stabilize the gain fluctuation of signals, but with the price of gain–loss and worsened flatness. In this paper, we theoretically study the relationships between clamping and loss and propose a novel linear‐cavity gain controller based on a pair of composite fiber Bragg gratings (FBGs) to balance gain and clamping, which consist of a uniform FBG with high‐reflectivity and a chirp‐FBG with low‐reflectivity. The comprehensive experiments and comparisons are then conducted in terms of gain, flatness and clamping capability. Under the optimized central wavelength and reflectivity of FBGs, the ±0.1 dB stability of multi‐wavelength signals is achieved in ∼30 dB dynamic range. Moreover, our designed amplifier simultaneously guarantees the high average gain (∼24 dB) and low un‐flatness (∼±0.8 dB) in the range of 1570–1610 nm. This is a very promising technology for practicality of L‐band gain‐clamped EDFAs due to its simple configuration and adjustment. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 59:691–695, 2017

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“…With the continuous increase of traffic, the operating band of EDFA needs to be extended from conventional‐band (C‐band, 1525–1565 nm) to long‐wavelength‐band (L‐band, 1570–1610 nm). The benefits of L‐band EDFA are that it can be easily realized by adding the length of erbium‐doped fiber (EDF) and has a more flat gain spectrum even without any equalizer . Recently, due to the bursty of traffic, the research on gain‐clamping in L‐band EDFAs has received much attention.…”

Section: Introductionmentioning

confidence: 99%

Single‐/Dual‐FBG‐based gain controller of gain‐clamped L‐band erbium‐doped fiber amplifier with high gain and flatness

Yang

Meng

Liu

2016

Micro & Optical Tech Letters

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In this letter, we report a novel fiber Bragg grating (FBG)‐based gain controller to simultaneously flatten and clamp the gain spectrum of a long‐wavelength‐band (L‐band) erbium‐doped fiber amplifier (EDFA). Respectively, the single‐ and dual‐FBG schemes are experimentally conducted and investigated in terms of flatness and dynamic stability with various central wavelengths. The results show that, under a suitable central wavelength of FBGs, the high average gain (over 22 dB) and ±0.1 dB stability in ∼30 dBm dynamic range is together guaranteed in our designed amplifier. In gain‐flatness, dual‐FBG scheme presents a smaller fluctuation (∼0.93 dB) in the range of 1570–1610 nm by accurately adjusting the voltage of PZT driver. Comparatively, single‐FBG scheme is more practical and controls the gain‐fluctuation of EDFA below 1.62 dB in the whole L‐band. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:2168–2171, 2016

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An L‐band‐cascaded erbium‐doped fiber amplifier for uniform gain without gain equalizing filter

Cited by 4 publications

References 9 publications

Electrospun Amplified Fiber Optics

Electrospun Amplified Fiber Optics

Multi‐wavelength L‐band gain‐clamped erbium‐doped fiber amplifier with high gain and flatness by using composite FBGS

Single‐/Dual‐FBG‐based gain controller of gain‐clamped L‐band erbium‐doped fiber amplifier with high gain and flatness

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