Low-loss chalcogenide waveguides on lithium niobate for the mid-infrared

Xin Xia; Qi Chen; Candice Tsay; Craig B. Arnold; Christi K. Madsen

doi:10.1364/OL.35.003228

Low-loss chalcogenide waveguides on lithium niobate for the mid-infrared

Xin Xia, Qi Chen, Candice Tsay, Craig B. Arnold, Christi K. Madsen

Research output: Contribution to journal › Article › peer-review

44 Scopus citations

Abstract

We demonstrate low-loss chalcogenide (As₂S₃) waveguides on a LiNbO₃ substrate for the mid-IR wavelength (4:8 μm). Designed for single-mode propagation, they are fabricated through photolithography and dry-etching technology and characterized on a mid-IR measurement setup with a quantum cascade laser. For straight waveguides, propagation loss as low as 0:33 dB=cm is measured and low-loss bends on the order of 100 μm are simulated, with measurement results showing <3 dB for a 250 μm bend radius. The coupling efficiency is estimated to be 81%. In addition, the influences of variations in width and bend radius are also investigated.

Original language	English (US)
Pages (from-to)	3228-3230
Number of pages	3
Journal	Optics Letters
Volume	35
Issue number	19
DOIs	https://doi.org/10.1364/OL.35.003228
State	Published - Oct 1 2010

All Science Journal Classification (ASJC) codes

Atomic and Molecular Physics, and Optics

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abstract = "We demonstrate low-loss chalcogenide (As2S3) waveguides on a LiNbO3 substrate for the mid-IR wavelength (4:8 μm). Designed for single-mode propagation, they are fabricated through photolithography and dry-etching technology and characterized on a mid-IR measurement setup with a quantum cascade laser. For straight waveguides, propagation loss as low as 0:33 dB=cm is measured and low-loss bends on the order of 100 μm are simulated, with measurement results showing <3 dB for a 250 μm bend radius. The coupling efficiency is estimated to be 81%. In addition, the influences of variations in width and bend radius are also investigated.",

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T1 - Low-loss chalcogenide waveguides on lithium niobate for the mid-infrared

AU - Xia, Xin

AU - Chen, Qi

AU - Tsay, Candice

AU - Arnold, Craig B.

AU - Madsen, Christi K.

PY - 2010/10/1

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N2 - We demonstrate low-loss chalcogenide (As2S3) waveguides on a LiNbO3 substrate for the mid-IR wavelength (4:8 μm). Designed for single-mode propagation, they are fabricated through photolithography and dry-etching technology and characterized on a mid-IR measurement setup with a quantum cascade laser. For straight waveguides, propagation loss as low as 0:33 dB=cm is measured and low-loss bends on the order of 100 μm are simulated, with measurement results showing <3 dB for a 250 μm bend radius. The coupling efficiency is estimated to be 81%. In addition, the influences of variations in width and bend radius are also investigated.

AB - We demonstrate low-loss chalcogenide (As2S3) waveguides on a LiNbO3 substrate for the mid-IR wavelength (4:8 μm). Designed for single-mode propagation, they are fabricated through photolithography and dry-etching technology and characterized on a mid-IR measurement setup with a quantum cascade laser. For straight waveguides, propagation loss as low as 0:33 dB=cm is measured and low-loss bends on the order of 100 μm are simulated, with measurement results showing <3 dB for a 250 μm bend radius. The coupling efficiency is estimated to be 81%. In addition, the influences of variations in width and bend radius are also investigated.

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Low-loss chalcogenide waveguides on lithium niobate for the mid-infrared

Abstract

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