Abstract: To autonomously apply a bias voltage to an optical modulator according to phase angle information provided from outside in a pluggable optical module. A pluggable electric connector (11) can communicate a communication data signal and a control signal with an optical communication apparatus (92). An optical signal output unit (13) includes a Mach-Zehnder type optical modulator including a phase modulation area and outputs an optical modulation signal (LS) modulated according to the communication data signal. An optical power control unit (14) can control optical power of the optical modulation signal (LS). A pluggable optical receptor (15) can output the optical modulation signal (LS) to an optical fiber (91). A control unit (12) controls a modulation operation of the optical signal output unit (13) and the bias voltage applied to the phase modulation area. The control unit (12) determines the bias voltage applied to the phase modulation area according to phase angle information of the control signal (CON1).

Abstract: A drive unit outputs a modulation signal based on a data signal input from an optical communication apparatus through a pluggable electric connector. An optical modulator outputs an optical signal generated by modulating a light output from a light source based on the modulation signal. A control unit controls a modulation operation of the optical modulator. The control unit outputs a driver signal instructing to start a setting operation to the optical communication apparatus. The optical communication apparatus monitors the modulation operation of the optical modulator in response to the driver signal and performs an operation of correcting the data signal and/or an operation of outputting a control signal representing a control setting for the modulation operation to the control unit based on a monitoring result. The control unit controls the modulation operation of the optical modulator based on the control signal when receiving the control signal.

Abstract: An optical sensing device includes a first point cloud data acquisition unit for acquiring first point cloud data associated with a first object and a second object that are included in a first region, a region specification unit for specifying a second region associated with the first object in the first region, a second point cloud data acquisition unit for acquiring second point cloud data associated with the first object by emitting second laser light from the light source to a plurality of second positions associated with the second region, based on second laser reflection light being reflection light of the second laser light, and a first abnormality detection unit for detecting abnormality of the first object, by using the second point cloud data.

Abstract: The purpose of the present invention is to provide an air current observation device by which it is possible to secure, with greater ease, a power source resource and a communication resource. An air current observation device (3) comprises: an air current detection means (21) by which an optical sensing device (2) installed on a tower-like structure (1) emits a laser beam to an aerial area surrounding the tower-like structure (1), and that, when the optical sensing device (2) receives reflected light from the laser beam, generates air current information pertaining to an air current in the aerial area on the basis of the laser beam and the reflected light; and an air current map generation means (22) that generates an air current map indicating the distribution of air current in the aerial area using the air current information.

Abstract: To autonomously apply a bias voltage to an optical modulator according to phase angle information provided from outside in a pluggable optical module. A pluggable electric connector (11) can communicate a communication data signal and a control signal with an optical communication apparatus (92). An optical signal output unit (13) includes a Mach-Zehnder type optical modulator including a phase modulation area and outputs an optical modulation signal (LS) modulated according to the communication data signal. An optical power control unit (14) can control optical power of the optical modulation signal (LS). A pluggable optical receptor (15) can output the optical modulation signal (LS) to an optical fiber (91). A control unit (12) controls a modulation operation of the optical signal output unit (13) and the bias voltage applied to the phase modulation area. The control unit (12) determines the bias voltage applied to the phase modulation area according to phase angle information of the control signal (CON1).

Abstract: In order to provide a vegetation observation device capable of stereographically observing the state of vegetation, this vegetation observation device is provided with: a vegetation model generation means for generating a vegetation model which is a three-dimensional model of a vegetation region, on the basis of laser reflected light generated when a laser beam to be applied to a light irradiation region including the vegetation region is reflected by vegetation in the vegetation region; and a vegetation observation means for observing vegetation in the vegetation region, on the basis of the vegetation model generated by the vegetation model generation means.

