The doubleclad fiber exhibits singlemode propagation for the laser output, while the pump radiation propagates in the multimode pump cladding. Unlike lasers based on ytterbium doped bulk material, this fiber arrangement enables very flexible operation, from single pulses up to 50 mhz. Claddingpumped ytterbiumdoped fiber laser description of the model. We concluded that the temperature dependence of the yb doped fiber amplifier is mainly determined by the saturation level poutppump, when poutppump0. Introduction erbiumdoped fiber amplifiers are the by far most important fiber amplifiers in the context of. The ytterbiumdoped fiber amplifier offers a number of attractive features, including a broadgain bandwidth and a high efficiency, due in large part to its freedom from various competing. Optical powers and excitation density along the fiber of an ytterbium doped fiber amplifier, pumped at 940 nm. Contribute to jomiripyfiberamp development by creating an account on github. Step index plastic optical fiber fiber optics 1074. An integrated ytterbium raman fiber amplifier architecture is proposed for power scaling of a raman fiber laser. You also get erbium doped mm fiber, ytterbium doped mm fiber, measuredindex multimode fiber and parabolicindex multimode fiber amplifier, and other fiber models. It may for example simulate the operation of fiber amplifiers and lasers. Allfiber, high power singlefrequency linearly polarized ytterbiumdoped fiber amplifier chi liu, yunfeng qi, yaqian ding, jun zhou, jingxing dong, yunrong wei, and qihong lou author information. One of the more promising candidates is an airclad ytterbiumdoped solidcore photonicbandgap pbg fiber amplifier, for which as much as 30 w of output power and a slope efficiency of 58% have been achieved at a 1178 nm wavelength.
Optisystem allows you to plan, test, and simulate optical links in the transmission layer of modern optical networks. The objective of this lesson is to demonstrate the amplification of a sequence of gaussian pulses by an ytterbiumdoped fiber amplifier using the dynamic model. Erbium yterbium doped fiber amplifier 1u eydfa cdata eydfa series are mainly used in am catv, digital catv, fttx pon,which is a high power multiport output optical fiber amplifier. Rp photonics encyclopedia fiber amplifiers, edfa, ydfa. The system used in the simulation is shown in figure 1. A ytterbium doped fiber with an absorption of 350 dbm at 977 nm. Ytterbiumdoped fiber amplifiers, in ieee journal of quantum. The choice of the active and passive components is the key to highperformance ytterbium fiber amplifiers.
Fiberbased lasers and amplifiers utilizing erbiumytterbium codoped fibers have experienced a great progress over the past 15 years. Here, the oscillator is followed by a pulse picker to select the repetition rate of the pulses to be amplified in the sequential singlestage, claddingpumped fiber amplifier. Techwin china offer you various type of fiber amplifiers like 1. Photodarkening measurements in largemodearea fibers. Edfa1550h high power ytterbium edfa fiber optic telecom. Recently, ytterbium yb doped crystals, and particularly fibers, have been used in a growing range of femtosecond amplifiers with quite different that is, complementary performance characteristics in terms of. Us83633b2 ytterbiumdoped optical fiber, fiber laser, and. All supported by our gainmaster simulation software to help you design even the most complex edfas. Double clad ytterbium fibers made with photonic crystal fiber technology are known as airclad fibers and provide a range of new benefits. Ytterbium fiber amplifiers set the mark for speed and power.
Erbium yterbium doped fiber amplifier 1u eydfa cdata. The edfa amplification region varies from application to application and can be. Thanks to their eyesafety, they outperform the most popular solid state nd. High power ytterbiumdoped fiber lasers fundamentals and applications article pdf available in international journal of modern physics b 2812 april 2014 with 5,592 reads how we measure. The ytterbium doped fiber amplifiers ydfa series utilize ytterbium yb doped fiber technologies to achieve optical amplification in 1064 nmwavelength range. The optical amplifier is based on a dual stage configuration and performance is. In terms of gain saturation, fiber amplifiers are very different from semiconductor optical amplifiers soas. The ytterbium doped fiber amplifiers ydfa series utilize ytterbium ybdoped fiber technologies to achieve optical amplification in 1064 nmwavelength range. These amplifiers operate in demanding thermal, vibration, and radiation environments.
