Inaoe, 11042012 2 outline short historical background on supercontinuum. Applications involving optical fibers have grown considerably in recent years. Supercontinuum generation in optical fibers request pdf. Supercontinuum generation in microstructured fibers and.
With contributions from major figures and groups who have pioneered research in this field, the book describes the historical development of the subject, provides a background to the associated nonlinear optical processes, treats the generation mechanisms from continuous wave to femtosecond pulse pump regimes and highlights the diverse applications. When femtosecond pulses are used, the spectral broadening can be dominantly caused by selfphase modulation. Supercontinuum generation scg has attracted much attention due to its variety of applications in different fields such as optical communication based on dense wavelength division multiplexing, fluorescence microscopy for the effect of treatment by electrostatic field, designing tunable ultrafast nanosecond and femtosecond laser sources. On the right, the spectrum of the supercontinuum is shown after the output beam passed through a prism. Experiments and simulations carried out at 1550 nm indicate that the modal composition of the input beam can substantially alter the soliton fission process. Therefore, optical fiber is widely used as a nonlinear medium for sc generation, especially specialty optical fibers, such as photonic crystal fiber pcf, soft glass fiber as well as germania doped fiber. Some special solutions, which are less widely used, are briefly mentioned in the following. We demonstrate that the pumps spatial input profile can provide additional degrees of freedom in tailoring at will the nonlinear dynamics and the ensuing spectral content of supercontinuum generation in highly multimoded optical fibers. A special optical fiber, around 10% of the width of a human hair, could be used to. Soliton optical fibers supercontinuum generation near the zero dispersion elham jasim mohammad 1, gaillan h. In an optical fiber, both the wavelength dependence of the material itself glass. Midinfrared supercontinuum generation in a suspendedcore. It is well known that dispersive properties of the pcf play a governing role in producing the dw and controlling the sc generation. Supercontinuum generation for optical coherence tomography.
Supercontinuum generation in photonic crystal fibers for. The newport supercontinuum kit leverages the powerful combination of newports scg800 supercontinuum fiber module and high stability ultralign manual positioners. The layered spiral microstructured optical fiber lsmof design allows higher nonlinearities than the most common microstructured optical fibers. We report on the experimental demonstration of a whitelight supercontinuum generation in normally dispersive singlemode airsilica microstructured fiber. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. Feb 17, 2014 a joint research project between heriotwatt university and the university of bath is investigating novel fibre optics for high power applications. Supercontinuum generation and pulse compression in short fibers for optical pulses generated by 1. Supercontinuum generation from in tense partially coherent laser beams in optical fibers p. Supercontinuum generation in bulk media, and in more conventional optical fibers, has been successfully described by the generalized nonlinear schrodinger equation. Supercontinuum generation by photonic crystal fibers roland michaely. Broadband supercontinuum generation using a hollow optical. A supercontinuum source bridges this gap, providing an ultrabroadband whitelight spectrum but with singlemode beam characteristics and excellent pointing stability and the brightness of a laser. Fundamental noise limitations to supercontinuum generation. Cambridge core electronic, optoelectronic devices, and nanotechnology supercontinuum generation in optical fibers edited by j.
Supercontinuum sc generation towards the midinfrared mir range is an active field of research and development motivated by a wide range of applications including optical coherence tomography oct, material processing, optical sensing and absorption spectroscopy. Second, we proposed and demonstrated a new and efficient approach to generation of a cw sc in optical fibers pumped by a cw ase light. First, we demonstrated sc generation with a 10db spectral bandwidth of 430nm in a fiber ring laser with conventional nonlinear fiber. Optical solitons and supercontinuum generation in a tellurite. Scgbookcode supercontinuum generation in optical fibers updated and additional source code. Supercontinuum generation in wavelength nm photonics. Abdullah 2 1 physics department, collage of sciencesalmustansiriyah university, iraq, 2 physics directorate, technology materials chemistryministry of. Formation and applications of nanoparticles in silica optical fibers.
