Patent ID: 7564882
Filing Date: 2009-07-21
Classification: H01S

Abstract:
1. An integrated circuit for providing burn-in current to a laser diode, the integrated circuit comprising: a laser driver having an output for connection to the laser diode; burn-in circuitry formed on said integrated circuit, said burn-in circuitry configured for generating a burn-in current; a first switch formed on said integrated circuit, said first switch operative to couple said burn-in current directly to the laser diode in response to a first enable signal provided to said integrated circuit and further operative to directly decouple said burn-in circuit from the laser diode in response to a second enable signal provided to said integrated circuit; and a second switch formed on said integrated circuit, said second switch operative to enable said burn-in circuit for generation of said burn-in current in response to said first enable signal, and further operative to disable said burn-in circuit for disabling generation of said burn-in current in response to said second enable signal.