16-wavelength gain-coupled DFB laser array with fine tunability. Li, G., Makino, T., Sarangan, A., & Huang, W. IEEE Photonics Technology Letters, 8(1):22-24, 1, 1996.
16-wavelength gain-coupled DFB laser array with fine tunability [pdf]Paper  16-wavelength gain-coupled DFB laser array with fine tunability [link]Website  abstract   bibtex   
16-wavelength semiconductor laser array with fine wavelength tunability is demonstrated, utilizing gain-coupled distributed feedback (DFB) lasers with different ridge waveguide widths. Besides the coarse tuning by the ridge widths, the fine post-fabrication tunability for individual lasers in the array is achieved with a Ti thin-film resistor integrated on the chip. Due to the gain-coupling effect, 16 singlemode lasing wavelengths around 1.55 μ in ∼1 nm spacing are obtained simultaneously. An effective fine-tuning up to 1 nm is observed at a moderate heating power of 100 mW.

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