Vertically integrated As2S3 ring resonator on LiNbO3. Academic Article uri icon


  • Titanium-diffused lithium niobate (Ti:LiNbO3) waveguides are widely used in current fiber optic networks because of their high-speed, electro-optic modulation, and low-loss integration with standard single-mode fibers. However, they cannot achieve small ring resonators owing to their lack of a high core-to-cladding index contrast. To overcome this challenge, we vertically integrate an emerging chalcogenide glass waveguide technology on well-established Ti:LiNbO3 waveguides. We present, to our knowledge, the first arsenic trisulfide (As2S3) race-track ring resonator with a 290.8 m bend radius in an all-pass filter configuration, integrated on a Ti:LiNbO3 waveguide. Vertical coupling is achieved using a unique taper design. Experimental results are shown for 10.6% coupling, 2.08 dB roundtrip loss, and a 25.4 GHz free-spectral range. 2009 Optical Society of America.

published proceedings

  • Optics Letters

author list (cited authors)

  • Solmaz, M. E., Adams, D. B., Tan, W. C., Snider, W. T., & Madsen, C. K.

citation count

  • 30

complete list of authors

  • Solmaz, Mehmet E||Adams, Donald B||Tan, Wee C||Snider, William T||Madsen, Christi K

publication date

  • June 2009