TY - GEN
T1 - Narrow-linewidth laser diode with compact optical-feedback system
AU - Aoyama, K.
AU - Yoshioka, R.
AU - Yokota, N.
AU - Yasaka, H.
AU - Kobayashi, W.
PY - 2014/12/19
Y1 - 2014/12/19
N2 - A compact narrow-linewidth semiconductor laser source is demonstrated. Spectral linewidth of a single-mode laser diode (LD) utilized as this source can be reduced significantly by using a compact optical negative feedback system, which requires only two optical components, namely a lens and an optical filter. Our numerical analysis predicts that the spectral linewidth of LDs can be reduced by 40 dB by the proposed compact and simple optical negative feedback system. A proof-of-concept experiment confirms that the proposed system reduces the linewidth of a distributed-feedback laser from 6.4 MHz to 6.5 kHz (i.e., a reduction ratio of 30 dB). The proposed light source can be formed as a compact integrated light source by integrating a waveguide-type optical filter with a LD.
AB - A compact narrow-linewidth semiconductor laser source is demonstrated. Spectral linewidth of a single-mode laser diode (LD) utilized as this source can be reduced significantly by using a compact optical negative feedback system, which requires only two optical components, namely a lens and an optical filter. Our numerical analysis predicts that the spectral linewidth of LDs can be reduced by 40 dB by the proposed compact and simple optical negative feedback system. A proof-of-concept experiment confirms that the proposed system reduces the linewidth of a distributed-feedback laser from 6.4 MHz to 6.5 kHz (i.e., a reduction ratio of 30 dB). The proposed light source can be formed as a compact integrated light source by integrating a waveguide-type optical filter with a LD.
KW - Fabry-Perot etalon
KW - Laser diode
KW - optical negative feedback
KW - spectral linewidth
UR - http://www.scopus.com/inward/record.url?scp=84928007892&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84928007892&partnerID=8YFLogxK
U2 - 10.1109/MWP.2014.6994495
DO - 10.1109/MWP.2014.6994495
M3 - Conference contribution
AN - SCOPUS:84928007892
T3 - 2014 International Topical Meeting on Microwave Photonics / the 9th Asia-Pacific Microwave Photonics Conference, MWP/APMP 2014 - Proceedings
SP - 79
EP - 81
BT - 2014 International Topical Meeting on Microwave Photonics / the 9th Asia-Pacific Microwave Photonics Conference, MWP/APMP 2014 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2014 International Topical Meeting on Microwave Photonics, MWP 2014 and the 9th Asia-Pacific Microwave Photonics Conference, APMP 2014
Y2 - 20 October 2014 through 23 October 2014
ER -