Pump light can be introduced into the rare earth doped fiber via a tapered fiber bundle tfb in a copropagating or counterpropagating manner relative to the seed laser signal from the radiation source module 200. The software rp fiber power can be used for analyzing and optimizing fiber amplifiers. The system used to simulate the double clad fiber amplifier counterpumped is shown in figure 5. The optilab eydfa33r erbium ytterbium doped fiber amplifier eydfa is a highpower, versatile amplifier designed for catv networks, optical communication and other generalpurpose optical applications. Due to the selective reflection of the backward ybband amplified spontaneous emission yb ase by the fbg, a copump. Based on multimode pumping eryb double clad fiber technology, eydfa is designed to produce high output power up to 17 dbm. More than 10 w of amplified power can be obtained using an 8mlong fiber with 25 w of pump power. We present model calculations of gain at 1550 nm for eryb double clad amplifiers as a function of pump power, signal input power, fiber length and temperature. New products claddingpumped optical fiber amplifier. Based on multimode pumping eryb double clad fiber technology, eydfa36m is designed to produce high output power up to 36 dbm. Raja ahmad, martin rochette, and stephane chatigny department of electrical and computer engineering, mcgill university, montreal, qc h3a 2a7, canada.
Eryb doped double clad fiber amplifier request pdf. Performance characteristics adopts eryb codoped doubleclad fiber technology. In the next case, the ytterbiumdoped fiber is double clad. For cw eydfas, a novel initial guess method and a robust algorithm are proposed to ensure the convergence of the boundaryvalue problems involved in the solution of the numerical model. Based on multimode pumping eryb double clad fiber technology, eydfa33r is designed to produce high output power up to 33 dbm. China 8 ways jdsu 1550nm high power edfa weyz china. Catv, 1550nm optical amplifier, catv amplifier manufacturer supplier in china, offering catv 8 output port highpower1550nm fiber amplifier edfa, the best china saw filter modulator with high quality, catv epon onu wep3201 dd and so on. The multimode fiber manufacturing imperfections and the components misalignments can be taken into account to assess the performance and optimize the. An acoustic optical modulator aom was used as pulse picker to lower. China catv 8 output port highpower1550nm fiber amplifier. We report on singlefrequency all fiber amplifiers based on eryb doped p 2 o 5al 2 o 3 sio 2 fibers. Highly efficient eryb codoped doubleclad fiber amplifier. Mar 19, 2018 the fiber laser uses a master oscillator power amplifier configuration that is composed of a direct modulated ldsoa combination seeder and er doped fiber amplifier chains. The company says the release improves the overall usability of.
Numerical methods for highpower erybcodoped fiber amplifiers. Osa highly efficient erybcodoped fiber amplifier with an. Yb doped double clad fiber nuferns proprietary rare earth doping technology is used to deliver er. Modeling claddingpumped eryb fiber amplifiers sciencedirect. May 22, 2012 the optical amplifier 330 includes a rare earth doped fiber such as e. By using a dual stage design, eydfapa36m provides optical gain of up to 50 db with optional pre amp, while maintaining low noise figure nf below 5 db. Mar 09, 2012 search the leading research in optics and photonics applied research from spie journals, conference proceedings and presentations, and ebooks.
High efficiency, actively qswitched eryb fiber laser. Labelfree photoacoustic microscopy for invivo tendon. Singlemode operation of a coiled multimode fiber amplifier. Numerical results are presented for claddingpumped eryb doped fiber amplifiers that illustrate how to reach the conversion efficiency limited by the quantum defect, how power conversion and the intensity of the ase depend on operating wavelength, and how secondary loss mechanisms such as distributed loss, upconversion, and pairingclustering. Highly efficient eryb codoped doubleclad fiber amplifier with an. Doubleclad rareearthdoped fiber laser is a new generation of high power solidstate lasers. We demonstrated this method by constructing an eryb doped, doubleclad, singlemode fiber amplifier with an output power of 530 mw and a polarization extinction ratio of 17 db when seeded with linearly polarized light at a wavelength of approx1. Yb codoped fibers with industry leading tolerances on the key spectroscopic parameters. Highpulseenergy fiber laser is an eyesafe source for lidar. Optilabs eydfa30 is a high power fiber amplifier that utilizes multimode laser pumping, allfiber combiner and erbiumytterbium doubleclad, largecore fiber technologies to achieve high output power in conjunction with low cost. China 8 ways jdsu 1550nm high power edfa weyz china edfa. The software rp fiber power can be used for calculating a wide range of.
