Experimental investigation at 10 Gb/s of the noise suppression capabilities in a pass-through configuration in SOA-based interferometric structures

Wolfson, D.; Fjelde, T.; Kloch, A.; Janz, C.; Coquelin, A.; Guillemot, I.; Gaborit, F.; Poingt, F.; Renaud, M.

doi:10.1109/68.853517

Cited by 17 publications

(8 citation statements)

References 5 publications

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“…HMZI1 had unequal splitting ratios (70/30) at its input and output couplers and was configured to provide self-switching operation for the incoming burst-formatted traffic, by also using different bias currents for its two SOAs [52]. With this arrangement, the optical gain saturation properties of the two SOAs resulted in high gain for the low-power packets and low gain for the high-power packets, delivering nearly power-equalised packets at the output of HMZI1.…”

Section: Methodsmentioning

confidence: 99%

Optical signal processing using integrated multi-element SOA–MZI switch arrays for packet switching

Pleros

Zakynthinos

Poustie³

et al. 2007

IET Optoelectron.

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The use of discrete but interconnected SOA-MZI switches for performing logical and highly functional processing tasks, demonstrating the multi-functional potential of the photonic switching elements is discussed. An all-optical 3R burst-mode receiver consisting of four SOA-MZI switches and operating error-free with 40 Gb/s optical bursts, proving that interconnection of multiple switching units can lead to the realisation of key network node functionalities offering increased intelligence at the physical layer is presented. In order to allow for easier interconnectivity between the SOA-MZI switches and to provide compactness and cost effectiveness to the developed subsystems, the integration of multiple switches into the same platform is proposed. To this end, the implementation of the first integrated quadruple SOA-MZI switch array is reported, increasing the integration density level and reducing packaging and pigtailing costs. Finally, possible applications of integrated multiple switch arrays are discussed, indicating their suitability for producing compact circuits performing common processing tasks in a multiwavelength environment, as well as their potential to lead to the development of an all-optical highspeed packet switched node by implementing critical packet switching functionalities in a compact and efficient way.

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Section: Methodsmentioning

confidence: 99%

Optical signal processing using integrated multi-element SOA–MZI switch arrays for packet switching

Pleros

Zakynthinos

Poustie³

et al. 2007

IET Optoelectron.

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“…So far, power equalization but without 2R regeneration has been reported utilizing optical limiting amplifier configurations [3,4]. Power equalization and 2R regeneration of continuous 10 Gb/s data streams have been demonstrated with a SOA-based delayed interferometer [5] and a Michelson interferometer [6]. 2R burst mode reception has been reported with a circuit that includes a 2-element module consisting of two gain-clamped SOAs for optical power limiting and a wavelength converter configuration for 2R regeneration, demonstrating error-free reception of optical bursts at 40 Gb/s with packet per packet power fluctuation of 8 dB [7].…”

Section: Introductionmentioning

confidence: 99%

“…In addition, the different driving conditions of the two SOAs in combination with the unbalanced nature of MZI provide a differential phase shift between the two spatial components, since the packet stream traveling through SOA1 experiences a higher gain value and as a result a greater phase shift than the corresponding signal traveling through SOA2, according to the relationship φ = -(α n /2)lnG (α n is the linewidth enhancement factor) [9]. By appropriately adjusting the two driving current values, an approximately π differential phase shift between the two power equalized packet streams at the two branches can be obtained, whereas the noise accompanying the signal will be suppressed [6] as a result of the interferometric transfer function of the device. In this respect, self-switching operation is achieved and the interference of the two spatial components at the output coupler of the MZI yields a nearly-noise released power equalized packet stream at the Switched port (S-port) of the MZI.…”

Section: Introductionmentioning

confidence: 99%

40 Gb/s 2R Burst Mode Receiver with a single integrated SOA-MZI switch

Kanellos¹,

Pleros²,

Petrantonakis³

et al. 2007

Opt. Express

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We demonstrate a novel scheme for 2R burst mode reception capable of operating error-free with 40 Gb/s variable length, asynchronous optical data packets that exhibit up to 9 dB packet-to-packet power variation. It consists of a single, hybrid integrated, SOA-based Mach-Zehnder Interferometer (SOA-MZI) with unequal splitting ratio couplers, configured to operate as a self-switch. We analyze theoretically the power equalization properties of unequal splitting ratio SOA-MZI switches and show good agreement between theory and experiment.

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“…By mapping the input pulse onto the part of the transfer function where the slope is larger than 1, it is possible to achieve amplification only for the data part of the signal, thus relatively reducing the output signal noise. OSNR improvements have been achieved in integrated devices incorporating two SOAs and a y-branch coupler in conjunction with an erbium preamplifier to give noise suppression at 10 Gbit=s of 4.5 dB relative to a single SOA [2]; and 40 Gbit=s [3].…”

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confidence: 99%

“…It is a monolithically integrated Michelson interferometer (MI) [2][3][4], consisting of two intersecting twin-contact semiconductor optical amplifiers (SOAs) in which a splitter=recombiner mirror is formed at the waveguide junction to provide Michelson functionality (Fig. 1).…”

mentioning

confidence: 99%