An optical switch based on an electrowetting prism coupled to a multimode fiber has demonstrated a large extinction ratio with speeds up to 300 Hz. Electrowetting prisms provide a transmissive, low power, and compact alternative to conventional free-space optical switches, with no moving parts. The electrowetting prism performs beam steering of ±3°with an extinction ratio of 47 dB between the ON and OFF states and has been experimentally demonstrated at scanning frequencies of 100â300 Hz. The optical design is modeled in Zemax to account for secondary rays created at each surface interface (without scattering). Simulations predict 50 dB of extinction, in good agreement with experiment.
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On-Chip Si3N4 Spatial Heterodyne Fourier Transform Spectrometer for the Optical Window in Biological Tissue
We designed and demonstrated an on-chip Fourier transform spectrometer on Si3N4-on-SiO2 using an array of Mach-Zehnder interferometers (MZIs) for đ = 600~1000 nm. The retrieval of an input spectrum is demonstrated by the interconnect simulation.
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- Award ID(s):
- 1932753
- PAR ID:
- 10346768
- Editor(s):
- Optica CLEO program Committee
- Date Published:
- Journal Name:
- Cleo
- ISSN:
- 0928-9062
- Format(s):
- Medium: X
- Sponsoring Org:
- National Science Foundation
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