Design of low-energy on-chip electro-optical 1  ×  <italic>M</italic> wavelength-selective switches

Richard Soref

doi:doi:10.1364/PRJ.5.000340

Photonics Research, 2017, 5 (4): 04000340, Published Online: Oct. 10, 2018

Design of low-energy on-chip electro-optical 1 × M wavelength-selective switches

Richard Soref ^*

Author Affiliations

Department of Engineering, The University of Massachusetts at Boston, 100 Morrissey Boulevard, Boston, Massachusetts 02125, USA (Richard.Soref@umb.edu)

Figures & Tables

Fig. 1. Schematic diagram of proposed WSS employing an N-fold set of wavelength-dedicated 1×M equi-path switching trees.

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Fig. 2. Implementation of Fig. 1 utilizing inplane 1×3 and 3×1 arrayed-waveguide grating devices for the demux and mux sections.

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Fig. 3. Waveguide diagram of 1×4 tree utilizing dual-nanobeam MZIs as the 1×2 constituent switches.

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Fig. 4. Waveguide diagram of 1×4 tree utilizing MZI constituent 1×2 switches composed of a pair of three-waveguide couplers, each containing a central nanobeam.

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Fig. 5. Waveguide diagram of 1×4 tree using asymmetric contra-couplers as 1×2 elemental switches, each switch containing an offset dual-grating coupling region.

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Fig. 6. Overall spectral response of the switches in Figs. 3, 4, and 5 in the zero bias state (unshifted spectrum) and in the full-bias state (shifted spectrum).

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Fig. 7. Passive demultiplexing of a multiwavelength input stream using a sequence of dedicated-resonance 2×2 devices (the example of the Fig. 3 structure).

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Fig. 8. Proposed design of three-wavelength, four-output WSS utilizing Fig. 3 devices.

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Richard Soref. Design of low-energy on-chip electro-optical 1 × M wavelength-selective switches[J]. Photonics Research, 2017, 5(4): 04000340.

Design of low-energy on-chip electro-optical 1 × M wavelength-selective switches

Fig. 1. Schematic diagram of proposed WSS employing an N-fold set of wavelength-dedicated 1×M equi-path switching trees.

Fig. 2. Implementation of Fig. 1 utilizing inplane 1×3 and 3×1 arrayed-waveguide grating devices for the demux and mux sections.

Fig. 3. Waveguide diagram of 1×4 tree utilizing dual-nanobeam MZIs as the 1×2 constituent switches.

Fig. 4. Waveguide diagram of 1×4 tree utilizing MZI constituent 1×2 switches composed of a pair of three-waveguide couplers, each containing a central nanobeam.

Fig. 5. Waveguide diagram of 1×4 tree using asymmetric contra-couplers as 1×2 elemental switches, each switch containing an offset dual-grating coupling region.

Fig. 6. Overall spectral response of the switches in Figs. 3, 4, and 5 in the zero bias state (unshifted spectrum) and in the full-bias state (shifted spectrum).

Fig. 7. Passive demultiplexing of a multiwavelength input stream using a sequence of dedicated-resonance 2×2 devices (the example of the Fig. 3 structure).

Fig. 8. Proposed design of three-wavelength, four-output WSS utilizing Fig. 3 devices.

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Design of low-energy on-chip electro-optical 1 × M wavelength-selective switches

Fig. 1. Schematic diagram of proposed WSS employing an N-fold set of wavelength-dedicated 1×M equi-path switching trees.

Fig. 2. Implementation of Fig. 1 utilizing inplane 1×3 and 3×1 arrayed-waveguide grating devices for the demux and mux sections.

Fig. 3. Waveguide diagram of 1×4 tree utilizing dual-nanobeam MZIs as the 1×2 constituent switches.

Fig. 4. Waveguide diagram of 1×4 tree utilizing MZI constituent 1×2 switches composed of a pair of three-waveguide couplers, each containing a central nanobeam.

Fig. 5. Waveguide diagram of 1×4 tree using asymmetric contra-couplers as 1×2 elemental switches, each switch containing an offset dual-grating coupling region.

Fig. 6. Overall spectral response of the switches in Figs. 3, 4, and 5 in the zero bias state (unshifted spectrum) and in the full-bias state (shifted spectrum).

Fig. 7. Passive demultiplexing of a multiwavelength input stream using a sequence of dedicated-resonance 2×2 devices (the example of the Fig. 3 structure).

Fig. 8. Proposed design of three-wavelength, four-output WSS utilizing Fig. 3 devices.

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