Go!foton Holdings, Inc.

Fiberxon, Inc.

Chengdu Superxon Communication Technology Co., Ltd.

Zhiyong Jiang

Feng Tian

Yuanjun Huang

Chi Kong Paul Ng

Zhong Yang

Chao Zhang

Jun Cao

Haiyuan Li

Xuefei Zeng

The present invention provides a wavelength control method, a system thereof and a shutoff depth control circuit. The method includes: enabling a current temperature of TEC () to be rapidly stabilized at a target temperature through a closed loop control of hardware PID (); allowing the shut-off depth control circuit () to operate when a burst driver () that drives a light emitting assembly () is standby or operating, providing an input to the light emitting assembly () through the shut-off depth control circuit () so that the light-emitting assembly () can emit the light that does not affect the normal operations of other ONU, the light emitted allows the light emitting assembly () to be warmed up, which enables the light emitting assembly () to quickly stabilize the emitted light within the bandwidth required by each channel of the system during the time period from a non-light emitting state to a light emitting state.

TWDM ONU wavelength control method, system thereof and shut- off depth control circuit

A system for measuring gains of a plurality of photo diodes includes a chamber adapted to host the plurality of photo diodes and a temperature control unit configured to control the temperature within the chamber to a predetermined temperature. A control unit selects at least one of the plurality of photo diodes. A hosting unit is configured to provide a bias voltage to the selected photo diode at the predetermined temperature. A light source transmits photo signals to the selected photo diode at the predetermined temperature. A measurement unit configured to measure current signals generated by the selected photo diode in response to the photo signals under the bias voltage at the predetermined temperature.

Apparatus for measuring photo diodes' temperature dependence

Growing community of inventors

Chengdu, China

Zhiyong Jiang