Topic
Chirp
About: Chirp is a research topic. Over the lifetime, 14403 publications have been published within this topic receiving 178726 citations.
Papers published on a yearly basis
Papers
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TL;DR: In this article, the results of a theoretical analysis of the self-phase modulation in a single-mode fiber are presented for the achievable compression and compressed pulse quality as functions of fiber length and input pulse intensity.
Abstract: The use of self-phase modulation in a single-mode fiber to chirp an optical pulse, which is then compressed with a grating-pair compressor, has been shown to be a practical technique for the production of optical pulses at least as short as 30 fsec. We report the results of a theoretical analysis of this process. Numerical results are presented for the achievable compression and compressed pulse quality as functions of fiber length and input pulse intensity. These results are given in normalized units such that they can be scaled to describe a wide variety of experimental situations and can be used to determine the optimum fiber length and compressor parameters for any given input pulse. Specific numerical examples are presented that suggest that the technique will generally be useful for input pulses shorter than about 100 psec. For energies of a few nanojoules per pulse, the compressed pulse widths will typically be in the femtosecond regime.
561 citations
Book•
01 Jan 1985
TL;DR: A survey of acoustic waves in Elastic Solids and the multi-Strip Coupler and its Applications, and devices for Spread-Spectrum Communications.
Abstract: 1. Introductory Survey. 2. Acoustic Waves in Elastic Solids. 3. Electrical Excitation at a Plane Surface. 4. Analysis of Interdigital Transducers. 5. The Multi-Strip Coupler and its Applications. 6. Propagation Effects and Materials. 7. Delay Lines and Multi-Phase Transducers. 8. Bandpass Filters. 9. Chirp Filters and Their Applications. 10. Devices for Spread-Spectrum Communications. Appendices. References. Index.
539 citations
TL;DR: The use of a linearly chirped Bragg grating filter for dispersion cancellation in an optical-fiber link is discussed and calculations show that, with the proper taper function, the filter can have a high reflectivity and a quasi-constant nonzero dispersion, proportional to the inverse of the chirp.
Abstract: The use of a linearly chirped Bragg grating filter for dispersion cancellation in an optical-fiber link is discussed. Numerical and theoretical calculations are made, which show that, with the proper taper function, the filter can have a high reflectivity and a quasi-constant nonzero dispersion, proportional to the inverse of the chirp. The filter can compress dispersion-broadened pulses by factors of 2-5 or more, if many filters are cascaded. Its compactness and efficiency would make it suitable for on-line implementation.
531 citations
TL;DR: In this paper, the authors describe a compact, economic and versatile diode laser system based on commercial laser diodes, optically stabilized by means of feedback from a diffraction grating, which offers singlemode operation with a linewidth of a few 100 kHz, continuous scans over 25 GHz, high chirp rates (up to 9 GHz/ms) and FM-modulation up to the GHz range.
519 citations
TL;DR: In this paper, a general formula is given that expresses frequency chirping in some types of external intensity modulators, such as the loss modulator, directional-coupler-type modulator and total-internal-reflection type modulator.
Abstract: A general formula is given that expresses frequency chirping in some types of external intensity modulators, such as the loss modulator, directional-coupler-type modulator, Mach-Zehnder interferometry-type modulator, and total-internal-reflection-type modulator. The chirping phenomenon treated is caused by the phase modulation due to an accompanied refractive index change. It is uniquely expressed in terms of an alpha -parameter that contributes to frequency chirping in the same manner as in the direct modulation of a semiconductor laser. In addition, the transmission bandwidth of a single-mode fiber system using an external modulator is discussed and compared with the results obtained utilizing direct laser modulation. >
487 citations