Abstract: To autonomously apply a bias voltage to an optical modulator according to phase angle information provided from outside in a pluggable optical module. A pluggable electric connector (11) can communicate a communication data signal and a control signal with an optical communication apparatus (92). An optical signal output unit (13) includes a Mach-Zehnder type optical modulator including a phase modulation area and outputs an optical modulation signal (LS) modulated according to the communication data signal. An optical power control unit (14) can control optical power of the optical modulation signal (LS). A pluggable optical receptor (15) can output the optical modulation signal (LS) to an optical fiber (91). A control unit (12) controls a modulation operation of the optical signal output unit (13) and the bias voltage applied to the phase modulation area. The control unit (12) determines the bias voltage applied to the phase modulation area according to phase angle information of the control signal (CON1).

Abstract: To autonomously apply a bias voltage to an optical modulator according to phase angle information provided from outside in a pluggable optical module. A pluggable electric connector (11) can communicate a communication data signal and a control signal with an optical communication apparatus (92). An optical signal output unit (13) includes a Mach-Zehnder type optical modulator including a phase modulation area and outputs an optical modulation signal (LS) modulated according to the communication data signal. An optical power control unit (14) can control optical power of the optical modulation signal (LS). A pluggable optical receptor (15) can output the optical modulation signal (LS) to an optical fiber (91). A control unit (12) controls a modulation operation of the optical signal output unit (13) and the bias voltage applied to the phase modulation area. The control unit (12) determines the bias voltage applied to the phase modulation area according to phase angle information of the control signal (CON1).

Abstract: A method for setting a pluggable optical transceiver, includes: amplifying, with an amplifier, an electrical signal being input to the pluggable optical transceiver from an external device to which the pluggable optical transceiver is mounted, and outputting the amplified electrical signal as a drive signal of an optical modulator; modulating light input from a light source with the optical modulator, based on the drive signal, and outputting the modulated light; monitoring amplitude of the drive signal; and executing a control sequence being set in advance for at least one of the amplifier and the optical modulator when detecting that amplitude of the drive signal exceeds a reference value being set in advance.

Abstract: A drive unit outputs a modulation signal based on a data signal input from an optical communication apparatus through a pluggable electric connector. An optical modulator outputs an optical signal generated by modulating a light output from a light source based on the modulation signal. A control unit controls a modulation operation of the optical modulator. The control unit outputs a driver signal instructing to start a setting operation to the optical communication apparatus. The optical communication apparatus monitors the modulation operation of the optical modulator in response to the driver signal and performs an operation of correcting the data signal and/or an operation of outputting a control signal representing a control setting for the modulation operation to the control unit based on a monitoring result. The control unit controls the modulation operation of the optical modulator based on the control signal when receiving the control signal.

Abstract: A drive unit outputs a modulation signal based on a data signal input from an optical communication apparatus through a pluggable electric connector. An optical modulator outputs an optical signal generated by modulating a light output from a light source based on the modulation signal. A control unit controls a modulation operation of the optical modulator. The control unit outputs a driver signal instructing to start a setting operation to the optical communication apparatus. The optical communication apparatus monitors the modulation operation of the optical modulator in response to the driver signal and performs an operation of correcting the data signal and/or an operation of outputting a control signal representing a control setting for the modulation operation to the control unit based on a monitoring result. The control unit controls the modulation operation of the optical modulator based on the control signal when receiving the control signal.

Abstract: A method for setting a pluggable optical transceiver, includes: amplifying, with an amplifier, an electrical signal being input to the pluggable optical transceiver from an external device to which the pluggable optical transceiver is mounted, and outputting the amplified electrical signal as a drive signal of an optical modulator; modulating light input from a light source with the optical modulator, based on the drive signal, and outputting the modulated light; monitoring amplitude of the drive signal; and executing a control sequence being set in advance for at least one of the amplifier and the optical modulator when detecting that amplitude of the drive signal exceeds a reference value being set in advance.

Abstract: A drive unit outputs a modulation signal based on a data signal input from an optical communication apparatus through a pluggable electric connector. An optical modulator outputs an optical signal generated by modulating a light output from a light source based on the modulation signal. A control unit controls a modulation operation of the optical modulator. The control unit outputs a driver signal instructing to start a setting operation to the optical communication apparatus. The optical communication apparatus monitors the modulation operation of the optical modulator in response to the driver signal and performs an operation of correcting the data signal and/or an operation of outputting a control signal representing a control setting for the modulation operation to the control unit based on a monitoring result. The control unit controls the modulation operation of the optical modulator based on the control signal when receiving the control signal.

