Optical pulse compression based on nonlinear silicon. Francois, nonlinear propagation of ultrashort pulses in optical fibers. Picosecond laser source with single knob adjustable pulse. Supercontinuum generation and pulse compression in short fibers for optical pulses generated by 1. Pdf almost chirp free optical pulse compression using non linear fiber. Several pulse compression schemes have also been proposed that are based on soliton propagation,and in particular,rely on the robust nature of optical solitons. Optical pulse compression reflectometry with high spatial resolution and long range weiwen zou and jianping chen state key laboratory of advanced optical communication systems and networks, department of electronic engineering, shanghai jiao tong university, shanghai, 200240, china email. Comparative study of lossy and lossless data compression in distributed optical fiber sensing systems article pdf available in optical engineering 562.
Chapter 3 nonlinear pulse propagation mit opencourseware. In these techniques a long duration pulse is used which is either phase or frequency modulated before transmission and the received signal. Opticalpulse compression article about opticalpulse. A prism compressor is an optical device used to shorten the duration of a positively chirped ultrashort laser pulse by giving different wavelength components a different time delay. However, in optical pulse compression, the pulse bandwidth will broaden significantly. Alloptical pulse compression of broadband microwave signal based on stimulated brillouin scattering xin long, 1 weiwen zou, 1, 2, and jianping chen1, 2 1state key laboratory of advanced optical communication systems and networks, department of electronic engineering, shanghai jiao tong university, shanghai 200240, china. He was a visiting scholar with the hong kong university of science and technology from 1995 to 1997.
Pulse compression method for radar signal processing. Here the laser pulses with a pulse width of 3 ns and energy of 1 mj come from a. But there nonlinear optical pulse compression was applied in pulsed lasers with low repetition rate. Compression of secant and gaussian pulse using nonlinear.
The output is the autocorrelation of the modulated pulse. Comparative study of lossy and lossless data compression in. Pulse compression a pulse propagating through an optical. Compression of fiber supercontinuum pulses to the fourierlimit in a highnumericalaperture focus haohua tu,1, yuan liu,1 dmitry turchinovich,2 and stephen a. A chirp introduced by the fiber was not well matched to the chirp of the grating compressor leading to poor quality of the compression and low compression ratio. In the phasecoded pulse compression, a long pulse with duration t p is divided into n subpulses, called chips, of width t c. The peak power of the correlator output is increased by the pulse compression ratio. Analysis of optical pulse propagation with abcd matrices. The pulse energies of up to 156 j and the average power of 15. Pdf design rules of optical pulse compression using fiberfiber. The interest in using large lasers to achieve a very short and intense pulse for generating fusion plasma has provided a strong impetus to reexamine the possibilities of optical pulse compression at high energy.
With a simple model, scaling laws are obtained for self compression in the limit of a large soliton number. Pulse compression gratings kaiser optical systems, inc. Engineering, shanghai jiao tong university, shanghai 200240, china. Highdegree pulse compression with convex dispersion. Generation of high repetition rate, narrow optical pulses 1, 419 is a topic of current research in optical engineering all over the globe. Ultrafast optical pulse shaping using dielectric metasurfaces. Figure 1 shows the construction of such a compressor. Pdf pulse compression using a tapered microstructure. All optical pulse compression of broadband microwave signal based on stimulated brillouin scattering xin long, 1 weiwen zou, 1, 2, and jianping chen1, 2 1state key laboratory of advanced optical communication systems and networks, department of electronic engineering, shanghai jiao tong university, shanghai 200240, china. Pdf modeling chirp free optical pulse compression using. An optical pulse of 50fs width from the colliding pulse modelocked dye laser oscillating at 620 nm was compressed down to 6 fs by the pulse compression technique 22. With the rp fiber power software, one simulate the compression of ultrashort pulses for example, by spectral broadening in a fiber amplifier or a passive fiber, followed by dispersive compression with a pair of prisms or diffraction gratings, or with a numerically optimized compressor. Temporal solitons and pulse compression in photonic. Conventional techniques of optical pulse generation produce pulses of.
Nonlinear optical pulse compression of picosecond pulses typically requires long lengths of optical fiber and multiple components. Nonlinear coupled waveguide is studied for optical pulse compression, utilizing the power. Optical pulse compression schemes that use nonlinear bragg. Suppression of twophoton absorption in the gainp material is crucial to these. The pulse is chirped and can be repre sented by at e1t i. In addition to the wellknown parallels between pulse dispersion in optical. Development of radar pulse compression techniques using.
Compression of 3 ps input pulses to a minimum pulse duration of 580 fs 10 pj is achieved. Picosecond pulse compression to femtosecond level by the. Pdf alloptical pulse compression of broadband microwave. Treacy, optical pulse compression with diffraction gratings, ieee j. Range enlargement of optical pulse compression reflectometry based on amplified heterodyne detection weiwen zou, lei yu, shujie wang, and jianping chen state key laboratory of advanced optical communication systems and networks, department of electronic engineering, shanghai jiao tong university, shanghai, 200240, china email. Highpower femtosecond optical pulse compression by using spatial. Figure 5 shows the optical fiber dispersions parameters. Heritage bell communications research, 331 newman springs road, red bank, new jersey 077017020 r. Compression of amplified chirped optical pulses sciencedirect. Alloptical pulse compression of broadband microwave signal based.
The stretched pulse is amplified and then compressed by a double grating compressor. The pulse durations of 780 fs were obtained after pulse compression. Opticalpulse generation and compression using a combdriven. Skolnik, in reference data for engineers ninth edition, 2002. Highdegree pulse compression with a convex dispersion. The variation of frequency detuning and coupling coefficient with respect to the length of the grating is also studied. As a fibers diameter decreases due to the tapering, so. Massachusetts institute of technology department of electrical. Numerical results for gaussian and hyperbolicsecant initial pulse shapes and various initial amplitudes are used to verify the approximate analytic result and to determine accurate scaling constants. Two pulse shortening schemes based on the nonlinear propagation of picosecond pulses from a nd.
Pulse compression processing based on stimulated brillouin. From march 2015 to june 2016, he was with the microwave photonics research laboratory, college of electronic and information engineering, nanjing university of. The small modal area a eff 10 m2 combined with a slowlight enhanced optical field allow for ultralow threshold gwcm2 pulse compression at millimeter length scales. Ultrafast optical pulse shaping using dielectric metasurfaces science. Optical pulse compression and its effects using fiber bragg. Pulse compression techniques are used in radar systems to avail the bene. Lecture notes ultrafast optics electrical engineering. Highpower femtosecond optical pulse compression by using spatial solitons d. Supercontinuum generation and pulse compression in short. International journal of science and engineering applications volume 3 issue 2, 2014, issn23197560 online.
Compression of fiber supercontinuum pulses to the fourier. Optimal output coupling, optical pulse tailoring qswitching, mode locking, picosecond to femtosecond pulse compression. Selfphase modulation and optical pulse compression influenced by stimulated raman scattering in fibers a. Yag laser in singlemode optical fibres are described. Opticalpulse generation and compression using a comb. Ece 478578 lasers and laser applications in engineering summer 2000 dr. Singlediffractiongrating and grism pulse compressors vikrant chauhan, pamela bowlan, jacob cohen, and rick trebino school of physics, georgia institute of technology, 837 state street, atlanta, georgia 30332 usa.
We show that the primary limitation on pulse compression is the loss due to mode leakage. Osa compression of optical pulses chirped by selfphase. Turnkey femtosecond solidstate lasers are now commercially. Optical spectra after edfa and pulse shaper for pump wavelength. Pulse compression an overview sciencedirect topics. Department of electrical engineering and computer science 6. Find out information about optical pulse compression. Welcome to albert tituss webpage school of engineering.
