Waveguide polymer electro-optic modulator/switch
AssigneeElectronics and Telecommunications Research Institute
InventorsWol-Yon Hwang, Jang-Joo Kim
Life of this patent
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Abstract
An improved waveguide polymer electro-optic modulator/switch which is operated in a single mode and has an improved device characteristic compared to the optimized modulator/switch and is capable of enhancing a coupling efficiency with an optical fiber without an increase of the driving voltage, which includes a waveguide formed in one line, a signal electrode formed at an upped input side of the waveguide, to which signal electrode a signal voltage is applied as an upper electrode, and an absorption electrode formed at an upper portion of the waveguide for absorbing a higher order which are not easily absorbed by the signal electrode and for increasing a dissipation ratio.
Claims3
A waveguide polymer electro-optic modulator comprising:
- a semiconductor substrate on which a lower electrode, a lower cladding layer, a waveguide, an upper cladding layer and an upper electrode are formed, wherein
- the waveguide is formed in one line,
- a signal electrode is formed at an upper input side of the waveguide, to which signal electrode a signal voltage is applied as an upper electrode, and
- an absorption electrode is formed at an upper portion of the waveguide for absorbing a higher order of modes which are not easily absorbed by the signal electrode and for increasing a dissipation ratio.
A waveguide polymer electro-optic modulator comprising:
- a semiconductor substrate on which a lower electrode, a lower cladding layer, a waveguide, an upper cladding layer and an upper electrode are formed, wherein
- the waveguide is divided into two lines between an input side and an output signal,
- a signal electrode and a bias electrode are formed at an upper portion of the thusly divided lines, and
- an absorption electrode is formed in the thusly divided waveguides and at an output upper side of the waveguide for absorbing a higher order of modes which are not easily absorbed by the signal electrode and for increasing a dissipation ratio.
A waveguide polymer electro-optic modulator/switch, comprising:
- a semiconductor substrate on which a lower electrode, a lower cladding layer, a waveguide, an upper cladding layer and an upper electrode are formed, wherein
- the waveguide is divided into two lines,
- a signal electrode and a bias electrode are formed at an upper portion of the lines of each waveguide, and
- an absorption electrode is formed at the output side of the waveguide for absorbing a higher order of modes which are not easily absorbed by the signal electrode and for increasing a dissipation ratio.
Dependencies are inferred from the claim text.