Zinc indiffused PPLN ridge waveguides

Carpenter, Lewis Glynn, Berry, Sam, Field, James and Gawith, Corin (2018) Zinc indiffused PPLN ridge waveguides. SPIE Photonics West: "Fiber Lasers XV: Technology and Systems", The Moscone Center, San Francisco, United States. 27 Jan - 01 Feb 2018.

Record type: Conference or Workshop Item (Paper)

Abstract

We demonstrate zinc-indiffused PPLN ridge waveguides with insertion losses of 1.8 dB in 3.4 cm long devices with standard telecommunication fiber butt coupling. Low insertion losses are critical for enabling compact, high-efficiency 780 nm wavelength converted laser sources for space-based Rubidium atom cooling systems. Our low insertion losses are attributed to sub-nanometer waveguide sidewall surface roughness produced by ultra precision ductile mode dicing. Surface roughnesses of 0.29 nm have been measured, demonstrating an order of magnitude reduction compared to prior art. We will present our latest work on zinc-indiffused PPLN ridge waveguides and report on ultra precision ductile mode dicing for PPLN ridge waveguide fabrication.

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Published date: 30 January 2018

Venue - Dates: SPIE Photonics West: "Fiber Lasers XV: Technology and Systems", The Moscone Center, San Francisco, United States, 2018-01-27 - 2018-02-01

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