Abstract
This paper reports an electrically generated optical waveguide for the transversemagnetic wave. The waveguide is formed in a z-cut single-crystal lithium-niobate (LN) thin film by the electro-optic effect, where the extraordinary refractive index (RI) of the LN film is increased by a voltage applied to patterned electrodes that define the waveguide geometry. Such a waveguide can be made to exist or disappear by turning on or off the applied voltage. A straight waveguide and an S-bend waveguide with an RI contrast of ~0.004 are generated at a voltage of 200V. The propagation loss of the generated waveguide measured at the wavelength 532 nm is 1.8 dB/cm. Electrically generated optical waveguides could fulfill useful functions in photonic integrated circuits, such as reconfigurable cross connect and switching that require wavelength-independent and mode-independent operation.
Original language | English |
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Pages (from-to) | 29895-29903 |
Number of pages | 9 |
Journal | Optics Express |
Volume | 28 |
Issue number | 20 |
DOIs | |
Publication status | Published - 28 Sept 2020 |
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics