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Based on the stability theory of switched control system, the stability problem of high-order linear system is researched and a stability approach based on switched control is proposed for high-order linear system. After decoupling high-order linear system, the instability part of linear system is controlled by switched control system, thus the stability problem is solved for a sort of unstable high-order...
A novel tunable external cavity laser based on liquid crystal subwavelength resonant grating filter is demonstrated with 7 nm tuning range and over 30 dB side mode suppression ratio. It also exhibits easy assembly, high output power, and good stability.
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