Switching matrix configuration for reducing loss
AssigneeIntegrated Optics Communications Corp.
InventorsJianjun Zhang, Peiching Ling, Jinliang Chen, Ming Xu
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Abstract
The present invention discloses a switching matrix configuration to reduce the optical propagation losses and coupling losses. The switching matrix comprises M horizontal waveguides interested with 2N vertical waveguides, where M and N are positive integers and the optical switching system is configured to receive a multiplexed input optical signal from a horizontal waveguide disposed next to an i-th horizontal waveguide where i is a closest integer to a positive real number M/2.
Claims12
A wavelength-selective optical switching system comprising:
- M horizontal waveguides intersected with 2N vertical waveguides, where M and N are positive integers, and wherein j-th waveguide extending in a first vertical direction and (j+1)-th vertical waveguide extending in a second vertical direction where j=1, 2, 3, . . . , N, and said optical switching system is configured to receive an input multiplexed input optical signal from a horizontal bus waveguide disposed next to an i-th horizontal waveguide where i is a closest integer to a positive real number M/2;
- and
- a plurality of wavelength selective bridge-waveguides each disposed on an intersection and coupled between said horizontal and vertical waveguides wherein each of said wavelength selective bridge-waveguides comprising a plurality Bragg gratings for selectively transmitting an optical signal with a central wavelength within a spectral range and particular to said Bragg gratings from said bus waveguide to each of said wavelength-selective bridge waveguides.
A wavelength-selective optical switching system comprising:
- a plurality of first-direction waveguides intersected with a plurality of second-direction waveguides wherein said optical switching system is configured to receive a multiplexed input optical signal from a first-direction bus waveguide disposed substantially at a middle portion of said optical switching system along said first-waveguide direction;
- and
- a plurality of wavelength selective bridge-waveguides each disposed on an intersection and coupled between said first-direction waveguides and said second-direction waveguides wherein each of said wavelength selective bridge-waveguides comprising a plurality Bragg gratings for selectively transmitting an optical signal with a central wavelength within a spectral range and particular to said Bragg gratings from said bus waveguide to each of said wavelength-selective bridge waveguides.
A method for configuring a wavelength-selective optical switching system comprising:
- configuring a plurality of first-direction waveguides to intersect with a plurality of second-direction waveguides and receiving an input multiplexed input optical signal from a first-direction bus waveguide disposed substantially at a middle portion of said optical switching system along said first-waveguide direction;
- and
- disposing a plurality of wavelength selective bridge-waveguides on each intersection comprising a plurality of Bragg gratings to couple between each of said first-direction waveguides and each of said second-direction waveguides and disposing for selectively transmitting an optical signal with a central wavelength within a spectral range and particular to said Bragg gratings from said bus waveguide to each of said wavelength-selective bridge waveguides.
Dependencies are inferred from the claim text.