Supercontinuum generation in scg800 photonic crystal fiber. Pumping a short section of this fiber with compressed pulses from a compact amplified fiber laser generates a 200 nm bandwidth continuum with typical selfphasemodulation characteristics. Supercontinuum generation and pulse compression in short. Supercontinuum generation in optical fibers dudley j. Coupling efficiency we define coupling efficiency as the ratio of the power measured after the collimating objective and the laser power measured before the focusing objective. The effect lets scientists produce light at colors tailored to particular applications in sectors like bioimaging, optical communications and fundamental studies of. Versatile supercontinuum generation in parabolic multimode. The physical processes behind supercontinuum generation in fibers can be very different, depending particularly on the chromatic dispersion and length of the fiber or other nonlinear medium, the pulse duration, the initial peak power and the pump wavelength. Supercontinuum generation in microstructured silica optical fibers. Frequently, one uses photonic crystal fibers, which can be made with tailored chromatic dispersion properties and often also exhibit increased nonlinearity due to strong mode confinement. We demonstrate broadband supercontinuum generation over two infrared octaves, spanning from 1.
Supercontinuum generation in microstructure fibers. Supercontinuum generation in photonics crystal fibers. The mechanism of graduate acceleration of trailing soliton by dispersive waves radiated from the preceding one provides necessary conditions for soliton fusion at the advanced stage of. Glass and process development for the next generation of optical. Supercontinuum generation is the formation of broad continuous spectra by propagation of high power pulses through nonlinear media, and was first observed in 1970 by alfano and shapiro 1,2. The most downloaded articles from optical fiber technology in the last 90 days.
Supercontinuum generation in microstructured fibers and novel. Supercontinuum generation in photonic crystal fibers for undergraduate laboratory gregory alan helmininack, derek d gladysiewski, feng zhou, and ken hershman department of physics, indiana university of pennsylvania 167 northpointe blvd, freeport, pa 16201 usa ben campbell and jeff thomas electrooptics center, penn state university. Both doublecrossover nano dna structure and copperionmodified structure provided a sufficiently high optical nonlinearity within a short length of hollow optical fiber. Modulation control and spectral shaping of optical fiber. Optical fiber wave guiding to understand transmission mechanisms of optical fibers with dimensions approximating to those of a human hair. Dudley in chapter 3 of the book supercontinuum generation in optical fibers edited by j. Effective index as a function of the optical wavelength for five main spatial lp modes. Supercontinuum generation for ultrahighresolution optical coherence tomography at wavelength of 0. Next generation of optical fibers 22nd january 2018 by pveditors leave a comment the university of southamptons optoelectronics research centre orc is to lead a. Photonic crystal fibers pcfs are suitable for supercontinuum generation because of their capability of strong modal confinement and tailorable dispersion properties to maximize bandwidth of generated optical spectrum. Mid infrared supercontinuum generation in photonic crystal. Selenoptics proposes several standard infrared fibers with light propagation in the 1.
Supercontinuum generation in a nonlinear optical fiber domagoj kovacid 1, matej peranid, neven santid 1, silvije vdovid 1, damir aumiler 1, ticijana ban 1 1 institute of physics, physics, bijenicka cesta 46, 0 zagreb, croatia. Supercontinuum generation using microstructured optical fibers. Like the optical fibers that are the mainstay of the telecommunications industry, theyre made of glass. Supercontinuum sc generation describes the phenomenon that the output spectrum becomes much wider than the input spectrum when an ultrashort optical pulse passes through a nonlinear medium, such as bulk fused silica, photonic crystal fiber and so on. May 01, 2001 the next generation of optical fibers. Sapphire laser such as the tsunami or mai tai ultrafast oscillators. Supercontinuum generation from a photonic crystal optical fiber seen as a glowing thread on the left for gradually increasing intensity of a pump laser. The figure below shows the broad emission spectrum that can be achieved. Osa versatile supercontinuum generation in parabolic. Since microstructured optical fibers mof first enabled visible supercontinuum generation using seed pulses directly from a ti. Fiber acts as an open optical waveguide may be analyzed using simple ray theory geometric optics. Supercontinuum generation in nanostructured core gradient.
