Simulation and design of a multistage 10w thuliumdoped double. The remarkably broad emission spectrum of the 3f 4 h6 transition in tmdoped silica covers about 30 thz 1700 to 2100 nm 710, which is a. The results required were gathered from the software. Thulium doped floridebased fiber amplifier how is thulium.
In the second example, we will show how to model an approximately continuouswave cw interaction in a thuliumdoped material. A thuliumdoped upconversion fiber laser with a threestep excitation scheme has been simulated with the rp fiber power software. Ask rp photonics for any advice concerning the use of rareearthdoped fibers e. The results of gain, noise figure, optical signaltonoise ratio osnr and output power. Theoretical modelling of sband thuliumdoped silica fibre. For the first time we demonstrate a diodepumped hdfa. The thulium ions can be excited to a highlying electronic level 1 g 4. Thulium fibers are used for eyesafe fiber laser applications. In one example, we will amplify a short pulse that is in the nanosecond time range. The 1550nm long pulse single frequency polarization maintaining fiber amplifiers of connet laser are designed for long pulse 200ns2us application.
Thuliumdoped fiber amplifier for optical communications at 2m. In this paper we show the analysis of thulium doped fibre amplifiertdfa gain dependence on pump laser wavelength and thulium doped fibre length. A genetic algorithm is used to optimize the pump scheme parameters in order to achieve the maximum gain or the minimum nonuniformity of the gain spectrum. Highly thuliumdoped silicate glass fibers can be used to develop singlefrequency fiber lasers with 1. In terms of gain saturation, fiber amplifiers are very different from semiconductor optical amplifiers soas. Doped fiber amplifiers for other wavelength ranges. Isolatorfree unidirectional thuliumdoped fiber laser. Oct 10, 2009 a completely spatially and spectrally resolved model of a thulium doped fiber amplifier that, unlike existing models, takes into account the radiation mode structure is proposed. Development of thuliumdoped fibre amplifiers for the 2. Demand on higher bandwidth bring about to use the other rare earth doped fiber such as thuliumdoped fiber amplifiers tdfas.
Devices operating in the region of wavelengths around 2 m receive growing attention nowadays because they can be used for socalled eyesafe applications, e. We report the realization of a thulium doped fiber amplifier designed for optical communications providing high gain 35db and low noise figure fiber optics amplifiers and oscillators. Demand on higher bandwidth bring about to use the other rare earth doped fiber such as thulium doped fiber amplifiers tdfas. Erbium doped fiber amplifiers has been written by early pioneers in the development of fiber amplifier technology and optically amplified systems. Since the probability of nonradiative decay of the lasing transition of thulium in conventional silicabased fibers is high, a fluoridebased fiber host with a lower phonon energy is often used. The model considers the influences of the amplified spontaneous emission ase noise, the wavelength and the power of the seed, the thuliumdoped fiber length and the pumping power into the tdfa. Model for a thuliumdoped silica fiber amplifier pumped at.
We report the first demonstration of a unidirectional, isolatorfree 2. Optimizing the thulium doped fiber amplifier tdfa gain and. Rare earth doped fibers for use in fiber lasers and. A line of thuliumdoped fiberoptic components enable construction of fiber lasers and oscillators operating at 2. We report the realization of a thulium doped fiber amplifier designed for optical communications providing high gain 35db and low noise figure.
Supercontinuum generation and lasing in thulium doped. Manufactured for demanding environmental conditions, the device is robust and reliable. Rp photonics encyclopedia rareearthdoped fibers, erbium. Thulium doped floridebased fiber amplifier listed as tdffa. Model for a thuliumdoped silica fiber amplifier pumped at 1558nm. Thuliumdoped fiber amplifier for optical communications. The 1550nm long pulse single frequency polarization maintaining. A stable dualwavelength thuliumdoped fiber laser operating at 1. Apr 18, 2006 thuliumdoped fiber amplifier tdfa are considered for longhaul transmission systems as they allow amplification in the sband 1.
Thulium doped fiber amplifiers have been used in the sband 14501490 nm and praseodymium doped amplifiers in the 0 nm region. A new range of thuliumdoped fiber optic components from coherent nufern enables construction of fiber lasers and oscillators operating at 2 m with higher output power than was previously possible. In this regard, a tmdoped fiber amplifier was recently shown to have a unique. Due to the low phonon energies of the zblan glass, the levels 3 h 4 and 3 f 2 are metastable not quenched by multiphonon transitions.