Leaird bellcore, 331 newman springs road, red bank, new jersey 07701 received may 1, 1991 we demonstrate a novel pulse compression technique that uses the selfconfinement of twodimensional spatial. Selfdecompression selfdispersion is also treated in the same fashion. Study of chirped pulse compression in optical fiber for all fiber cpa system arpan dutta department of physics, university of burdwan, burdwan, west bengal, india abstract fiber lasers are highly regarded in present laser technological fields due to their high efficiency, beam quality and easy thermal management. Leaird bellcore, 331 newman springs road, red bank, new jersey 07701 received may 1, 1991 we demonstrate a novel pulse compression technique. Sep 27, 2009 our device, a temporal imaging system relying on temporal lenses implemented using nanofabricated silicon photonic chips, allows for the temporal compression of optical waveforms. The convex dispersion profile provides an accurate description of the. Introduction recently, we have proposed a highdegree pulse compression scheme with soliton orders n2, 3, 4, and 5 in two or.
Such pulses have a broadband optical spectrum, and can be created by modelocked oscillators. The stretched pulse is amplified and then compressed by a double grating compressor 3. Optical pulse compression and its effects using fiber. With suitable fiber design engineering, compression to the fewopticalcycle. We report the results of a theoretical analysis of this process. A combination of selfphase modulation and group velocity dispersion in optical fiber was used to expand the spectrum and to chirp the pulse of a picosecond oscillator. A long pulse is deliberately produced by stretching a short, lowenergy pulse in a single mode optical fiber. For the first time, we study of the dependence of the optical pulsewidth and peak power of gainswitched pulses as a function of the temporal period using a comb generator. Picosecond lasers with raman frequency and pulsewidth.
Boppart1 1biophotonics imaging laboratory, beckman institute for advanced science and technology, university of illinois at urbanachampaign, urbana, illinois 61801, usa. In optics, an ultrashort pulse of light is an electromagnetic pulse whose time duration is of the order of a picosecond 10. Pulse compression denotes linear or nonlinear techniques for reducing the durations of optical pulses. The pulse is linearly chirped in the fiber by the combination of group velocity dispersion and selfphase modulation 2. Ilayaraja abstract the optical pulse compression is analyzed by nlse using fiber bragg grating fbg with the help of second order dispersion. Welcome to optical pulse we care about you and your clear vision. Pulse compression allows a radar to utilize a long pulse to achieve a large radiated. The pulse is linearly chirped in the fiber by the com bination of group velocity dispersion and selfphase modulation 2. School of electrical engineering, purdue university, west lafayette, in 47907, u.
In 1994, he joined the ultrafast laser laboratory, school of precision instruments and optoelectronics engineering, tianjin university. Highpower femtosecond optical pulse compression by using. Kaiser is a pioneer in the use of vph gratings in ultrafast lasers with some of our earliest pulse compression gratings being designed for the center for ultrafast optical science located at the university of michigan and delivered in 1995. Here, p is the optical path length of the compressor, whose derivative with respect to.
Department of electrical engineering and computer science. In some cases, the obtained output pulses are far shorter than the input pulses. May 26, 2015 recent developments in dispersion engineering on a chip are proving to be key enablers of high. Solitoneffect optical pulse compression in cmoscompatible. Picosecond lasers with raman frequency and pulsewidth conversion for range finding n. Recent progress in the development of pulse compression. Pulse compression allows one to generate pulses of long duration minimizing damage problems and subsequently compress optical. These systems not only have been treated as a fundamental problem in optics but have been applied to the development of narrow band filters especially for use in astronomy. The use of selfphase modulation in a singlemode fiber to chirp an optical pulse, which is then compressed with a gratingpair compressor, has been shown to be a practical technique for the production of optical pulses at least as short as 30 fsec. We calculate the pulse compression in a tapered microstructure optical fiber with four layers of holes. Singlediffractiongrating and grism pulse compressors. Recent developments in dispersion engineering on a chip are proving to be key enablers of high. A comprehensive study on the effect of frequency detune, coupling coefficient, figure of merit, and compression factor is done. In this paper, solitoneffect temporal compression of optical pulses is demonstrated on a cmoscompatible ultrasiliconrich nitride usrn waveguide.
