Photonic band cap guidance in optical fibers, science 282 5393. Cambridge core electronic, optoelectronic devices, and nanotechnology supercontinuum generation in optical fibers edited by j. Extended blue supercontinuum generation in cascaded holey. Supercontinuum generation in tellurite optical fibers. Ultraflat supercontinuum generation in cascaded photonic. However, the phenomenon occurring in optical fibers allows wide and costeffective access to the supercontinuum, resulting in a pulsed laserlike source spanning a broad bandwidth.
Campbell and jeff thomas supercontinuum generation in photonic crystal fibers. 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. Supercontinuum generation in nonlinear optical fibers. Mar 31, 2017 this chapter presents a state of the art of infrared supercontinuum generation in heavy oxide tellurite optical fibers from the experimental results published by the international community. The newport supercontinuum kit leverages the powerful combination of newports scg800 supercontinuum fiber module and high stability ultralign manual positioners. While optical fibers have been the workhorse of supercontinuum generation since its. Allnormal dispersion photonic crystal fiber for coherent. In the normal dispersion regime, soliton dynamics are suppressed and the sc generation process is mainly due to selfphase modulation and optical wave breaking. Photonic crystal fibers pcf are useful for supercontinuum generation due to the ability to engineer their dispersion and nonlinear properties 1. Highspectralflatness midinfrared supercontinuum generated.
The newport supercontinuum kit is a complete solution from newport and spectraphysics designed specifically for the generation of supercontinuum with a femtosecond ti. Dudley in chapter 3 of the book supercontinuum generation in. Supercontinuum generation in scg800 photonic crystal fiber. Frequencytunable supercontinuum generation in photoniccrystal. Supercontinuum generation is the formation of broad continuous spectra by propagation of high power pulses. Efficient generation of cw supercontinuum in optical fiber. 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. The difference of sc generation is investigated by fabricating the tellurite mof and tapered tellurite mof at the same pumping condition. The dispersion characteristics of arsenic trisulfide as 2 s 3 chalcogenide glass were analyzed and a kind of as 2 s 3 microstructured optical fiber was designed to shift the zero dispersion wavelength from longer than 4. Modulation control and spectral shaping of optical fiber supercontinuum generation in the picosecond regime.
Broadband optical supercontinuum generation in a long. Generally speaking, the output spectrum depends upon the peak power, pulse width, and the center wavelength of the pump. In optics, a supercontinuum is formed when a collection of nonlinear processes act together. Inaoe, 11042012 2 outline short historical background on supercontinuum. A plate is placed on the coiled fiber and a force is applied to compresses the coiled fiber and thereby increase the interactions between the compressed windings and induce modal mixing and birefringence in the fiber.
Osa supercontinuum generation in liquidfilled photonic. Demonstrations of supercontinuum in microstructured tellurite fibers, allsolid leadsilicate sf57 fibers and in bismuth fibers and tapers are then reported to show what has been achieved experimentally using a range of materials and fiber geometries. Supercontinuum generation in optical fibers request pdf. Sapphire plate for white light continuum generation. Osa supercontinuum generation with optical vortices.
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. We report on a new and simple approach for continuous wave supercontinuum generation in optical fibers. Supercontinuum is one of the most spectacular outcome of nonlinear optics. The higher the pump intensity, the broader the supercontinuum. Design of allnormal dispersion microstructured optical. Optical system photonic crystal fiber supercontinuum generation photonic crystal fiber pcf provides a unique platform for realizing the desired dispersion, birefringence, confinement, and mode multiplicity characteristics for myriad of applications. Supercontinuum generation by photonic crystal fibers. Floresrosas, initial development of supercontinuum. 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. Frequencytunable supercontinuum generation in photonic. Blue extension of optical fibre supercontinuum generation. Supercontinuum generation from a photonic crystal optical fiber seen as a glowing thread on the left for gradually increasing intensity of a pump laser. Ludvigsen fiberoptics group, department of electrical and communications engineering, helsinki university of technology.
We theoretically investigate the nonlinear propagation of femtosecond pulses in liquidcore photonic crystal fibers filled with cs2. A bandwidth of 268 nm at 15 db level with an average spectral density of 2. Optical fiber technology fiber supercontinuum sources. The optical fiber based supercontinuum source has recently become a significant scientific and commercial success. The layered spiral microstructured optical fiber lsmof design allows higher nonlinearities than the most common microstructured optical fibers. A broadband spectral power generator in a multimode optical fiber utilizes a standard multimode fiber that is coiled. Optical microscope picture of a singlemode fiber with zero. Rp photonics encyclopedia supercontinuum generation. Us9176278b2 generating broadband spectral power in. Thus, many biophotonics applications were greatly enhanced by the use of fiber supercontinuum generation in the past decade table 1. We demonstrate supercontinuum sc generation in tapered tellurite microstructure optical fiber mof.
