Thermal Characteristics Analysis And Measurement Of Tunable Semiconductor Lasers And Optical Routers

The thermal problem of semiconductor tunable lasers has been the focuses of attention. Especially in recent years, the design of semiconductor lasers have a trend of smaller packaging, resulting in the increase of heat density, and thus propose new requirements of the thermal design of chip and packaging. Reasonable control of heating characteristics of tunable semiconductor laser can have an impact on the laser wavelength quasi-continuous tuning. In this dissertation, research about the device heating characteristics and related applications are as follows:A simple algorithm of the quasi-continuous tuning of double ring-FP laser is proposed. A 24.4nm quasi-continuous tuning range with over 30dB side mode suppression ratio is obtained by controlling the electrode injection current and TEC temperature.Finite element thermal models of the V-cavity laser and the 16x16 optical router are established by COMSOL. Steady and transient heat transfer characteristics of the V-cavity laser with TOSA package are analyzed. The junction temperature of the laser is tested by the forward bias voltage method. The optimization design of heat dissipation of the photonic router chip was carried out, considering the selection of the TEC, the optimization of the carrier's heat dissipation structure and the selection of the materials of carrier and solder. Influences of duty cycle on the thermal crosstalk of wavelength converter arrays are discussed.