Demonstration of a low-cost cascade tunable semiconductor DFB laser

Author

Lianyan Li ; Baoli Cao ; Xiangfei Chen

Author_Institution

Nat. Lab. of Microstructures, Nanjing Univ., Nanjing, China

fYear

2014

fDate

9-10 Nov. 2014

Firstpage

1

Lastpage

4

Abstract

A low-cost cascade tunable semiconductor distributed feedback (DFB) laser is proposed based on the reconstruction equivalent chirp (REC) technique and experimentally demonstrated for the first time. It covers 9nm continuous tuning range by changing the temperature. The side mode suppression ratios are above 42dB over the tuning range. The current and temperature coefficients of wavelength tuning are 0.0124nm/mA and 0.0875nm/°C, respectively. The grating is fabricated by holographic exposure and conventional lithography, so the cost is very low. The results indicate that REC technique is promising to fabricate tunable DFB lasers which can meet the requirement of access networks. The tuning range can also be extended by using more sections.

Keywords

diffraction gratings; distributed feedback lasers; laser tuning; optical fabrication; semiconductor lasers; access networks; continuous tuning range; current coefficient; distributed feedback laser; grating fabrication; holographic exposure; low-cost cascade tunable semiconductor DFB laser; reconstruction equivalent chirp technique; side mode suppression ratios; temperature coefficient; wavelength tuning; Distributed feedback devices; Gratings; Laser tuning; Quantum cascade lasers; Waveguide lasers; distributed feedback (DFB) lasers; semiconductor lasers; tunable lasers;

fLanguage

English

Publisher

ieee

Conference_Titel

Optical Communications and Networks (ICOCN), 2014 13th International Conference on

Conference_Location

Suzhou

Type

conf

DOI

10.1109/ICOCN.2014.6987065

Filename

6987065