Chalcogenide fiber is promising for mir sc generation because of its wide transmission window and high nonlinearity. When femtosecond pulses are used, the spectral broadening can be dominantly caused by selfphase modulation. Limits of coherent supercontinuum generation in normal. In this letter, a new method for achieving ultraflat supercontinuum generation is proposed. Wavelength conversion and supercontinuum generation in silicon optical fibers.
Resonanceenhanced multioctave supercontinuum generation. Satellites chock full of optical components beam our cell phone signals to every corner of the globe. Rediff mypage refind renren sina weibo sitejot skype slashdot sms stocktwits svejo symbaloo bookmarks threema. Versatile supercontinuum generation in parabolic multimode. Superflat supercontinuum generation from a tmdoped fiber. Supercontinuum generation in optical fibers updated and additional source code. By focusing hard enough a powerful laser beam in front of a sapphire plate, self. The accessories allow access to either particular spectral ranges or specific wavelengths within the ultrabroad superk spectrum.
Supercontinuum generation in photonic crystal fibres with. Recently, the generation of coherent, octavespanning, and recompressible supercontinuum sc light has been demonstrated in optical fibers with allnormal group velocity dispersion gvd behavior by femtosecond pumping. Supercontinuum generation in pcfs has subsequently been widely applied in interdisciplinary. Supercontinuum generation in optical fibers updated source code.
Introduction to nonlinear effects involving in the process of supercontinuum generation. We demonstrate that the continuum generation process is initiated by the filamentation of the vortex, resulting in a spatially divergent continuum. Supercontinuum generation in microstructured fibers and. The education and training in optics and photonics conference. Lomonosov moscow state university, 119899 moscow, russia.
We use a dealiased pseudospectral method with integration performed by an eighthorder rungekutta integration scheme using adaptive stepsize control 1, 2 which is more precise than the widelyused splitstep method. Supercontinuum generation in photonics crystal fibers. We emphasize the advantage of liquid infiltration in enhancing the fiber nonlinearity. Price,2 and thomas feurer1 1institute of applied physics, university of bern, sidlerstrasse 5, 3012 bern, switzerland 2optoelectronics research centre, university of southampton, southampton, so17 1bj, uk corresponding author. The supercontinuum generation results generally from the synergy between several fundamental nonlinear. 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 a specific region. In addition, the compression causes additional nonlinear. Here, we have chosen a highly nonlinear glass for its composition, the arsenic trisulfide, and we have determined its dispersion and nonlinear characteristics. Supercontinuum generation with fixedwavelength lasers. Broadband flattened supercontinuum generation has been a target for researches for years due to its usefulness in many applications in different fields, such as optical coherence tomography oct in the biomedical field, optical sensing and optical communications systems to achieve high transmission capacity. Oct 16, 2017 this paper describes the stateoftheart in wavelength conversion and supercontinuum generation using glassclad silicon core optical fibers. The optical fiber based supercontinuum source has recently become a significant scientific and commercial success, with applications ranging from frequency comb production to. Despite the strong selffocusing and the formation of multiple hotspots along the vortex ring, the singularity is preserved in both the near.
Highspectralflatness midinfrared supercontinuum generated from a tmdoped fiber amplifier jihong geng, qing wang, and shibin jiang advalue photonics, 3708 e columbia street, suite 100, tucson, arizona 85714, usa. The length of tapered region is 3cm and the core diameter is from 7. Onchip twooctave supercontinuum generation by enhancing selfsteepening of optical pulses. Supercontinuum generation in optical fibers edited by j. Infrared supercontinuum generation in softglass fibers.
Modulation control and spectral shaping of optical fiber. Supercontinuum generation in photonics crystal fibers v2. The supercontinuum generation in the designed fiber with selected pump wavelengths and pulse durations were simulated through numerically solving the. Enhanced bandwidth of supercontinuum generated in microstructured fibers g. It can be achieved in certain optical fibers, for example.
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. Participants used skype, free software for internet telephone, and bridget. On the right, the spectrum of the supercontinuum is shown after the output beam passed through a prism. Multiphoton microscopy ultrafast spectroscopy semiconductor device characterization supercontinuum generation optical coherence tomography. We get the optical bandwidth of the sc from 950 to 2400nm at the. Supercontinuum sc generation has become an active research topic over the last few years12 3 456789 because of its unique application in diverse fields, such as in optical coherence tomography. Wavelength conversion and supercontinuum generation in.
An experimental education package on optical fibre raman. 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. Supercontinuum generation in nanostructured core gradient. Supercontinuum generation with photonic crystal fibers and. Experiments and simulations carried out at 1550 nm indicate that the modal composition of the input beam can substantially alter the soliton fission process. Churin d, nguyen t n, kieu k, norwood r a and peyghambarian n 20 midir supercontinuum generation in an integrated liquidcore optical fiber filled with cs2 opt. This work has involved experiments carried out by my own group in france, as well as analysis of results from a number of international groups. A new design of a gasfilled hollowcore optical fiber generates very broad supercontinuum light, spanning deep ultraviolet to near infrared.
