Optical module
AssigneesHisense Broadband Multimedia Technologies Co., Ltd., Hisense USA Corporation, Hisense International Co., Ltd.
InventorsQiang Zhang, Qisheng Zhao, Chenghao Jin
Life of this patent
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Abstract
An optical module includes: a first thermoelectric cooler (TEC) disposed at least partially inside a laser, a second TEC is disposed on a housing of the laser, and a micro control unit (MCU). The first TEC is configured to perform heating or cooling according to an enabling signal input by a MCU. The second TEC is configured to perform heating or cooling according to an enabling signal input by the MCU. The MCU is configured to determine whether to input an enabling signal or a disabling signal to the first TEC and the second TEC according to a size of operating current input by a drive circuit of a laser chip to the laser chip.
Claims20
An optical module, comprising:
- a micro control unit (MCU);
- a first thermoelectric cooler (TEC) drive circuit for controlling a first TEC disposed at least partially inside a laser housing, the first TEC drive circuit being configured to control the first TEC to perform heating or cooling when the first TEC drive circuit is enabled by a first enabling signal communicated by the MCU;
- and
- a second thermoelectric cooler (TEC) drive circuit for controlling a second TEC disposed on a laser housing, the second TEC drive circuit being configured to control the second TEC to perform heating or cooling when the second TEC drive circuit is enabled by a second enabling signal communicated by the MCU,
- wherein the MCU is configured to:
- determine an amount of current flowing into a drive circuit of a laser chip to thereby determine an operating current of the drive circuit of the laser chip;
- when the operating current is within a first current range, communicate the first enabling signal to the first TEC drive circuit to enable the first TEC drive circuit to control the first TEC;
- when the operating current is within a second current range, communicate the second enabling signal to the second TEC drive circuit to enable the second TEC drive circuit to control the second TEC.
A system, comprising:
- a laser disposed at least partially in a housing and configured to communicate with an optical network;
- a micro control unit (MCU);
- a first thermoelectric cooler (TEC) drive circuit for controlling a first (TEC) disposed at least partially inside the laser housing, the first TEC drive circuit being configured to control the first TEC to perform heating or cooling when the first TEC drive circuit is enabled by a first enabling signal communicated by the MCU;
- and
- a second thermoelectric cooler (TEC) drive circuit for controlling a second TEC disposed outside of the laser housing, the second TEC drive circuit being configured to control the second TEC to perform heating or cooling when the second TEC drive circuit is enabled by a second enabling signal communicated by the MCU;
- wherein the MCU is configured to:
- determine an amount of current flowing into a drive circuit of a laser chip to thereby determine an operating current of the drive circuit of the laser chip;
- when the operating current is within a first current range, communicate the first enabling signal to the first TEC drive circuit to enable the first TEC drive circuit to control the first TEC;
- when the operating current is within a second current range, communicate the second enabling signal to the second TEC drive circuit to enable the second TEC drive circuit to control the second TEC.
Dependencies are inferred from the claim text.