A thuliumdoped fiber amplifier tdfa is often used for light amplification in the near infrared nir. The most important relaxation pathway is crossrelaxation to an intermediate state where stimulated emission can occur. Pdf diodepumped wideband thuliumdoped fiber amplifiers for. Thuliumdoped tellurite fiber amplifier request pdf. Three different amplifier lengths are simulated and the gain curve is plotted in the report page. High power qswitched thulium doped fibre laser using carbon. Thuliumdoped silicabased optical fibers for cladding pumped. Doped fiber amplifier and fiber laser file exchange. The system designed amplifies a set of 16 channels in the sband going from 1450 nm to 1525 nm.
To reply the increased requests for the scientific, medical and defense applications, keopsys proposes its high power thulium amplifier. The design allows proposing wide or small wavelength range. Numatch technology matches mechanical and optical characteristics. Fiber lasers quality products, customer part codes, flexible capacity production, consistency and service agility are just some attributes that make ofs the norisk choice for amplifier manufacturers. Thuliumdoped fiber amplifiers tdfas operating around 2 m offer the broadest gain.
This amplifier provides a peak gain of 25 db at 2040 nm with a 15 db gain window spanning the wavelength range 2030 2100 nm with an external noise figure nf of 46 db. Fibercore offers a number of different doped fibers including erbium doped fiber for various c and l amplifier configurations and ase applications. The presented high power broadband and narrowband superfluorescent fiber source could be of great interest and open up the prospect of many new applications such as laser materials processing and metrology. Afs ultrafast fiber lasers are characterized by an outstanding performance combined with flexibility and maximum. Rp photonics encyclopedia fiber amplifiers, edfa, ydfa. However, those regions have not seen any significant commercial use so far and so those amplifiers have not been the subject of as much development as the edfa. Radiation effects on the gain of thulium doped fiber. The photonics crystal fiber was 10 cm in length and effectively acted as a machzehnder interferometry element with a. Thulium fiber amplifiers operating in the 2 m region for applications such as lidar or spectroscopy e. Presently tdfa are fluoride based because of the low phonon energy of this glass.
Afs ultrafast fiber lasers are characterized by an outstanding performance combined with flexibility and maximum stability. A comprehensive numerical model of a thuliumdoped silicabased fibre amplifiers is presented. Apr 11, 2016 high power qswitched thulium doped fibre laser using carbon nanotube polymer composite saturable absorber. Pdf we report the first experimental realization and detailed characterization of thulium doped fiber amplifiers tdfas specifically designed. The pump power and thuliumdoped fiber tdf length for singlepass thuliumdoped fiber amplifiers tdfa are theoretically optimized to achieve the optimum gain and noise figure nf at. The thuliumdoped fibers are promising candidates for optical amplification in the optical telecommunication sband 14601530 nm. The ultimate information characteristics of the amplifier are. Simulation of the ultimate characteristics of thuliumdoped. This paper presents the static behavior of thuliumdoped fiber amplifier tdfa operating around 2. Thulium doped fibre optic components electro optics. Cw thulium fiber amplifier with polarization maintaining. In the present paper, the thulium doped fiber amplifier tdfa has been irradiated by a neutron beam of different doses for various exposure times from an am241be9 neutron source.
Thulium doped fibers are used for operation around 2 microns. Thorlabs thuliumdoped tm fiber lasers are benchtop fabryperot fiber laser sources featuring single mode fiber output in the 2 m band and simple operation for test and measurement applications. Thuliumdoped fiber amplifier, numerical and experimental. In the second example, we will show how to model an approximately continuouswave cw interaction in a thulium doped material. Simulation of dual stage thuliumdoped fiber amplifier using pump. Thulium doped single mode and largemodearea optical fibers applications plastics and polymer cutting, engraving, and welding excitation of biological and waterbased samples industrial and medical lasers lidar systems pumping solid state crystal lasers click to enlarge crossrelaxation occurs in tm doped fiber when.
The model is spectrally and spatially resolved and is general in terms of pumping scheme used. Gain in the sband is demonstrated in a thuliumdoped tellurite fiber amplifier using dual pump and bidirectional pumping schemes. The first implementation of active fiber optic amplifier was demonstrated in 1994 with erbium doped fiber amplifier edfa. For example, rp photonics has sophisticated modeling software for simulating the performance of rareearthdoped fiber lasers and amplifiers. May 26, 2015 the first implementation of active fiber optic amplifier was demonstrated in 1994 with erbium doped fiber amplifier edfa. The book guides the reader from the most fundamental aspects of fiber amplifiers all the way to system design and applications. Thuliumdoped fiber amplifier tdfa are considered for longhaul transmission systems as they allow amplification in the sband 1. Rare earth doped fibers for use in fiber lasers and amplifiers the advances in performance of fiber lasers have been dramatic in the last 10 years, making fiber. Thuliumdoped optical fiber amplification part 22 youtube. Thulium doped fiber amplifier development for power scaling the 2 micron coherent laser absorption instrument for ascends mark w. Thuliumdoped fiber lasers operate in the region of wavelengths around 2 m and can be used as highpower laser sources.