Scientists generate supercontinuum light source using liquid core optical fibers and reveal a new type of soliton dynamics. How tapering fibers offers the best of both worlds for visible supercontinuum generation. The scg800 supercontinuum fiber module is a polarizationmaintaining supercontinuum device for use with 800nm range femtosecond lasers. Fibre bragg grating and long period grating sensors in. Visible supercontinuum generation in photonic crystal. Supercontinuum generation in microstructured fibers and novel. Ieee journal of selected topics in quantum electronics. And ico officials now meet face to face several times a year via skype, a technology that wasnt ever dreamed of when ico was founded in 1947. Zheltikov physics department, international laser center, m. Taylor imperial college of science, technology and medicine, london. Supercontinuum generation in photonic crystal fiber.
Supercontinuum generation is a complicated nonlinear process for strong spectral broadening of light. Such semiconductor fibers have enjoyed considerable attention due to their intrinsically high thirdorder nonlinearities, which are markedly higher than in conventional infrared glasses. This chapter presents a state of the art of infrared supercontinuum generation in heavy oxide tellurite optical fibers from the experimental results published by the international community. Difference between ring laser gyroscope and fiber optic gyroscope. Onchip twooctave supercontinuum generation by enhancing. A fourthorder rungekutta in the interaction picture method for simulating supercontinuum generation in optical fibers, j. Supercontinuum generation by photonic crystal fibers roland michaely. 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. Dudley in chapter 3 of the book supercontinuum generation in optical fibers edited by j. We also define coupled power as the power of the supercontinuum measured after the collimating. A picosecond fiber laser was used as the pump source, in a cascaded photonic crystal fiber, ultraflat supercontinuum generation spectrum at 3 db level from 1070 up to 1630 nm is obtained, to our knowledge, the 3 db bandwidth of 560 nm is the most flat supercontinuum generation obtained in photonic. Lasers help produce music of a quality that was once the province of elaborate orchestras.
We employ an optical vortex beam for the generation of femtosecond supercontinuum in a solid state medium. Femtosecond fiber lasers buccaneer del mar photonics. Supercontinuum generation in nonsilica fibers eprints soton. If nothing happens, download github desktop and try again. Sapphire laser such as the tsunami or mai tai ultrafast oscillators. Users may download and print one copy of any publication from the public. 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. What are the requirements for hnlf highly nonlinear fiber in xpm and in supercontinuum generation. Supercontinuum generation in optical fibers updated. Price,2 and thomas feurer1 1institute of applied physics, university of bern, sidlerstrasse 5, 3012 bern, switzerland. 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. Fiber supercontinuum sources and their applications 30 october15 november 2012 123. Supercontinuum generation in silica photonic crystal fiber at.
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. These chipscale platforms promise to miniaturize supercontinuum. Broadband light sources are important for applications such as nonlinear microscopy, optical coherence tomography, frequency metrology, and ultra short pulse compression. We theoretically propose a novel liquid filled suspended core photonic crystal fiber as a new class of microstructure optical fiber for ultrabroad supercontinuum generation. Supercontinuum generation kit your source for fiber. Supercontinuum generation in single crystal sapphire fibers. In many cases, optical fibers are used for supercontinuum generation. Our new approach uses the effect of stimulated stokes raman scattering in a low loss fiber. To further enhance the nonlinearity of the liquidinfiltrated fibers, we introduce a suspended liquid core photonic crystal fiber which. This repository contains the matlab source code for simulating pulse propagation and supercontinuum generation in optical fiber as described by j.
A theoretical study on the supercontinuum generation in a. In many cases, results obtained in pcfs have inspired similar work using optical fiber tapers or highly nonlinear fibers hnlfs presenting comparable enhanced. 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. Supercontinuum generation in integrated photonics platforms. If you want more information, send me an email, we can organize skype chat some time. The accessories allow access to either particular spectral ranges or specific wavelengths within. As tmdoped fiber could be used not only as the gain medium for 2. Investigation of telluriumbased chalcogenide doubleclad.
Install the collimating objective 20x, after the scg800 and adjust it to collimate the output beam. The tapered tellurite microstructure optical fiber for the. Supercontinuum generation in chalcogenide layered spiral. Some special solutions, which are less widely used, are briefly mentioned in the following. Supercontinuum generation in optical fibers book code. Ico newsletter international commission for optics. Since supercontinuum generation in single crystal sapphire fibers can radiate high power supercontinuum in the middleir regime, it will have a great impact on many applications, including sensing and broadband multispectrum free space communications. Dataset for wavelength conversion and supercontinuum. Semiconductor device characterization, supercontinuum generation, optical.