An all fiber supercontinuum laser source with a piece of highly nonlinear fiber inserted into a modelocked fiber laser is experimentally demonstrated. Stentz, visible continuum generation in airsilica microstructure optical fibers with anomalous dispersion at 800 nm. In recent years, midinfrared mir supercontinuum sc light sources have attracted considerable attention for potential applications, including optical ir coherence tomography oct, metrology, and spectroscopy. Supercontinuum generation in a microstructured optical. Despite undeniable successes, it is necessary to develop new generations of amplifying optical fibers that will overcome some limitations typical of silica glass. We demonstrate that the simultaneous excitation of the microstuctured fiber in its normal and anomalous dispersion regimes using the fundamental and second harmonic signals of a passively qswitched microchip laser leads to a homogeneous. The higher the pump intensity, the broader the supercontinuum. The scg800 supercontinuum fiber module is a polarizationmaintaining supercontinuum device for use with 800nm range femtosecond lasers. Since its introduction nearly 2 decades ago, optical fiber based supercontinuum has become the light source of first choice in research as well as for industrial applications in optical coherent tomography fujimoto 2003, frequency combs generation for high precision metrology jones et al. Based on highly nonlinear softglass materials, the student will design and optimize pcf with zero dispersion for. This page contains the original and in the future some updated matlab source code for simulating pulse propagation and supercontinuum generation in optical fiber as described by j.
Soliton fusion is a fascinating and delicate phenomenon that manifests itself in optical fibers in case of interaction between copropagating solitons with small temporal and wavelengths separation. Supercontinuum generation in chalcogenide layered spiral. Effective soliton fusion process at the advanced stage of. Ben salem a, cherif r, zghal m 2012 highly nonlinear tapered photonic crystal fibers for broadband midinfrared supercontinuum generation in the few optical cycle regime. Supercontinuum generation in nonlinear optical fibers.
Pdf coherent supercontinuum generation in photonic. Until now, there were two ways to create a supercontinuum. Taylor imperial college of science, technology and medicine, london. Supercontinuum generation in optical fibers edited by j. Overview the newport supercontinuum kit is a complete solution from newport and spectraphysics designed specifically for the generation of supercontinuum with a femtosecond ti. Necessary to consider the optical waveguiding of a cylindrical glass fiber. Here, we have chosen a highly nonlinear glass for its composition, the arsenic trisulfide, and we have determined its dispersion and nonlinear characteristics.
As a pump source, we use femtosecond midir pulses from a homebuilt postamplified optical. This laser achieves modelocking based on the mamyshev mechanism and realizes supercontinuum generation spanning from 30 nm to 2030 nm directly. Supercontinuum generation in a nonlinear optical fiber. Fiber characterization postprocessing report generation. Supercontinuum generation in optical fibers updated. We demonstrate supercontinuum generation in a photonic crystal fiber with allnormal group velocity dispersion. Results from numerical simulations are used to discuss. A unique design of a pure silica hybrid photonic crystal fiber consisting of three circular rings and one octagonal ring lattices of air holes bounding silica core has been simulated for the generation of wide super continuum spectrum extending from ultraviolet to near infrared. Generation in softglass fibers christian skovmoller agger. Chalcogenide fiber is promising for mir sc generation because of its wide transmission window and high nonlinearity.
Supercontinuum generation in microstructured fibers and novel optical measurement techniques goery genty dissertation for the degree of doctor of science in technology to be presented with due permission of the department of electrical engineering, helsinki university of technology, for public examination and debate. Highpower supercontinuum generation using highrepetition. Although many previous reports on sc generation have used pcfs pumped with near infrared or visible lasers. The upcoming fifth generation 5g wireless network brings to optical networking.