Yag or ybdoped fiber sources in scientific, military or medical applications. The scienti c interest in ber lasers stems from the rich nonlinear. Multistages or booster ytterbium doped fiber amplifier, keopsys ensure long life duration and high reliability of the devices, from the laboratory to onboard applications. Us8941912b2 ytterbiumdoped optical fiber, fiber laser and. Details on the amplification mechanisms involved are provided in the amplifier comparison section at the bottom of this tab. Optimisation of cascaded yb fiber amplifier chains using. High power ytterbium erbium doped fiber amplifier introduction fot edfa1550h is high power and low distortion edfa, which adopts jds, lumics and other worldrenowned semiconductor companies as the pumping source. Our proprietary design ensures high gain and excellent power stability. Ytterbiumdoped fiberseeded thindisk master oscillator. We numerically simulate a fiber laser with the following properties. Unlike other cladding pump or dualclad fibers, fibercores dualclad erbiumytterbium doped fiber fcp1500y was originally designed as a highpower communications amplifier fiber. We used a commercially available polarization maintaining fiber with a 30 micron core and 250 micron first silica cladding as our reference fiber. Fiber lasers tmdf200 40910 a thulium doped fiber with an absorption of 200 dbm at 790 nm.
We show that it is possible to adapt existing software packages developed originally for modeling telecommunication devices and systems to reliably predict and optimize the performance of highpower ytterbiumdoped fiber amplifier and laser systems. The pump light is guided within an allsilica structure, using a fluorinated secondary cladding to create the pump guide boundary, without the need for low index. Osa temperature dependence of ytterbiumdoped fiber. The pump current of the ytterbium doped fiber amplifier is adjustable through the instruments front panel, allowing the user to vary the gain and output power of the amplifier. The ytterbium doped fiber amplifier offers a number of attractive features, including a broadgain bandwidth and a high efficiency, due in large part to its freedom from various competing. The extremely high numerical aperture na for the pump coreinner cladding is possible, allowing efficient pumping with inexpensivehigh power broad area emitting pumps. Fiber simulation software is software for numerical simulations on fiber devices. Packaged in an aerogain gain module, the high performance of our fibers is easily accessible for building picosecond or femtosecond ultrafast fiber lasers. Ytterbiumdoped fiberseeded thindisk master oscillator power amplifier laser system by christina c. The pm ytterbiumdoped fiber amplifier is a high smallsignal gain polarization maintaining single polarization pmsp amplifier for the wavelength band 1055 nm 1075 nm, provided as a compact oem module. The all fiber based product are extremely reliable andrequires no routine maintenance. The bluest wavelength light gets amplified in the yb fiber and the power is transferred to redder wavelengths in the following raman fiber.
Ytterbiumdoped fibers are widely used in applications requiring short fiber amplifiers for high peak power pulse amplification. Us8941912b2 ytterbiumdoped optical fiber, fiber laser. 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. Fibercore offers a number of different doped fibers including erbium doped fiber for various c and l amplifier configurations and ase applications. Unlike lasers based on ytterbiumdoped bulk material, this fiber arrangement enables very flexible operation, from single pulses up to 50 mhz. Hy21am32pxx series 1550nm ytterbiumdoped fiber amplifier is equipped with stable optical output power circuit and pump laser thermoelectric cooling device temperature stability control circuit to ensure the best performance of the equipment and longlife laser stability.
It features universal dsp, decision, qam sequence generator and qam sequence decoder components. It is an ytterbium yb fiber amplifier seeded with a double or multiple wavelength laser and followed by a passive raman fiber. Numerical simulations have been used to model highrepetition rate ultrafast ytterbiumdoped fiber amplifier systems assuming continuouswave input signals under variable situations, such. The allfiberbased product are extremely reliable andrequires no routine maintenance. It is a singleclad fiber for corepumped applications. The most common example is the erbium doped fiber amplifier edfa, where the core of a silica fiber is doped with trivalent erbium ions and can be efficiently pumped with a laser at or near a wavelength of 980 nm or 1480 nm, and exhibits gain in the 1550 nm region. Ytterbiumdoped silica fibers in general have a very broad fluorescence spectrum extending up to 1200 nm. To analyze the dynamic characteristics of the highpower ytterbiumdoped doubleclad fiber amplifier considering pulses in repetition rates of khz, a dynamic ytterbiumdoped fiber model is necessary. The optical amplifier is based on a dual stage configuration and performance is optimized for 1064 nm. The gain performance of ytterbium doped fiber amplifier. Amonics\ specialty products, lband erbiumdoped fiber amplifiersedfa, are made with high power pump laser and high stability pump combiners, robust in high power boosting. Edfa erbium doped fiber amplifier tutorial exfiber optical technologies co. Numerical simulations have been used to model highrepetition rate ultrafast ytterbium doped fiber amplifier systems assuming continuouswave input signals under variable situations, such as onesided and twosided pumping.
