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Spectra of the Semiconductor Lasers subjected to Optical Feedback

This research investigated the spectra of two different semiconductor lasers subjected to optical feedback. For the vertical
-cavity surface-emitting laser (VCSEL),a wavelength selective element (Etalon) was used to feedback one of the transverse modes into the laser cavity. The experimental results showed that the multi-transverse modes could be suppressed to yield the fundamental mode output or a higher-order transverse mode output, in which the side-mode suppression ratio (SMSR) where 14.8 dB and 6.4 dB respectively. For the external cavity AR-coated laser, we studied the feasibility of generating mode-locking pulses by the temporal modulation of orthogonal-polarization optical feedback (OPF). The RF spectrum analyzer was employed to analyze the interaction. The observation clearly presented the spectra of mode- locking-like pulses in the laser¡¦s output.

Identiferoai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0704106-154030
Date04 July 2006
CreatorsWang, Li-Ting
ContributorsDer-Jun Jang, Chie-Tong Kuo, Tsu-Chiang Yen
PublisherNSYSU
Source SetsNSYSU Electronic Thesis and Dissertation Archive
LanguageCholon
Detected LanguageEnglish
Typetext
Formatapplication/pdf
Sourcehttp://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0704106-154030
Rightsrestricted, Copyright information available at source archive

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