Er yb codoped fiber amplifier is high end professional equipment, and its installation and debugging must be operated by special technician. Peak power up to 1120 w at 1545 nm for 108 ns pulse duration has been obtained with 18 % slopeefficiency. See a demo case for a claddingpumped yb amplifier definition. These 8w laser diodes from jdsu now lumentum are designed for eryb codoped double clad fiber amplifiers. By using a dual stage design, eydfa36m provides optical gain of up to 36 dbm with optional preamp, while maintaining low noise figure nf below 5 db. This ensures the essential lottolot reproducibility required for volume manufacturing. Pump light can be introduced into the rare earth doped fiber via a tapered fiber bundle tfb in a copropagating or counterpropagating manner relative to. Outdoor 1550nm eryb codoped optical amplifierhangzhou. Optical design software zemax was used to choose the focal distance of aspherical lenses for maximization of the pump and signal coupling.
Claddingpumped fiber amplifier based on a doubleclad fiber with freespace coupling. To set the ytterbiumdoped fiber component to work as doubleclad, the parameter doubleclad fiber enhanced tab has to be set to true and the value of the pump reference has to be specified. Experimental results of high power doublepass, double clad eydfa. Recently there have been significant developments in the area of cladding pumped doubleclad dopedfibers for very high power fiber lasers and amplifiers. Space division multiplexing sdm, a way of transmitting data over multiple cores embedded in single strand of fiber or multiple modes of a fewmode fiber, has generated much interest as a potential means for enhancing the capacity of optical transmission systems. Due to the selective reflection of the backward ybband amplified spontaneous emission yb ase by the fbg, a copumppropagating yb. We have demonstrated single frequency amplification 540hz linewidth to 207w average output power with 49. Multiple applications benefit from advances in highperformance er. Doubleclad fibers typically have a lowna single mode or largemodearea lma core for the emitted. The laststage amplifier for the millijoulelevel allfiber laser system from advalue photonics uses a silicateglass doubleclad polarizationmaintaining eryb doped optical fiber see fig. Cwi2 spectrally wide and highpower eryb fiber amplifier. In the next case, the ytterbiumdoped fiber is doubleclad. Us patent for ldv system for improving the aim of a. Abstract we present model calculations of gain at 1550 nm for eryb doubleclad amplifiers as a function of pump power, signal input power, fiber length, and temperature.
Laser simultaneous wavelengths tuning is performed by fiber bragg gratings compressionstrain. And this line of fiber amplifiers has been optimized for superior output power stability and the exceptionally low noise figures demanded by catv applications. Simulation and experiment of erbiumytterbium codoped. Coractive er yb doped fibers are available in singleclad or doubleclad configurations. Active and passive optical components for communications. Read this manual carefully before operating to avoid damage to equipment caused by fault operation or accident harm to the operator. To set the ytterbiumdoped fiber component to work as double clad, the parameter double clad fiber enhanced tab has to be set to true and the value of the pump reference has to be specified. The system used to simulate the doubleclad fiber amplifier counterpumped is shown in figure 5. Typically, they are based on ytterbiumdoped doubleclad fibers for signals in the. Simulation and experiment of erbiumytterbium codoped doubleclad fiber amplifier article in microwave and optical technology letters 545. Doped fiber amplifiers dfas are optical amplifiers that use a doped optical fiber as a gain medium to amplify an optical signal. The fbg was inscribed on a piece of doubleclad fiber with a center wavelength of 1032 nm. The opticaltooptical efficiencies of such devices are typically less than 30%. July 20, 2005 ossining, ny rsoft design group, a provider of photonics design automation software, has released its optsim 4.
