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高掺铒光纤
商品货号:ECS000967
商品品牌:Thorlabs
详细介绍
Highly Doped Erbium Fiber Overview
Thorlabs offers a wide range of highly doped erbium fibers suitable for fiber lasers and amplifiers operating in the 1.53-1.61µm wavelength region. These fibers cover broad application field ranging from telecommunication amplifiers (EDFAs) to high power PON/CATV boosters and ultra-short pulse amplifiers used in instrumentation, industrial and medical applications. Large-Mode-Area (LMA) Double Cladding Erbium fibers are also available on request. These highly doped fibers have a core size from 20 to 30 microns with a 125 micron cladding.
Stocked Highly Doped Erbium Fibers
Liekki Er16-8/125 is a large mode area (LMA) erbium doped fiber suitable for high power output amplifiers (output power of 25dBm or more). Good spliceability, excellent power conversion efficiency, and excellent spectral reproducibility and consistency make this fiber the choice for today's high power output amplifiers used for example in CATV and PON applications.
Liekki Er30-4/125 is a highly doped erbium fiber designed for C and L-band amplifiers and ASE sources. This fiber has demonstrated the highest power conversion efficiency available in L-band: better than 50% for a typical fiber length of 20m.
Liekki Er40-4/125 is a highly doped erbium fiber for L-band amplifiers requiring very low level of PMD and non-linear effects. The typical fiber length per application is about 15m.
Liekki Er80-4/125 is a very highly doped erbium fiber for fiber lasers and amplifiers. High erbium concentration reduces required application fiber length considerably while providing strong gain and reduced non-linear effects.
Liekki Er80-8/125 is a large mode area single mode erbium doped fiber suitable for high power amplifiers and lasers (output power of 25dBm or more). Good spliceability, high doping and large core makes this fiber ideal for high peak power pulse amplification in the eye-safe 1.5μm wavelength region. Fiber can be used also with 980nm pumps.
Liekki Er110-4/125 is a highly doped erbium fiber for fiber lasers. High erbium concentration reduces required application fiber length while providing strong gain and reduced non-linear effects

 

Erbium Doped C & L Band Fibers Overview
Erbium doped fiber amplifier technology continues to progress at an astonishing rate with commercial systems now in routine service around the globe. With the ever increasing demand for extra bandwidth the development and deployment of amplifiers operating in the 'L-band' has been rapid and extensive.

MetroGain™ - "A Fiber Optimized For Use In The 'L - Band"
To shift the gain curve into the 'L-band' long gain sections have conventionally been required. These could be over 100 meters in length providing both fiber
management and cost issues. MetroGain™ has a new core composition with increased erbium concentration. At the pump wavelength of 980nm the absorption is of the order of 12dB/m. The co-dopants incorporated in the fiber core ensure that with the relatively high levels of rare earth negligible clustering occurs. The result is a high absorption high efficiency erbium doped fiber. The gain profile is intrinsically flat.
The NA for this fiber is in the range 0.21 - 0.23. This has been found to give good modal overlap of the pump with the doped region of the fiber whilst still maintaining excellent splice characteristics.

High Power Short 'C-Band' Amplifiers
The fiber has been evaluated in an amplifier incorporating a very high power nominally 1480nm pump source. The pump input into the gain section was in excess of 1.5W. An output of 28.5dB/m was achieved with an input comprising four signals loading the amplifier with a total of 11.5dB/m. The inputs were between 1545 and 1560nm. The length of gain fiber required to achieve this was less than 5 meters.

Fiber Lasers And ASE Sources.
The high absorption of the MetroGain™ makes it an ideal choice for fiber lasers and ASE sources. Very short cavity lengths for fiber lasers can be realized and
consequently pulse distortion is minimized.
Features and Benefits
  • Excellent geometrics properties provide
    very low birefringence and excellent splice characteristics
  • Core / Cladding concentricity ≤0.5µm
  • Dual Acrylate coating
  • Splice loss to SM fiber of pump laser ≤0.1dB
  • Splice loss to SMF-28 fiber ≤0.15dB
Stocked Erbium Doped C & L Band Fibers
M5-980-125 MetroGain™ 5 fiber delivers excellent performance in 1 - 16 channel systems in terms of both conversion efficiency (> 70% quantum efficiency) and noise figure (< 5 dB) that is achieved routinely in commercially-produced EDFAs. MetroGain™ 5 has a typical gain-length of 8 - 14 meters and overall performance is relatively insensitive to small changes in fiber length - simplifying EDFA manufacture.
M12-980-125 MetroGain™ 12 fiber delivers excellent performance in 1 - 16 channel systems in terms of both conversion efficiency (> 70% quantum efficiency) and noise figure (< 5 dB) that is achieved routinely in commercially-produced EDFAs. on the other hand, not only provides the ultimate in cost-effectiveness, with typical gain-lengths of 4 - 6 meters, but can also be configured to deliver excellent L-band performance1. This exceptionally short gain-length makes MetroGain 12 perhaps the ultimate 'Metro' fiber.
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