Reconfigurable free-space optical cores for storage area networks

Wilkinson, Timothy D.; Crossland, Bill; Collings, N.; Zhang, Fan; Fan, Mark

doi:10.1109/mcom.2005.1404601

Cited by 18 publications

(4 citation statements)

References 10 publications

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“…Free-space optics, such as shutter-based free-space optical switch and beam-steering switches with liquid crystal on silicon (LCoS) spatial light modulators (SLMs) [17], have been proposed as potential low-cost optical switching technologies [18] since their major advantage is that there is no cross-coupling between light beams, enabling the provision of very highly parallel optical interconnections with a much higher path density than what is possible with electronics [19]. Recent experimental implementations [20,21] have also demonstrated that SLM-based freespace optical switching can be implemented based on a fiber ribbon to a fiber ribbon switching architecture using either a single wavelength per fiber or multiple wavelengths per fiber.…”

Section: Introductionmentioning

confidence: 99%

Design and Performance Evaluation of Optical Ethernet Switching Architecture with Liquid Crystal on Silicon-Based Beam-Steering Technology

Cheng

Chou

Shiau

et al. 2016

Fiber and Integrated Optics

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A non-blocking optical Ethernet switching architecture with liquid crystal on a silicon-based beam-steering switch and optical output buffer strategies are proposed. For preserving service packet sequencing and fairness of routing sequence, priority and round-robin algorithms are adopted at the optical output buffer in this research. Four methods were used to implement tunable fiber delay modules for the optical output buffers to handle Ethernet packets with variable bit-rates. The results reported are based on the simulations performed to evaluate the proposed switching architecture with traffic analysis under a traffic model captured from a real-core network. ARTICLE HISTORY

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Section: Introductionmentioning

confidence: 99%

Design and Performance Evaluation of Optical Ethernet Switching Architecture with Liquid Crystal on Silicon-Based Beam-Steering Technology

Cheng

Chou

Shiau

et al. 2016

Fiber and Integrated Optics

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“…This structure is based on the principle of replicating the data from each input port (fan-out) to some or all of the output ports (shuttering and fan-in) ( Fig. 1) [06]. Such shutter-based switching architecture has the advantages of having a large number of ports with relatively few optical components, which leads to a compact design.…”

Section: Fundamentals Of Shutter-based Optical Switchingmentioning

confidence: 99%

Reconfigurable free-space optical switching technologies for storage area networks

et al. 2009

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“…Liquid Crystal on Silicon (LCoS) based optical wavelength switches were considered the most key-enabling technology in future optical networks [10][11]. Moreover, hologram beam steering switches based on LCoS spatial light modulator (SLM) have been reported as a promising optical switch technology for edge node application [12]. However, the previously demonstrated optical switches based on LCoS devices, even supporting multicasting, were limited to a 1xN switching architecture [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Asymmetric Optical Wavelength Switch Based on LCoS-SLM for Edge Node of Optical Access Network

Chou

Chen

2021

IEEE Photonics J.

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A novel design of optical wavelength switch, based on an asymmetric switching architecture for edge node implementation, is presented in this paper. Compared to previous research for optical core transport network applications, the proposed work has a unique aspect to build dynamic multicasting and spectral equalization, vital functionalities for optical wavelength switch in the edge of optical access networks. An optical wavelength switch was experimentally implemented and evaluated in a 4x16 switching architecture to demonstrate the concept. This dynamic multicasting and spectral equalization were achieved by utilizing liquid crystal on a silicon spatial light modulator (LCoS-SLM) device. An optimal design of computer-generated holograms (CGHs) through an improved GS algorithm was used to perform the beam steering and wavelength switching. A variety of wavelength switching scenarios has been experimentally evaluated. The measurement results showed an average insertion loss of around -12.5 dB, and the calculated crosstalks were all less than -28 dB. Its applications in digital data transmissions were evaluated to achieve a transmission speed larger than 2.5 Gbps. The eye diagram measurement results showed that most wavelength switching scenarios have nearly bit-error-free transmission. The scenario includes the multicasting with spectral equalization within the proposed asymmetrical switching architecture.

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Reconfigurable free-space optical cores for storage area networks

Cited by 18 publications

References 10 publications

Design and Performance Evaluation of Optical Ethernet Switching Architecture with Liquid Crystal on Silicon-Based Beam-Steering Technology

Design and Performance Evaluation of Optical Ethernet Switching Architecture with Liquid Crystal on Silicon-Based Beam-Steering Technology

Reconfigurable free-space optical switching technologies for storage area networks

Asymmetric Optical Wavelength Switch Based on LCoS-SLM for Edge Node of Optical Access Network

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