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Authors: R. Todt, Th. Jacke, R. Meier, M-C Amann, R. Laroy, G. Morthier
Title: Wide wavelength tuning of sampled-grating tunable twin-guide laser diodes
Format: International Journal
Publication date: 11/2004
Journal/Conference/Book: Electronics Letters
Editor/Publisher: IEE, 
Volume(Issue): 40(23) p.1491 - 1492
DOI: 10.1049/el:20046997
Citations: 9 ( - last update: 16/6/2024)
7 (OpenCitations - last update: 3/5/2024)
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Tuning characteristics of widely tunable twin-guide (TTG) laser diodes with sampled gratings (SGs) are reported. Two SGs, providing slightly different reflection spectra, enable wide tunability by means of Vernier effect tuning. The device structure is vertically integrated and, hence, a DFB-like laser is obtained, which makes a phase tuning section unnecessary and facilitates easy and fast device characterisation. Although the tuning section can tune the SG reflection spectra by only ~ 2 nm, an overall tuning range of 28 nm has been achieved by employing Vernier effect tuning. Within the aforementioned tuning range, five supermodes are useable and can be continuously tuned without any mode-hops. The lasers operate at ~ 1.55 ┬Ám wavelength and achieve a maximum output power of 12 mW.

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