The above figure shows the best results to date for a series of ytterbium doped double cladding optical fibers. This fiber is ideal for use as a preamplifier in a fiber amplifier chain with double cladding fiber acting as a power amplifier. Pulse energies achieved for a series of ytterbium doped double cladding fibers. Due to the small transition cross sections, the saturation energy is fairly high, e. Erbiumytterbium codoped fiber amplifier operating at 1550. We concluded that the temperature dependence of the ybdoped fiber amplifier is mainly determined by the saturation level poutppump, when poutppump0. Fiber amplifiers are optical amplifiers based on optical fibers as gain media. The objective of this lesson is to demonstrate the performance of ytterbiumdoped fiber amplifiers. Acknowledgments this thesis work has been carried out in the fiber optics research group of the.
Oct 21, 2016 ytterbium doped optical amplifiers have become common tools for industrial applications due to their high efficiency, relatively low cost and potentially very high output power level. These high power edfa instruments are 1550nm range cband erbium 1w doped and erbiumytterbium 10w doped fiber amplifiers which offer up to 10 watts of output power. An ytterbium doped optical fiber of the present invention includes. A fiber amplifier model was established to determine temperaturedependent performance of yb doped fiber amplifiers. The ytterbium concentration in the core in terms of ytterbium oxide is 0. A cladding pumped jacketedairclad ytterbiumdoped fiber amplifier operating at 977 nm produced 4. The result are edfas that possess high output power, high gain with very low noise, and are ideal for high power edfa applications. Its spectral bandwidth is in 1540 1563nm,whichis mainly designed for catv or 1 8 itu wavelength. Erbiumytterbium codoped fiber amplifier operating at. Design and development of erbium doped fiber amplifiers. Erbium yterbium doped fiber amplifier 2u eydfa cdata. Compared to booster optical amplifiers boas and semiconductor optical amplifiers soas, erbium doped fiber amplifiers edfas can amplify femtosecond pulses to significantly higher peak power levels.
The ytterbiumdoped fiber amplifier offers a number of attractive features, including a broadgain bandwidth and a high efficiency, due in large part to its freedom from various competing processes seen in other rareearth dopants. In the interior of the machine is equipped with the output optical power stability circuit and. Ytterbium fiber amplifiers set the mark for speed and. Fiber amplifier,erbiumdoped fiber amplifier,ytterbium. Ytterbium fiber amplifiers ydfa are widely used for optical amplification in 1. High power 1550nm edfa, erbium doped fiber amplifier. The basic configuration of ytterbium doped fiber amplifier is shown in fig. With over 30 years experience of the specialty optical fiber industry, fibercore ltd, the world leader in its field, is exclusively dedicated to the design, manufacture and commercialization of specialty fibers. Pdf high power ytterbiumdoped fiber lasers fundamentals. The optilab eydfa36m erbium ytterbium doped fiber amplifier eydfa module is a highpower, versatile amplifier designed for catvpon networks, optical communication and other generalpurpose optical amplification applications. Sm erbiumytterbium doped fiber newport corporation.
One of the key challenges posed on the performance and reliability. Liekki yb12004125 is a highly doped ytterbium fiber for low noise, low nonlinearity preamplifiers and lasers. Single mode fiber rare earth doped polarization maintaining fiber photonic crystal fiber multimode fiber. Rp photonics encyclopedia fiber simulation software. They are simple to operate, affordable benchtop instruments for laboratory research or manufacturing test applications. First of all, the gain spectra are analyzed for the pump wavelength at 910 nm and with different input pump powers. Ytterbiumdoped optical amplifiers have become common tools for industrial applications due to their high efficiency, relatively low cost and potentially very high output power level. Introduction ytterbium ybdoped fiber lasers and amplifiers have become an attractive option for generating light in the 1.
Temperature dependence of ytterbiumdoped fiber amplifiers. The pump current of the ytterbiumdoped fiber amplifier is adjustable through the instruments front panel, allowing the user to vary the gain and output power of the amplifier. Allfiber, high power singlefrequency linearly polarized. Optimisation of cascaded yb fiber amplifier chains using numericalmodelling. Claddingpumped ytterbium doped fiber laser description of the model. Fiber amplifier,erbiumdoped fiber amplifier,ytterbium doped. The simulation has been done with the software rp fiber power. Ytterbium doped all fiber integrated high power laser systems and their applications saniye sinem yilmaz m.
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