Abstract
A novel approach for wavelength sampling and stabilization of narrow-band light sources by means of a miniature integrated optical wavelength analyzer is presented. Obtaining spectral information by an optoelectronic feedback loop, wavelength tuning and stabilization are experimentally demonstrated by controlling the temperature and the operating current of a commercial low-cost edge-emitting laser diode and of an AlAs/AlGaAs vertical-cavity surface-emitting laser (VCSEL) and first results are reported. An accuracy better than 0.02 nm r.m.s. is achieved for temperature-controlled wavelength stabilization and an accuracy of better than 0.008 nm r.m.s. is obtained for current-controlled VCSELs over the case temperature range 11–29 °C.
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