Abstract: To autonomously apply a bias voltage to an optical modulator according to phase angle information provided from outside in a pluggable optical module. A pluggable electric connector (11) can communicate a communication data signal and a control signal with an optical communication apparatus (92). An optical signal output unit (13) includes a Mach-Zehnder type optical modulator including a phase modulation area and outputs an optical modulation signal (LS) modulated according to the communication data signal. An optical power control unit (14) can control optical power of the optical modulation signal (LS). A pluggable optical receptor (15) can output the optical modulation signal (LS) to an optical fiber (91). A control unit (12) controls a modulation operation of the optical signal output unit (13) and the bias voltage applied to the phase modulation area. The control unit (12) determines the bias voltage applied to the phase modulation area according to phase angle information of the control signal (CON1).

Abstract: A pluggable electric connector can communicate a communication data signal and a control signal with an optical communication apparatus. An optical signal output unit includes a Mach-Zehnder type optical modulator including a phase modulation area and outputs an optical modulation signal modulated according to the communication data signal. An optical power control unit can control optical power of the optical modulation signal. A pluggable optical receptor can output the optical modulation signal to an optical fiber. A control unit controls a modulation operation of the optical signal output unit and the bias voltage applied to the phase modulation area. The control unit determines the bias voltage applied to the phase modulation area according to phase angle information of the control signal. The optical signal output unit applies the bias voltage determined by the control unit to the phase modulation area.

Abstract: A pluggable electric connector can communicate a communication data signal and a control signal with an optical communication apparatus. An optical signal output unit includes a Mach-Zehnder type optical modulator including a phase modulation area and outputs an optical modulation signal modulated according to the communication data signal. An optical power control unit can control optical power of the optical modulation signal. A pluggable optical receptor can output the optical modulation signal to an optical fiber. A control unit controls a modulation operation of the optical signal output unit and the bias voltage applied to the phase modulation area. The control unit determines the bias voltage applied to the phase modulation area according to phase angle information of the control signal. The optical signal output unit applies the bias voltage determined by the control unit to the phase modulation area.

Abstract: This invention provides an optical transmitter that internally compensates for PDL with a high degree of precision and can output high-quality transmission signals. The optical transmitter is provided with the following: a light-outputting means for generating an optical signal; a data-outputting means for outputting a data sequence generated on the basis of information to be transmitted; a driving means for applying, to an optical modulator, a bias voltage with a pilot signal superimposed thereon; the optical modulator, which, upon the application of the bias voltage, modulates the abovementioned optical signal on the basis of the aforementioned data sequence and outputs the modulated signal; and a controlling means for controlling the bias voltage in accordance with the strength of the pilot signal extracted from the modulated signal.

Abstract: The present invention provides a transceiver for optical transmission in which noise can be sufficiently suppressed and a method for the same using a simple configuration. The transceiver includes an optical transmitter module in which a low frequency obtained by boosting and filtering a power-source voltage is superimposed onto and LD drive current.

Abstract: An optical transceiver includes: an optical reception circuit which converts a first optical signal received from an optical cable into a first electrical data signal and outputs the first electrical data signal; an optical transmission circuit which converts a second electrical data signal into a second optical signal and outputs the second optical signal to the optical cable; a noise detection unit which detects power supply noise from a power supply voltage; and a control unit which sets at least one of operational characteristics of the optical reception circuit and operational characteristics of the optical transmission circuit in accordance with a detection result of the noise detection unit.

Abstract: An optical transmitter with an external modulator includes a light-emitting unit emitting a continuous wave light, a modulation unit modulating the continuous wave light in accordance with an electric signal, a first terminal applying a first positive voltage to a cathode of the light-emitting unit and a cathode of the modulation unit, a second terminal applying a second positive voltage of a constant value to an anode of the light-emitting unit, and a third terminal applying a third positive voltage with the electric signal to an anode of the modulation unit. The second positive voltage is set to a value higher than the first positive voltage, and the third positive voltage is set to a value lower than the first positive voltage.