MEMS mirror with slot structures suitable for flexible-grid WSS

Sorimoto, Keisuke; Kawashima, Hitoshi; Mori, Masahiko; Hasama, Toshifumi; Ishikawa, Hiroshi; Tsuda, Hitoshi; Uetsuka, Hiroshi

doi:10.1587/elex.10.20120924

Cited by 6 publications

(1 citation statement)

References 8 publications

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“…They each have their own advantages and problems. Waveguide type WSS [3][4] [5] [6] is difficult to increase the number of ports and channels due to losses of an arrayed waveguide grating (AWG) and a waveguide crossing, and free-space optical type WSS [7][8] has a low switching speed of milliseconds where switching is performed by MEMS or LCOS.…”

Section: Introductionmentioning

confidence: 99%

Design of a 16-channels 2×2 hybrid type wavelength selective crossconnect utilizing a silicon optical switch array

Moriya,

Tsuda,

Chen

et al. 2024

Optical Interconnects XXIV

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The wavelength selective crossconnect (WXC) is a key component of the reconfigurable optical add/drop multiplexer (ROADM). Waveguide type WXC is difficult to increase the number of ports and channels, and free-space type WXC has a low switching speed of milliseconds. To solve these problems, we have proposed a hybrid type WXC. It has microsecond switching speed, where switching is performed by silicon optical circuit and wavelength division (de)multiplexing is performed by free-space optical system. In this paper, we designed the free-space optics and simulated the transmission spectra of a 16-channel 2×2 hybrid-type WXC using CodeV optical simulator.The thickness and the position of the microlens array to be attached to the silicon optical circuit has been designed. The angle of incidence on the grating coupler was 9 degrees, and the thickness of the lens was 0.53 mm. The center of the microlens array was offset by 60.1 μm from the center of the grating coupler. The distance between the lenses in the freespace optics was optimized for the x-z and y-z planes, respectively. The loss spectra with the light emitted from the grating coupler were simulated for each of the 16 channels. The loss at the center frequency of each channel varies from -0.89 dB to -2.87 dB. The loss can be reduced by optimizing the grating coupler design to be -0.89 dB to -0.91 dB.

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Section: Introductionmentioning

confidence: 99%

Design of a 16-channels 2×2 hybrid type wavelength selective crossconnect utilizing a silicon optical switch array

Moriya,

Tsuda,

Chen

et al. 2024

Optical Interconnects XXIV

Self Cite

View full text Add to dashboard Cite

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High-capacity strictly non-blocking optical switches based on new dual principle

Barabanova

Vytovtov

Vishnevsky

et al. 2021

J. Phys.: Conf. Ser.

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In this paper the new dual principle of designing high-capacity strictly non-blocking optical switches is presented for the first time. The new type of switches with decentralized control based on the dual principle has been developed for the first time too. In accordance with the scheme topology this type of switching system was called as the quasi-complete dual switch. It also is analysed the optical signals minimal transmission time that provide the non-blocking property of the new schemes. For the circuit and link complexity calculations the accurate analytical expressions are obtained for the first time. The numerical investigation shows that the proposed schemes significantly benefit in comparison with the well-known switches, for example, the crossbar and Clos schemes. The results of comparing of the dual switch and other types of self-routing switches throughput show an obvious advantage of the proposed scheme. It also is shown that the offered switch type can be considered as a perspective for high-capacity strictly non-blocking optical systems. Indeed, the strictly non-blocking property, the scalability, high throughput, and the decentralized control are the main advantages of offered switches.

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A wavefront control type compact silicon wavelength selective switch

Muramatsu

Tsuda

2015

2015 International Conference on Photonics in Switching (PS)

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MEMS mirror with slot structures suitable for flexible-grid WSS

Cited by 6 publications

References 8 publications

Design of a 16-channels 2×2 hybrid type wavelength selective crossconnect utilizing a silicon optical switch array

Design of a 16-channels 2×2 hybrid type wavelength selective crossconnect utilizing a silicon optical switch array

High-capacity strictly non-blocking optical switches based on new dual principle

A wavefront control type compact silicon wavelength selective switch

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