Schematic setup of a simple erbiumdoped fiber amplifier. Doubleclad eryb codoped fibers eydfs are still the first choice of gain media for highpower fiber sources in this band, no matter assessed in. Spectrally wide and highpower eryb fiber amplifier for 40 gbs telecommunications applications. Osa highly efficient erybcodoped fiber amplifier with. The second amplifier stage for mediumpower amplification output power of several watts can be still based on a singlemode doubleclad fiber. Recent progress of erbiumdoped fiber amplifiers and their components masaru fukushima and jutaro miura model results of eryb double clad fiber amplifier z. The eydfa37bm incorporates two stages of amplification based on multimode pumping technology using eryb double clad fiber. Thulium doped fiber amplifiers have been used in the sband 14501490 nm and praseodymium doped amplifiers in the 0 nm region. Coractives er yb codoped fibers are particularly attractive due to their highly efficient energy transfer that makes them one of the most efficient er yb doped fiber solution available on the market.
Rsoft upgrades optical design package light reading. Rp photonics encyclopedia erbiumdoped fiber amplifiers. Application singlemode fiber 1550 amplification network ftth network catv network 2. Investigation of coherent amplification with a semiconductor optical amplifier employed in a swept source oct system.
We believe this is the highest reported efficiency from a high power 9xxnm pumped er. Dec 16, 2014 we present effective methods for the numerical simulation of highpowerpumped continuouswave cw and pulsed erbiumytterbiumcodoped fiber amplifiers eydfas. Its core is the erbiumdoped optical fiber, which is typically a singlemode fiber. Eryb erbium ytterbium double clad doped fibers, eryb fiber. The software rp fiber power can be used for calculating a wide range of properties of doubleclad fibers and of amplifiers or lasers based on them. The most common example is the erbium doped fiber amplifier edfa, where the. Us patent for ldv system for measuring wind at high altitude. By introducing a linear resonant cavity formed by a pair of higlection doubleclad fiber bragg gratings, the ybase problem of highpower pumped eydfas can be resolved and the efficiency of the amplifier can be notably improved. The optical gain of the amplifier exceeds 35 db via the edfa preamplifier, which allows a low input signal level of 20 dbm. Pdf simulation of ytterbium doped double clad fiber laser. Coractives eryb codoped fibers are particularly attractive due to their highly efficient energy transfer that makes them one of the most efficient eryb doped fiber solution available on the market. Clad fiber laser output power by using liekki application designer software. Pdf erbium and ytterbium doped fibers are usually used as optical. Rp photonics encyclopedia doubleclad fibers, cladding.
It primarily confirms the reliability of the basic simulation software used in this thesis. Epilogs fiber laser series is your solution for etching and marking all types of bare metals and plastics. In this letter, a highpower eryb codoped fiber amplifier eydfa with a higlection ybband fiber bragg grating fbg at the pump end is experimentally investigated. Highpower 1550nm opev1215 series fiber amplifier manual 1. Claddingpumped multicore fiber amplifier for space. An acoustic optical modulator aom was used as pulse picker to lower the seed repetition rate for the final power amplifier. Dc erbium erytterbium yb doped optical fiber amplifier eydfa was. The fiber laser uses a master oscillator power amplifier configuration that is composed of a direct modulated ldsoa combination seeder and erdoped fiber amplifier chains. In contrast, basic designs of ybcodoped edfas eydfas can provide significantly higher. Highpower 1550nm fiber amplifier manual transmitter op.
