Compact Wide-Band Wavelength Blocker Utilizing Novel Hybrid AWG-Free Space Focusing Optics

Ooba, Naoki; Suzuki, Kenya; Ishii, M.; Aratake, Atsushi; Shibata, Tomohiro; Mino, S.

doi:10.1109/ofc.2008.4528709

Cited by 7 publications

(1 citation statement)

References 3 publications

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“…Combining waveguide technology with free-space optics can provide a solution that is not achievable using either method individually. The use of an arrayed waveguide grating (AWG) in combination with a MEMS (microelectromechanical systems) mirror was first proposed in 2001 [5], and since then, several ideas including the use of a wavelength blocker [6,7], tunable optical dispersion filter [8][9][10][11][12][13], and WSS [14][15][16][17] have been reported.…”

Section: Introductionmentioning

confidence: 99%

Spatial and Planar Optical Circuit (SPOC) Technology and Its Application to Photonic Network Devices

Ishii,

Ikuma,

Shikama

et al. 2016

NTT Technical Review

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Because photonic networks have evolved from point-to-point systems to ring or mesh networks, higher scalability is required in the devices used in optical nodes. Hybridization of waveguide and freespace optics or spatial and planar optical circuits (SPOCs) may provide the necessary solutions to meet this requirement. A SPOC platform is attractive because it can take advantage of both waveguide technology and free-space optics. Waveguide technology provides a high degree of integration of optical functionality for such devices as splitters and non-wavelength selective switches, while free-space optics supplies a high degree of parallelism with two-dimensional spatial light modulators such as liquid crystal on silicon (LCOS) devices. In this article, we summarize the basics of SPOC technology and review its application to reconfigurable optical add/drop multiplexing (ROADM) devices. The key element of a waveguide on a SPOC platform is the spatial beam transformer, which has the same circuit structure as an arrayed waveguide grating but functions as a microlens array and provides attractive features such as dense integration of switches. An LCOS device has numerous phase modulating pixels, enabling flexible manipulation of lightwaves. We used a SPOC platform to construct and demonstrate several types of wavelength selective switches for ROADM applications.

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