The hologram is made in a photorefractive material by the interference of the broadened pulse and the corresponding fourier transform limited pulse. Chapter 3 nonlinear pulse propagation there are many nonlinear pulse propagation problems worthwhile of being considered in detail, such as pulse propagation through a twolevel medium in the coherent regime, which leads to selfinduced transparency and solitons governed by the sinusgordonequation. Singlediffractiongrating and grism pulse compressors vikrant chauhan, pamela bowlan, jacob cohen, and rick trebino school of physics, georgia institute of. With our state of the art selection of high quality, name brand glasses, you will easily find the perfect pair for you. For many years the behavior of collections of optical elements which have the ability to transform the polarization state of light has been studied. Theoretical calculations predict that the pulse compression to less than 15 of the original pulse width is achievable with a loss of 3 db. Picosecond laser source with single knob adjustable pulse width r. May 31, 2019 because of the broadband nature of ultrafast pulses, the most common embodiment of pulse shaping involves some form of dispersion engineering, such as pulse compression for coherent communication or nonlinear microscopy, and pulse stretching for chirped pulse amplification.
The optical pulse compression is analyzed by nlse using fiber bragg grating fbg with the help of second order dispersion. Trends in engineering research iceter15, at chennai. Pulse stretching and compressing using grating pairs. The pulse compression feature of lunas optical vector analyzer ova software can be used to compress the impulse response of a device under test dut by mathematically removing dispersion effects from the measured device response. Alloptical pulse compression of broadband microwave signal. Recent progress in the development of pulse compression gratings article pdf available in proceedings of spie the international society for optical engineering 59. Although the dispersion of the prism material causes different wavelength components to travel along different. Optical pulse compression reflectometry with high spatial. Chirped pulse amplification center for ultrafast optical. Optical pulse compression and its effects using fiber bragg grating manoj divagar. Selfphase modulation and optical pulse compression influenced by. The shortening of the duration of an optical pulse by techniques similar to those used in chirp radar, in which a frequency sweep is imposed on the pulse.
Alloptical pulse compression of broadband microwave. Secondstage pulse compression, without dispersion compensation. Figure 6 shows the soa pulse compression project layout. Optical pulse compression in dispersion decreasing photonic crystal. Pulse stretching and compressing using grating pairs grating pairs in order to reach shortest pulses after dispersive propagation, it is possible to compensate this pulse broadening by applying dispersion of the opposite sign, i. Pdf an optical pulse compressor using a normal dispersion fiber combined with a linearly chirped fiber grating instead of a bulk grating pair. Femtosecond pulse compression techniques that employ selfphase modulation in an optical fiber to generate spectral bandwidth have developed to the. Alloptical pulse compression of broadband microwave signal based on stimulated brillouin scattering article pdf available in optics express 245 december 2015 with 118 reads. Observation of soliton pulse compression in photonic crystal. Wai3 1department of physics, national institute of technology, rourkela, orissa, 769 008, india 2school of engineering, fraser noble building, kings college, university of aberdeen, aberdeen ab24 3ue, uk. Numerical results are presented for the achievable compression and compressed. Since the effect of pbg is not included in the nlse approximation, the optical pulse can continue to compress as long as the secondorder dispersion decreases exponentially. Selfphase modulation and optical pulse compression.
Optical pulse compression using polarizing techniques. Periodic structures, such as fiber bragg gratings, are highly dispersive at wavelengths outside of the photonic bandgap. Head of the school of electrical and computer engineering. We propose an holographic method for the compression or shaping of optical pulses broadened by group velocity dispersion. Ultrafast waveform compression using a timedomain telescope. Rp photonics encyclopedia pulse compression, shortening. In the first experiment, a spectralwindowing technique was employed to compress selfphase modulated pulses exiting 100 m of optical fibre, and compression factors of 2.
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