Title :
High-speed optically controlled semiconductor light source with an external cavity
Author :
Mieda, Satoshi ; Shiratori, S. ; Yokota, Nobuhide ; Yasaka, Hiroshi ; Kobayashi, Wataru
Author_Institution :
Res. Inst. of Electr. Commun., Tohoku Univ. Sendai, Sendai, Japan
Abstract :
An optically controlled semiconductor laser with broad 3-dB bandwidth is achieved by introducing a phase- and intensity-controllable external cavity into a DFB laser. The external cavity functions as a passive-feedback section for the semiconductor laser. The optimum structure of an optically controlled passive-feedback laser (OC-PFL) for widening the 3-dB bandwidth of the laser is numerically analyzed. A broad 3-dB bandwidth of up to 40 GHz is experimentally confirmed by using a fabricated OC-PFL with a structure designed on the basis of the analysis results. It is also experimentally confirmed that it is possible to achieve 3-dB bandwidth of more than 50 GHz.
Keywords :
distributed feedback lasers; laser beams; laser cavity resonators; light sources; optical control; optical variables control; phase control; semiconductor lasers; DFB laser; OC-PFL; bandwidth 40 GHz; broad bandwidth; external cavity functions; high-speed optically controlled semiconductor light source; intensity-controllable external cavity; laser bandwidth; optically controlled passive-feedback laser; optically controlled semiconductor laser; optimum structure; passive-feedback section; phase-controllable external cavity; Bandwidth; Laser feedback; Modulation; Optical device fabrication; Optical feedback; Photonics; Semiconductor lasers; optical control; passive feedback laser; photonphoton resonance;
Conference_Titel :
Microwave Photonics (MWP) and the 2014 9th Asia-Pacific Microwave Photonics Conference (APMP), 2014 International Topical Meeting on
Conference_Location :
Sapporo
DOI :
10.1109/MWP.2014.6994507
