High‐efficiency single etch step apodized surface grating coupler using subwavelength structure. Issue 6 (13th October 2014)

• Record Type: Journal Article
• Authors: Benedikovic, Daniel; Cheben, Pavel; Schmid, Jens H.; Xu, Dan‐Xia; Lapointe, Jean; Wang, Shurui; Halir, Robert; Ortega‐Moñux, Alejandro; Janz, Siegfried; Dado, Milan
• Is Part Of: Laser & photonics reviews. Volume 8:Issue 6(2014:Nov.)
• Page Start: L93
• Page End: L97
• Publication Date: 2014-10-13
• Subjects: Lasers -- Periodicals; Photonics -- Periodicals; Lasers -- Périodiques; Photonique -- Périodiques; 621.36
• DOI: 10.1002/lpor.201400113
• Languages: English
• ISSNs: 1863-8880

Abstract

<abstract abstract-type="graphical" xml:lang="en" id="lpor201400113-abs-0001"> <title> <x xml:space="preserve">Abstract</x> </title> <p>It is experimentally demonstrated that a high coupling efficiency can be achieved for an arbitrary buried oxide thickness by judicious adjustment of the grating radiation angle. The measured coupling loss of a continuously apodized single etch step grating coupler is −2.16 dB with 3 dB bandwidth of 64 nm. It is also shown by simulations that coupling loss as low as −0.42 dB is predicted for a modified coupler structure with bottom mirror. <boxed-text content-type="graphic" position="anchor" orientation="portrait"><graphic position="anchor" mimetype="image" xlink:href="ark:/27927/pgh2ck8z3t3" orientation="portrait" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink" /></boxed-text></p> </abstract>