Dispersion penalty reduction using an optical modulator with adjustable chirp

Gnauck, A.H.; Korotky, S.K.; Veselka, J. J.; Nagel, J.A.; Kemmerer, C. T.; Minford, W. J.; Moser, David

doi:10.1109/68.93261

Cited by 165 publications

(28 citation statements)

References 7 publications

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“…They also can be used to generate a controlled amount of chirp depending upon the MZM design [240], which can be used to pre-compensate for the effects of dispersion [278][279][280]. In addition, MZMs can be used to make high-rate high-fidelity pulse-carved return-to-zero (RZ) waveforms that facilitate optimized (nearly matched) receiver design (see section 5) commonly used in series with data-modulating MZMs.…”

Section: Modulationmentioning

confidence: 99%

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Laser communication transmitter and receiver design

Caplan

2007

J Optic Comm Rep

116

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Free-space laser communication systems have the potential to provide flexible, high-speed connectivity suitable for long-haul intersatellite and deep-space links. For these applications, power-efficient transmitter and receiver designs are essential for cost-effective implementation. State-of-the-art designs can leverage many of the recent advances in optical communication technologies that have led to global wideband fiber-optic networks with multiple Tbit/s capacities. While spectral efficiency has long been a key design parameter in the telecommunications industry, the many THz of excess channel bandwidth in the optical regime can be used to improve receiver sensitivities where photon efficiency is a design driver. Furthermore, the combination of excess bandwidth and average-power-limited optical transmitters has led to a new paradigm in transmitter and receiver design that can extend optimized performance of a single receiver to accommodate multiple data rates. This paper discusses state-of-the-art optical transmitter and receiver designs that are particularly well suited for average-power-limited photon-starved links where channel bandwidth is readily available. For comparison, relatively simple direct-detection systems used in short terrestrial or fiber optic links are discussed, but emphasis is placed on mature high-performance photon-efficient systems and commercially available technologies suitable for operation in space. The fundamental characteristics of optical sources, modulators, amplifiers, detectors, and associated noise sources are reviewed along with some of the unique properties that distinguish laser communication systems and components from their RF counterparts. Also addressed is the interplay between modulation format, transmitter waveform, and receiver design, as well as practical tradeoffs and implementation considerations that arise from using various technologies.

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Section: Modulationmentioning

confidence: 99%

“…The ability to adjust the chirp can be used, for example, to compensate for modulator fabrication errors or optimize transmission through a dispersive and nonlinear fiber-optic link [278][279][280]331,332], dynamically if necessary.…”

Section: Mzm Drive Power and Chirp Considerationsmentioning

confidence: 99%

Laser communication transmitter and receiver design

Caplan

2007

J Optic Comm Rep

116

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“…Several techniques have been proposed which can be used to overcome power penalty caused due to non linear effects and chromatic dispersion. These include differential delay methods [4], initial pre-chirp [5], dispersion compensating devices [6], mid spam spectral inversion [7][8][9], dispersion supported transmission [10][11][12][13], optical phase conjugation [14][15][16][17][18]. The use of dispersion compensated fiber (DCF) is considered as the best method to mitigate harmful results of dispersion and also to upgrade single mode fiber links which had already been installed.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Dispersion Compensation using Fiber Bragg Grating in Optical Fiber Communication System

Singh¹,

Rajveer²

2015

IJCA

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Dispersion is the most important factor which determines the data rate and the maximum repeater distance spacing in a fiber optical link. In this paper, investigation has been done on performance of Fiber Bragg Grating as a technique to compensate chromatic dispersion in a 100 km long fiber optic link using different modulation formats such as RZ and NRZ modulation formats and different values of transmission power levels. It was observed that RZ modulation format showed a better performance with a maximum value of Qfactor of 54.5192 than NRZ modulation format which obtained maximum Q-factor value of 31.4792.

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“…Nonlinear effects along with dispersion are the destructive forces for pulse propagation in ultra high-bit-rate optical transmission system [3] and cause power penalty and other impairments in the system. Therefore e, in order to realize the high data rates over long distances down the SM fiber, techniques must be found to overcome signal degradation due to dispersion and nonlinearities .Several methods have been proposed to overcome the impairments caused by chromatic dispersion including initial pre-chirp [4], microchip compensation [5], mid span spectral inversion [6], optical phase conjugation [7][8][9], dispersion-supported transmission [10], dispersion compensating devices [11][12][13] and differential delay method [14][15][16][17][18]. The use of dispersion compensated fiber is an important method for dispersion compensation and to upgrade the already installed links of single mode fiber [19].Dispersion compensated fibers are specially designed fibers with negative dispersion.…”

Section: Introductionmentioning

confidence: 99%

Comparison of Pre-, Post- and Symmetrical-dispersion Compensation Schemes for 10/15 GBPS using Different Modulation Formats at Various Optical Power Levels using Standard and Dispersion Compensated Fibers

Rajani¹,

Pal²,

Sharma³

2012

IJCA

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In this paper, we investigate pre-, post-and symmetricaldispersion compensation methods for 10/15Gb/s using different modulation formats like NRZ, RZ and RZ Super gaussian using standard and dispersion compensated fibers through computer simulations to optimize high data rate optical transmission. The influence of EDFA power of fiber has been studied to evaluate the performance of optical communication systems. The performance characteristics like bit error rate, Q parameter, required optical power at the output are studied by simulating different systems. The influence of variation in length of fiber of each span with the variation of power of EDFA is also studied, and conclude that post and symmetric scheme is better.

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Dispersion penalty reduction using an optical modulator with adjustable chirp

Cited by 165 publications

References 7 publications

Laser communication transmitter and receiver design

Laser communication transmitter and receiver design

Analysis of Dispersion Compensation using Fiber Bragg Grating in Optical Fiber Communication System

Comparison of Pre-, Post- and Symmetrical-dispersion Compensation Schemes for 10/15 GBPS using Different Modulation Formats at Various Optical Power Levels using Standard and Dispersion Compensated Fibers

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