The dualstage optical amplifier which enabled dense wave division multiplexing dwdm, was invented by stephen b. The signal to be amplified and a pump laser are multiplexed into the doped fiber, and the signal is amplified through interaction with the doping ions. Edfa, 1550nm edfa optical amplifier, 1550nm manufacturer supplier in china, offering 8 ways jdsu 1550nm high power edfa weyz, the best china saw filter modulator with high quality, catv epon onu wep3201 dd and so on. The calculated gain is 20 db for a 6w pump for a 20mw input signal at 25 c. Doped fiber amplifiers for other wavelength ranges. Rareearth doped, doubleclad fibers offer large volumes for optical pumping, with the potential for improved performance in applications such as catv, lidar, and medical systems. We present effective methods for the numerical simulation of highpowerpumped continuouswave cw and pulsed erbiumytterbiumcodoped fiber amplifiers eydfas. Customized fttx pon high power 1550nm eydfa, 8 ports based on multimode pumping eryb double clad fiber technology, eydfa is designed to produce high output power up to 23 dbm. The realization of such wattclass fiberoptic amplifiers development of eryb codoped fiber for highpower optical amplifiers by keiichi aiso, yoshio tashiro 2, tsuneo suzuki 3 and takeshi yagi the increasing capacity of wavelengthdivision multiplexing wdm transmission. In this approach the fiber core is heavily doped with the active lasing ion e. Modeling claddingpumped eryb fiber amplifiers request pdf.
Us patent for ldv system for measuring wind at high. For high power fiber laser application, ytterbium doped double clad. Chen and others a novel fabrication technology of a polymer optical waveguide and its application akira fujii and others lowcost electrooptical package for use with pcb. Features the optical fiber amplifier developed here by furukawa electric is, as shown in figure 1, of twostage configuration. Spectrally wide and highpower eryb fiber amplifier for 40 gbs. A tunable dualwavelength qswitched ring cavity fiber laser with eryb doubleclad fiber is presented. Optical fibers for highpower eyesafe lasing applications. At the same time, as a part of research and development programs in the. Simulation and experiment of erbiumytterbium codoped double. Pump light can be introduced into the rare earth doped fiber via a tapered fiber bundle tfb in a copropagating or counterpropagating manner relative to the. These devices are designed as uncooled multimode laser diode pump modules for next generation high power erbium doped fiber amplifier applications. Print to the laser directly from any graphic software program for easy job setup, and etch an entire table full of parts at one time. View program details for spie photonics europe conference on fiber lasers and glass photonics. Metal engraving and plastic marking laser machines.
The data sheet attached below lists the following specifications and features. This paper presents a new computational strategy for efficient and stable modeling of rareearthdoped fiber amplifiers and illustrates the strategy with results for a. Yb codoped fiber with a core diameter of 17 m and a clad diameter of 200 m nufern. The numerical simulation is an important approach in the configuration design and parameter. A typical setup of a simple erbiumdoped fiber amplifier edfa is shown in figure 1. In the shown case, the active fiber is pumped with light from two laser diodes bidirectional pumping, although unidirectional pumping in the forward or backward direction codirectional and counterdirectional pumping. Highpulseenergy fiber laser is an eyesafe source for. Rp photonics encyclopedia tutorial fiber amplifiers, part. Coractive eryb doped fibers are available in singleclad or doubleclad configurations.
Commerciallyavailable fiber lasers operating in the 2. A highpower er yb codoped fiber amplifier eydfa with an ybband resonant cavity is investigated. The influence of various design and fiber parameters on the performance of. Latest development of high power fiber lasers in spi. Imaging retinal nerve fiber bundles at ultrahighspeed and ultrahighresolution using oct with adaptive optics. Development of eryb codoped fiber for highpower optical. Osa dualwavelength tunable eryb doubleclad doped q. The optical amplifier 330 includes a rare earth doped fiber such as e. Rp photonics encyclopedia tutorial fiber amplifiers. Jul 20, 2005 july 20, 2005 ossining, ny rsoft design group, a provider of photonics design automation software, has released its optsim 4. Valley, modeling claddingpumped eryb fiber amplifiers, opt.
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