Supercontinuum generation in a microstructured optical fiber by picosecond self q. Far from being confined to this single use, optical fibers are deployed in many fields of applications, such as lasers for marking, machining, cutting, laser remote sensing lidar. Introduction to nonlinear effects involving in the process of supercontinuum generation. Pdf midir supercontinuum generation from nonsilica. The optical fiber based supercontinuum source has recently become a significant scientific and commercial success, with applications ranging from frequency comb production to advanced medical imaging. Supercontinuum generation from in tense partially coherent. In many cases, optical fibers are used for supercontinuum generation. Supercontinuum generation in optical fibers updated source code. His research has spanned both experimental and theoretical nonlinear optics and photonics.
Kesting, simulation of pulse propagation in nonlinear optical fibers, wias report no. Although supercontinuum generation can be observed in a drop of water given enough pumping power, photonic crystal fibers are ideal media for supercontinuum generation as the dispersion can be designed to facilitate continuum generation in. Supercontinuum generation by photonic crystal fibers. Apr 01, 2010 the optical fiber based supercontinuum source has recently become a significant scientific and commercial success, with applications ranging from frequency comb production to advanced medical imaging. Modelocking based on the mamyshev mechanism can be obtained easily, and the influence. Formation and applications of nanoparticles in silica optical. Sapphire laser at 800 nm wavelength e hollow core pcf. Finally, future opportunities of the new generation of fibers are summarized in section 6. This paper provides an overview of the peculiar dispersive and nonlinear properties exhibited by these fibers, including the supercontinuum generation by femtosecond pumping. Supercontinuum generation by intermodal fourwave mixing.
Fundamental noise limitations to supercontinuum generation in. This repository contains the matlab source code for simulating pulse propagation and supercontinuum generation in optical fiber as described by j. Supercontinuum generation in integrated photonics platforms. Nonsilica microstructured optical fibers for midir. Investigation of telluriumbased chalcogenide doubleclad. Ultrahighresolution optical coherence tomography in 1. Kawaguchi 2004 supercontinuum generation and pulse compression in short fibers for optical pulses generated by 1. Supercontinuum generation with picosecond ultraviolet pulses. We also define coupled power as the power of the supercontinuum measured after the collimating. Osa intracavity supercontinuum generation in a mode.
Most downloaded optical fiber technology articles elsevier. Fiberoptic communication is a method of transmitting information from one place to another by. These chipscale platforms promise to miniaturize supercontinuum. Supercontinuum generation in transparent bulk media results from femtosecond filamentation, which involves a complex interplay among linear diffraction and gvd and nonlinear effects self. The second generation of fiberoptic communication was developed for commercial use.
We experimentally demonstrated supercontinuum generation through a hollow core photonic bandgap fiber hcpbgf filled with dna nanocrystals modified by copper ions in a solution. Supercontinuum generation in optical fibers updated and additional source code. Several types of microstructured optical fibers with optimized designs, have been developed during the recent years in order to enhance the supercontinuum generation. We report a simple method of generating flattop high power 5w supercontinuum from an allsilica fiber tmmopa laser emitting in the interesting for applications 1. Pdf whitelight supercontinuum generation in normally. Infrared supercontinuum generation in softglass fibers.
Supercontinuum generation is when intense laser light of one color travels within a material, like glass, and broadens into a spectrum of colors. Numerical simulation results are shown using the properties of nonsilica microstructured fibers for. The study of supercontinuum sc generation in photonic crystal fibers pcf continues to be an area of active research, motivated by many applications in biophotonics, optical metrology, spectroscopy, and imaging. Rp photonics encyclopedia supercontinuum generation. Install the collimating objective 20x, after the scg800 and adjust it to collimate the output beam. While optical fibers have been the workhorse of supercontinuum generation since its inception, integrated waveguide based sources of supercontinuum have become an active area of research in the twenty first century. Hybrid photonic crystal fiber with elliptical micro air. Special issue on next generation access networks view all. The term supercontinuum does not cover a specific phenomenon but. Evolution of fiberoptic transmission and networking toward the 5g. Supercontinuum generation with photonic crystal fibers and. Innovations in optical fiber technology are revolutionizing world. Photonic crystal fibers pcf that is also called as holey fiber, holeassisted fiber, or microstructured fiber are the medium of choice for sc generation in optical fibers because of the design.