Design of distributed feedback cavity with controllable angular emission - Details

Author：

Zhai, Tianrui (Zhai, Tianrui.) (Scholars：翟天瑞) | Zhang, Xinping (Zhang, Xinping.) (Scholars：张新平) | Pang, Zhaoguang (Pang, Zhaoguang.) | Liu, Hongmei (Liu, Hongmei.) | Wang, Baozeng (Wang, Baozeng.)

Indexed by：

EI Scopus CSCD

Abstract：

The　angular　emission　spectra　of　the　distributed　feedback　(DFB)　cavity　are　investigated　theoretically　and　experimentally.　An　angular　emission　model　of　the　relationship　between　the　DFB　cavity　and　its　angular　emission　spectra　is　proposed.　In　the　model,　the　DFB　cavity　can　be　decomposed　into　two　parts:　a　grating　and　an　active　waveguide　layer.　So,　the　angular　emission　spectra　of　the　DFB　cavity　are　mainly　determined　by　the　period　of　the　grating,　the　thickness　of　the　waveguide　and　the　material　absorption　during　the　feedback　process.　The　theoretical　model　agrees　well　with　the　experimental　results.　It　provides　a　convenient　estimate　for　designing　more　efficient　DFB　polymer　lasers　and　highly　directional　emission　devices.　©　2012　Chinese　Optics　Letters.

Keyword：

Feedback Waveguides Emission spectroscopy

Author Community：

[ 1 ] [Zhai, Tianrui]Institute of Information Photonics Technology and College of Applied Sciences, Beijing University of Technology, Beijing 100124, China
[ 2 ] [Zhang, Xinping]Institute of Information Photonics Technology and College of Applied Sciences, Beijing University of Technology, Beijing 100124, China
[ 3 ] [Pang, Zhaoguang]Institute of Information Photonics Technology and College of Applied Sciences, Beijing University of Technology, Beijing 100124, China
[ 4 ] [Liu, Hongmei]Institute of Information Photonics Technology and College of Applied Sciences, Beijing University of Technology, Beijing 100124, China
[ 5 ] [Wang, Baozeng]Institute of Information Photonics Technology and College of Applied Sciences, Beijing University of Technology, Beijing 100124, China