Monolithic waveguide/MEMS switch
First Claim
1. A method for fabricating an optical device on a single substrate, comprising the steps of:
- forming at least one waveguide in a waveguide portion of said single substrate; and
forming a mirror portion on said single substrate with said waveguide portion, wherein said formation of said mirror portion is at least partly performed during said formation of said at least one waveguide, and is performed so as to produce at least one mirror which is moveable parallel to a plane of said at least one waveguide.
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Abstract
A monolithic waveguide/MEMS switch is disclosed that has a waveguide portion and a MEMS mirror portion fabricated on a single substrate, such as a as a silicon-on-insulator wafer. The monolithic waveguide/MEMS switch adjusts the phase of an optical signal by varying the position of one or more moveable mirrors. The mirror portion includes a mirror having a reflective surface that is attached to at least one MEMS actuator to achieve in-plane motion of the mirror (moves parallel to a plane of said at least one waveguide). In one implementation, the MEMS actuator is embodied as a known comb drive actuator. The phase adjustment techniques of the present invention may be employed in various optical devices, including wavelength selective optical switches that support multiple optical channels.
20 Citations
11 Claims
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1. A method for fabricating an optical device on a single substrate, comprising the steps of:
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forming at least one waveguide in a waveguide portion of said single substrate; and forming a mirror portion on said single substrate with said waveguide portion, wherein said formation of said mirror portion is at least partly performed during said formation of said at least one waveguide, and is performed so as to produce at least one mirror which is moveable parallel to a plane of said at least one waveguide. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification