Abstract
An effective method for millimeter-wave (mmW) carrier generation from a dual-transverse-mode microsquare laser is experimentally demonstrated. By directly modulating the dual-mode microsquare laser at 6.7GHz, multiple sidebands are generated due to enhanced modulation nonlinearity, and the lasing modes with an interval of 40GHz are phase-locked. MmW carriers up to 47GHz, corresponding to seven times that of the modulation frequency, are achieved with a linewidth below 10Hz. The single-sideband phase noises of the signals keep the same level after transmission over 2.5km of optical fiber.
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