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公开(公告)号：US20200161827A1
公开(公告)日：2020-05-21
申请号：US16749093
申请日：2020-01-22
Applicant: Go!Foton Holdings, Inc.
Inventor： Feng Tian , Chi Kong Paul Ng
IPC: H01S5/024 , H04B10/69 , H04B10/572 , H04B10/50 , H04B10/40 , G05D23/24 , G02B5/28 , G02B5/20 , H01L25/16 , H01S5/0687 , G02B26/00 , H04B10/272 , H04J14/02
Abstract: The present disclosure is directed to an optical device including at least one temperature-dependent tunable element for controlling a wavelength of an optical signal, a first temperature control circuit for controlling a temperature of a first region of the optical device; and a second temperature control circuit for controlling a temperature of a second region of the optical device. The second region may include a portion of the first region. The second region may be smaller than the first region. The tunable element may be positioned in the second region such that a temperature of the tunable element is controlled based on the second temperature control circuit controlling the temperature of the second region. The tunable element may be one of (i) a laser for transmitting an outgoing optical signal and (ii) an optical filter coupled to a photodetector for receiving an incoming optical signal.
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Patent Agency Ranking
公开(公告)号：US20180337736A1
公开(公告)日：2018-11-22
申请号：US15978295
申请日：2018-05-14
Applicant: Go!Foton Holdings, Inc.
Inventor： Feng Tian , Chi Kong Paul Ng
Abstract: The present disclosure is directed to an optical device including at least one temperature-dependent tunable element for controlling a wavelength of an optical signal, a first temperature control circuit for controlling a temperature of a first region of the optical device; and a second temperature control circuit for controlling a temperature of a second region of the optical device. The second region may include a portion of the first region. The second region may be smaller than the first region. The tunable element may be positioned in the second region such that a temperature of the tunable element is controlled based on the second temperature control circuit controlling the temperature of the second region. The tunable element may be one of (i) a laser for transmitting an outgoing optical signal and (ii) an optical filter coupled to a photodetector for receiving an incoming optical signal.
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公开(公告)号：US10566762B2
公开(公告)日：2020-02-18
申请号：US15978295
申请日：2018-05-14
Applicant: Go!Foton Holdings, Inc.
Inventor： Feng Tian , Chi Kong Paul Ng
IPC: H04B10/572 , H01S5/024 , H01L25/16 , G02B5/20 , G02B5/28 , G05D23/24 , H04B10/40 , H04B10/50 , H04B10/69 , H01S5/06
Abstract: The present disclosure is directed to an optical device including at least one temperature-dependent tunable element for controlling a wavelength of an optical signal, a first temperature control circuit for controlling a temperature of a first region of the optical device; and a second temperature control circuit for controlling a temperature of a second region of the optical device. The second region may include a portion of the first region. The second region may be smaller than the first region. The tunable element may be positioned in the second region such that a temperature of the tunable element is controlled based on the second temperature control circuit controlling the temperature of the second region. The tunable element may be one of (i) a laser for transmitting an outgoing optical signal and (ii) an optical filter coupled to a photodetector for receiving an incoming optical signal.
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公开(公告)号：US20180337512A1
公开(公告)日：2018-11-22
申请号：US15978448
申请日：2018-05-14
Applicant: Go!Foton Holdings, Inc.
Inventor： Feng Tian , Chi Kong Paul Ng
Abstract: The present disclosure is directed to an optical device including at least one temperature-dependent tunable element for controlling a wavelength of an optical signal, a first sensor configured to indirectly monitor the optical signal, a second sensor configured to directly monitor the optical signal, and a control circuit. The tunable element may be one of (i) a laser for transmitting an outgoing optical signal and (ii) an optical filter coupled to a photodetector for receiving an incoming optical signal. The control circuit may be configured to receive first and second inputs from the first and second sensors, respectively, adjust the tuned wavelength of the tunable element from a first preselected wavelength to a second preselected wavelength based on the first input received from the first sensor, and maintain the tunable element at the second preselected frequency based on the second input received from the second sensor.
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公开(公告)号：US11223183B2
公开(公告)日：2022-01-11
申请号：US16749093
申请日：2020-01-22
Applicant: Go!Foton Holdings, Inc.
Inventor： Feng Tian , Chi Kong Paul Ng
IPC: H04B10/572 , H01S5/024 , H01L25/16 , G02B5/20 , H04J14/02 , H04B10/272 , G02B26/00 , H01S5/0687 , G02B5/28 , G05D23/24 , H04B10/40 , H04B10/50 , H04B10/69 , H01S5/06 , H01S5/068
Abstract: The present disclosure is directed to an optical device including at least one temperature-dependent tunable element for controlling a wavelength of an optical signal, a first temperature control circuit for controlling a temperature of a first region of the optical device; and a second temperature control circuit for controlling a temperature of a second region of the optical device. The second region may include a portion of the first region. The second region may be smaller than the first region. The tunable element may be positioned in the second region such that a temperature of the tunable element is controlled based on the second temperature control circuit controlling the temperature of the second region. The tunable element may be one of (i) a laser for transmitting an outgoing optical signal and (ii) an optical filter coupled to a photodetector for receiving an incoming optical signal.
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公开(公告)号：US10775563B2
公开(公告)日：2020-09-15
申请号：US16491729
申请日：2018-03-06
Inventor： Haiyuan Li , Feng Tian , Zhiyong Jiang , Chi Kong Paul Ng
IPC: G02B6/293 , H01S5/042 , H01S5/06 , H01S5/0687 , H01S5/0683 , H01S5/024
Abstract: 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 (6) to be rapidly stabilized at a target temperature through a closed loop control of hardware PID (8); allowing the shut-off depth control circuit (11) to operate when a burst driver (5) that drives a light emitting assembly (3) is standby or operating, providing an input to the light emitting assembly (3) through the shut-off depth control circuit (11) so that the light-emitting assembly (3) can emit the light that does not affect the normal operations of other ONU, the light emitted allows the light emitting assembly (3) to be warmed up, which enables the light emitting assembly (3) 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.
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