40 Gbit/s polarization-independent, push-pull InP Mach-Zehnder modulator for all-optical regeneration

Leclerc, O.; Brindel, P.; Rouvillain, D.; Pincemin, Erwan; Dany, B.; Desurvire, E.; Duchet, C.; Boucherez, E.; Bouchovle, S.

doi:10.1109/ofc.1999.766068

Cited by 6 publications

(3 citation statements)

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“…To improve fabrication yields, they are typically constructed from y-junction couplers so that there is usually only single input (E in1 ) and output ports (E out1 )-with the secondary input and output ports being unguided waste ports. MZMs are also fabricated in semiconductor materials such as GaAs [143], InP [291,292], Si [293,294], and optical polymers [295]. For ultra-fast applications, nonlinear interferometric switches constructed from fibers, semiconductor optical amplifiers, and other nonlinear materials [296][297][298][299][300][301][302], have demonstrated 100 GHz class all-optical logic, wavelength conversion, and clock-recovery.…”

Section: Mach-zehnder Modulator (Mzm)mentioning

confidence: 99%

Laser communication transmitter and receiver design

Caplan

2007

J Optic Comm Rep

117

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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: Mach-zehnder Modulator (Mzm)mentioning

confidence: 99%

Laser communication transmitter and receiver design

Caplan

2007

J Optic Comm Rep

117

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“…WDM synchronicity can be achieved either by use of appropriate time-delay lines located within a DMux/Mux apparatus ( fig.2, bottom left), or by making the WDM channels inherently time-coincident at specific regenerator locations ( fig.2, bottom right). Clearly, serial regeneration scheme is far simpler and cost-effective than the parallel version; however, the regenerator must be WDM crosstalk free, as is the case of our 40GHz Mach-Zehnder of [5]. In the view of experimentally assessing the concept, we demonstrate a 160Gbit/s all-optical regenerator, as based on simultaneous optical regeneration (regeneration multiplex-ing) of four 200GHz-spaced 40Gbit/s channels [9].…”

Section: All Optical Regeneratorsmentioning

confidence: 99%

“…The figure also shows a picture of a newly-developed 40GHz InP Mach-Zehnder modulator in its module. This device combines both polarization and wavelength-independence in the 1545-1560nm range and provides adjustable IM/PM response through a dual-electrode, push-pull configuration; it is also immune to WDM crosstalk[5].…”

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confidence: 99%

All-optical regeneration

Chandrasekar

2001

SPIE Proceedings

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The irresistible growth in capacity demand for optical transmission systems calls for an increase in both channel granularity and bit rate, while maintaining signal quality. The document reviews recent developments in the field of all-optical regeneration and show its potential to meet the challenge with costeffective implementation. We also report a 160Gbit/s all-optical regenerator based on the simultaneous optical regeneration of four 40Gbit/s WDM channels in a single polarization-insensitive modulator chip by using an alloptical cad simulation tool. Regenerated transmission with 0.2(bit/s)/Hz spectral efficiency is achieved over 10,000km distance.

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