No random backward sbs pulses are observed when using a narrowlinewidth fiber superfluorescent source as the seed. Coractive tm doped fibers are available in singleclad or doubleclad configurations. Thulium fiber amplifier is designed for scientific and sensing applications between 1900 and 2050nm. For optimized tmdoped fibre with 3h4 level lifetime of 45. Thuliumdoped fiber amplifier for optical communications at.
Advances in thulium doping technology provide improved pumping efficiency, yielding power output 1 kw for gain fibers. Thuliumdoped laser and amplifier fibers from nufern. Thuliumdoped silica fibers with enhanced 3h 4 level lifetime. For example, rp photonics has sophisticated modeling software for simulating the performance of rareearth doped fiber lasers and amplifiers definition. Ask rp photonics for any advice concerning the use of rareearth doped fibers e. The software rp fiber power can be used for analyzing and optimizing fiber amplifiers. In this paper we report the design and performance of a multistage highpower pm tmdoped fiber amplifier, cladding pumped at 793 nm. Doped optical fiber amplifiers pt3 archives optiwave. Ctfapb series deliver up to 40 dbm of saturated output power with a weak input range signal. Characterization of a thuliumdoped silicabased optical. Simulation and design of a multistage 10w thuliumdoped. The twostage claddingpumped thuliumdoped allfiber amplifiers were used directly to boost average power to 120 w, the center wavelength and the fwhm were 1963. High power qswitched thulium doped fibre laser using carbon nanotube polymer composite saturable absorber.
Due to the small transition cross sections, the saturation energy is fairly high, e. Abstract we describe the development and testing of a. Thuliumdoped fiber amplifier for optical communications at 2 m. Simphosoft webinar modeling pulsed and cw tmdoped optical. Thuliumdoped fiber optic components cutting tool engineering. We report the first experimental realization and detailed characterization of thulium doped fiber amplifiers tdfas specifically designed for optical communications providing high gain 35 db, noise figure as low as 5 db, and over 100 nm wide bandwidth around 2 m.
Corepumped thulium fibers were prepared inhouse using the modified chemical vapor deposition method. The first implementation of active fiber optic amplifier was demonstrated in 1994 with erbiumdoped fiber amplifier edfa. A stable dualwavelength thuliumdoped fiber laser at 1. Thuliumdoped fiber amplifier development for power scaling the 2 micron. Fibers free fulltext thuliumdoped silica fibers with. A central emission wavelength of 2 m generated by thuliumdoped amplifiers has enabled a multitude of new applications. Twomicron thuliumdoped fiber lasers achieve 10 kw peak power. Pdf thuliumdoped fiber amplifier for optical communications at. The pump power and thulium doped fiber tdf length for singlepass thulium doped fiber amplifiers tdfa are theoretically optimized to achieve the optimum gain and noise figure nf at the center of sband region. We investigate the stimulated brillouin scattering sbs effect in highpower thuliumdoped fiber amplifier seeded with a narrowlinewidth fiber superfluorescent source or a conventional narrowlinewidth fiber laser. Gain in the sband is demonstrated in a thulium doped tellurite fiber amplifier using dual pump and bidirectional pumping schemes. An efficient fluoridebased thuliumdoped fiber amplifier tdfa is theoretically demonstrated using a doublepass scheme. Thuliumdoped fiber amplifier, numerical and experimental approach lasers and electrooptics research and technology s. The amplified spontaneous emission source in a backward direction with respect to the pump and in a singleended configuration produces.
All supported by our gainmaster simulation software to help you design even the most complex edfas. Stimulated brillouin scattering suppression of thuliumdoped. Each fiber laser is constructed using a thuliumdoped fiber as the gain medium and two fiber bragg gratings to select the laser wavelength. Fiber lasers tmdf200 40910 a thulium doped fiber with an absorption of 200 dbm at 790 nm. Coractive thulium doped fibers are specifically designed for either pulsed or cw applications. Doped optical fiber amplifiers pt3 reflective amplifier in reflective edfas, a device e.
The application of the model for predicting the sband amplifier performance and for optimization of amplifier parameters is shown. We report on a flat and broadband thulium doped amplified spontaneous emission ase fiber source working around 1. Thuliumdoped fiber amplifier for optical communications at 2. The software takes in account the amplified spontaneous emission. The software takes in account the amplified spontaneous. We investigate the operation of holmiumdoped fibre amplifiers hdfas in the 2. Thuliumdoped silicabased optical fibers for claddingpumped. Thulium fiber amplifier with prebooster stage keopsys.