Implementation of an All-Optical Time-Slot-Interchanger Architecture

Zouraraki, O.; Yiannopoulos, K.; Zakynthinos, P.; Petrantonakis, D.; Varvarigos, Emmanouel; Poustie, A.; Maxwell, Graeme; Avramopoulos, H.

doi:10.1109/lpt.2007.902331

Cited by 9 publications

(8 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Considering an input packet order of (I)-(II)-(III), Scenario 1 refers to the case where a (II)-(I)-(III) packet order is obtained at the output, while Scenario 2 results to a (I)-(III)-(II) packet stream. In order to allow for all possible packet re-arrangement scenarios in a three packet stream, our design should be scaled utilizing either more wavelengths and delay lines or, alternatively, utilizing the same three-delay-line structure in a multi-stage setup, as has been analytically studied in [23] and presented in [49]. Both SOAs of WC1 were driven at 300 mA dc current, while the optical power of the CW biasing beam was 3.3 dBm.…”

Section: Experimental Setup and Results For Optical Tsimentioning

confidence: 99%

“…This technology would then allow, the migration of fiber-based delaying and TSI deployments demonstrated so far [48][49][50] towards ultra-compact and highly-functional modules suitable for cooperation with integrated switch matrix designs, such as the one presented in Section 2.…”

Section: Conceptmentioning

confidence: 99%

“…This buffering time can either be extended through the use of cascaded stages of feed-forward buffers, as demonstrated in [49], or it can be utilized more efficiently by a sophisticated optical switch architecture, as proposed in [51]. By employing this approach, throughput values higher than 80% can be achieved [51], even using ns inducing waveguides, showing the way for integrated functional sub-systems.…”

Section: Conceptmentioning

confidence: 99%

See 2 more Smart Citations

Silicon Photonics towards Disaggregation of Resources in Data Centers

et al. 2018

View full text Add to dashboard Cite

Abstract:In this paper, we demonstrate two subsystems based on Silicon Photonics, towards meeting the network requirements imposed by disaggregation of resources in Data Centers. The first one utilizes a 4 × 4 Silicon photonics switching matrix, employing Mach Zehnder Interferometers (MZIs) with Electro-Optical phase shifters, directly controlled by a high speed Field Programmable Gate Array (FPGA) board for the successful implementation of a Bloom-Filter (BF)-label forwarding scheme. The FPGA is responsible for extracting the BF-label from the incoming optical packets, carrying out the BF-based forwarding function, determining the appropriate switching state and generating the corresponding control signals towards conveying incoming packets to the desired output port of the matrix. The BF-label based packet forwarding scheme allows rapid reconfiguration of the optical switch, while at the same time reduces the memory requirements of the node's lookup table. Successful operation for 10 Gb/s data packets is reported for a 1 × 4 routing layout. The second subsystem utilizes three integrated spiral waveguides, with record-high 2.6 ns/mm 2 , delay versus footprint efficiency, along with two Semiconductor Optical Amplifier Mach-Zehnder Interferometer (SOA-MZI) wavelength converters, to construct a variable optical buffer and a Time Slot Interchange module. Error-free on-chip variable delay buffering from 6.5 ns up to 17.2 ns and successful timeslot interchanging for 10 Gb/s optical packets are presented.

show abstract

Section: Experimental Setup and Results For Optical Tsimentioning

confidence: 99%

Section: Conceptmentioning

confidence: 99%

Section: Conceptmentioning

confidence: 99%

See 1 more Smart Citation

Silicon Photonics towards Disaggregation of Resources in Data Centers

et al. 2018

View full text Add to dashboard Cite

show abstract

“…Such a scheme has been experimentally presented in [14] and theoretically in [7]. The contention resolution (CR) scheme shown is equivalent in terms of functionality to k parallel Time Slot Interchangers (TSIs), whose inputs correspond to the various outputs of the spatial-switch unit designs to be launched in the same output fiber.…”

Section: ) Label Swappingmentioning

confidence: 99%

Optical-Logic-Gate Aided Packet-Switching in Transparent Optical Networks

Teimoori

Apostolopoulos

Vlachos

et al. 2008

J. Lightwave Technol.

View full text Add to dashboard Cite

Abstract-The objective of this research is to propose two new optical procedures for packet routing and forwarding in the framework of transparent optical networks. The single-wavelength label-recognition and packet-forwarding unit, which represents the central physical constituent of the switching node, is fully described in both cases. The first architecture is a hybrid opto-electronic structure relying on an optical serial-toparallel converter designed to slow down the label processing. The remaining switching operations are done electronically. The routing system remains transparent for the packet payloads. The second architecture is an all-optical architecture and is based on the implementation of all-optical decoding of the parallelized label. The packet-forwarding operations are done optically. The major subsystems required in both of the proposed architectures are described on the basis of nonlinear effects in semiconductor optical amplifiers. The experimental results are compatible with the integration of the whole architecture. Those subsystems are a 4-bit time-to-wavelength converter, a pulse extraction circuit, a an optical wavelength generator, a 3 8 all-optical decoder and a packet envelope detector.Index Terms-Optical header processing, optical logic gate, optical packet switching, semiconductor optical amplifier (SOA), transparent optical network.

show abstract

“…Specific attention has been given to the integration of semiconductor optical amplifier (SOA)-based, interferometric optical gates (SOA-MZIs) as they have been thought as the main candidates for the implementation of photonic signal processing circuits due to their fast response [2] and integrability into compact, switching units [3]. The performance and cascadability of single element integrated SOA-MZIs has been thoroughly investigated and verified in field trials [4], whereas currently the integration of arrays of SOA-MZIs and their demonstration in multi-gate experiments are revealing the great potential of photonic technology in optical networking [5]. So far, the potentials of multi-gate integration have become evident mainly in single-channel time domain applications [5,6].…”

Section: Introductionmentioning

confidence: 99%