| 摘要 |
<p>PURPOSE:To obtain a stable light waveform of an optical fiber, and realize long distance transmission, by reducing the GND potential change on a Peltier element and the fluctuation of oscillation wavelength of a semiconductor laser which is caused by the GND potential change. CONSTITUTION:In the driving equipment of a light emitting equipment having an optical modulator, an insulating part member 3 is arranged on a temperature control element 2, a light emitting equipment 4 having an optical modulator is arranged on the part member 3, a first electrode 5 formed on a light emitting part 4a of the light emitting equipment 4 is connected with a second electrode 6 formed on the part member 3 through first wiring 7, the second electrode 6 on the part member 3 is connected with a DC bias terminal 8 through second wiring 9, and a lower electrode 10 of the light emitting equipment 4 is connected with an earth part member 11 through third wiring 12. A resistive element 16 is connected in series with a third electrode 13 formed on an optical modulation part 4b of the light emitting equipment 4 having the optical modulator.</p> |
