Addressing Manufacturability and Reliability of MEMS-based WSS

Hennin, S. de; Wall, Pierre; Moffat, Steven; Keyworth, B.P.; Colbourne, Paul

doi:10.1109/ofc.2007.4348953

Cited by 7 publications

(5 citation statements)

References 2 publications

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“…There are several kinds of 1 × N WSSs, such as microelectro mechanical system (MEMS) based WSS [11], liquid crystal on silicon (LCOS) based WSS [12], and planar lightwave circuit (PLC) based WSS [13]. Herein, we take the PLCbased WSS as an example to elaborate the function of the 1 × N WSS.…”

Section: A 1 × N Wssmentioning

confidence: 99%

Modular WSS-based OXCs for Large-Scale Optical Networks

Ye,

Chen

2020

Preprint

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The explosive growth of broadband applications calls for large-scale optical cross-connects (OXCs). However, the classical wavelength selective switch (WSS) based OXC is not scalable in terms of the size of employed WSSs and the cabling complexity. To solve this problem, we propose a three-phase approach to construct a modular WSS-based OXC. In phase 1, we factorize the interconnection network between the input stage and the output stage of the traditional OXC into a set of smallsize interconnection networks. In phase 2, we decompose each WSS into a two-stage cascaded structure of small-size WSSs. In phase 3, we combine the small-size interconnection networks with the small-size WSSs to form a set of small-size OXC modules. At last, we obtain a modular OXC, which is a network of smallsize OXCs. Similar to the classical OXC, the modular OXC is nonblocking at each wavelength and possesses a self-routing property. Our analysis shows that the modular OXC has small cabling complexity and acceptable physical-layer performance.

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Section: A 1 × N Wssmentioning

confidence: 99%

Modular WSS-based OXCs for Large-Scale Optical Networks

Ye,

Chen

2020

Preprint

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“…It should be noted that WSS is the ROADM sub-system that has been extensively employed in optical switch applications. In addition, microelectromechanical systems (MEMS) [46] and WSS based on LCoS [47] have been commercialized for different applications. Also, WSS by means of LCoS operates on the principle of "disperse and select," in which the inward bound WDM channels are dispersed into a distinct wavelength channel and subsequently relayed by LCoS through programmable grating patterns.…”

Section: Diagram Of a Fourier Transform Through A Positive Lens A Comentioning

confidence: 99%

Spatial Light Modulation as a Flexible Platform for Optical Systems

Pinho¹,

Alimi²,

Lima³

et al. 2019

Telecommunication Systems - Principles and Applications of Wireless-Optical Technologies

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Spatial light modulation is a technology with a demonstrated wide range of applications, especially in optical systems. Among the various spatial light modulator (SLM) technologies, e.g., liquid crystal (LC), magneto-optic, deformable mirror, multiple quantum well, and acoustic-optic Bragg cells, the ones based on liquid crystal on silicon (LCoS) have been gaining importance and relevance in a plethora of optical contexts, namely, in telecom, metrology, optical storage, and microdisplays. Their implementation in telecom has enabled the development of high-capacity optical components in system functionalities as multiplexing/demultiplexing, switching and optical signal processing. This technology combines the unique lightmodulating properties of LC with the high-performance silicon complementary metal oxide semiconductor properties. Different types of modulation, i.e., phase, amplitude or combination of the two, can be achieved. In this book chapter, we address the most relevant applications of phase-only LCoS SLM for optical telecom purposes and the employment of SLM technology in photonic integrated circuits (PICs) (e.g., field-programmable silicon photonic (SiP) circuits and integrated SLM application to create versatile reconfigurable elements). Furthermore, a new SLMbased flexible coupling platform with applications in spatial division multiplexing (SDM) systems (e.g., to efficiently excite different cores in MCF) and characterization/testing of photonic integrated processors will be described.

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“…In the literature, there has been extensive research focusing on ROADM architectures, in particular, on their add/drop port capabilities [1][2][3]. Among these studies, there is a consensus that the three key features of ROADMs are colorlessness, directionlessness, and contentionlessness [4][5][6][7][8][9][10][11]. These features are defined as follows.…”

Section: Introductionmentioning

confidence: 99%

Impact of ROADM Colorless, Directionless, and Contentionless (CDC) Features on Optical Network Performance [Invited]

Gao

Shen

et al. 2012

J. Opt. Commun. Netw.

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In the context of dynamic lightpath service provisioning, this paper evaluates the impact of the colorless, directionless, and contentionless (CDC) features of reconfigurable optical add/drop multiplexers on wavelength division multiplexing optical transport networks (OTNs). Under the assumption of fixed shortest path routing, we first develop analytical models for evaluating the impacts of the CDC features. Next, allowing for adaptive lightpath route selection, we propose three lightpath routing and add/drop port selection strategies. Simulation studies indicate that the proposed analytical models can effectively predict the performance of the OTNs under different add/drop port capabilities. The simulation results also show that, among the three features, the colorless feature seems to play the most important role in improving the lightpath blocking performance. In addition, under the colorless add/drop capability, there exists a saturation phenomenon: when the number of add/drop ports per nodal degree reaches a certain threshold level, performance improvement will be marginal even if the number of add/drop ports is further increased. Finally, comparing the three adaptive lightpath routing and add/drop allocation strategies, the results show that the consideration of the add/drop port state information in lightpath routing and wavelength assignment can significantly improve the lightpath blocking performance.

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Addressing Manufacturability and Reliability of MEMS-based WSS

Cited by 7 publications

References 2 publications

Modular WSS-based OXCs for Large-Scale Optical Networks

Modular WSS-based OXCs for Large-Scale Optical Networks

Spatial Light Modulation as a Flexible Platform for Optical Systems

Impact of ROADM Colorless, Directionless, and Contentionless (CDC) Features on Optical Network Performance [Invited]

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