Abstract: An optical signal adjustment apparatus detects an optical signal intensity level of signal light components with multiple different wavelengths for each of the wavelengths in an optical detection unit and adjusts the signal light components with the wavelengths for each of the wavelengths in a variable optical attenuator to make the optical signal intensity levels of the signal light components uniform. The apparatus includes a control unit configured to successively select a detection signal associated with each of the wavelengths from the optical detection unit and generate a control signal for the wavelength based on the selected detection signal. The control signal generated by the control unit is supplied to the variable optical attenuator associated with the selected detection signal.

Abstract: In order to make it possible to automatically execute a wiring process which satisfies not only a design condition but also design quality relating to an electric characteristic, according to the embodiment, an automatic wiring apparatus includes a design condition changing section for changing a design condition in accordance with priority information regarding the design condition where a wiring process which satisfies the design condition cannot be carried out by a first wiring processing section, a quality allowability decision section for deciding whether or not quality of a wiring region can be allowed where a wiring process which satisfies the design condition after the changing can be executed by a second wiring processing section and an outputting section for outputting a result of the wiring process of the wiring region by the second wiring processing section if it is decided that the quality of the wiring region can be allowed.

Abstract: An optical detecting circuit includes a PD receiving unit generating voltage depending on an optical level of input light, a high range amplifying unit amplifying the generated voltage, a low range amplifying unit amplifying the generated voltage by a gain larger than that of the high range amplifying unit, an A/D converting unit digitizing voltage levels of the output voltages of the high range amplifying unit and the low range amplifying unit, a selecting unit comparing the A/D conversion results with thresholds to select for output one of the digitized values of the voltage levels of the output voltages of the high range amplifying unit and the low range amplifying unit, and an output correcting unit obtaining a correction value depending on the selection result from a correcting table to add the correction value to the value selected by the selecting unit.

Abstract: An optical communication device whereby optical attenuation characteristics are linearized to suppress optical level variations among wavelengths attributable to the attenuation characteristics and thereby enable long-distance transmission. Optical attenuators attenuate optical signals of respective wavelengths in accordance with optical attenuation data output from a control data converter. An optical multiplexer multiplexes the optical signals, and an optical amplifier amplifies the multiplexed signal. A control data output unit outputs optical signal control data based on differences between a set optical level and the optical levels of respective wavelengths input to the optical amplifier. A data table holds data for converting the optical signal control data to the optical attenuation data so that the optical attenuation amounts of the attenuators may be linearized with respect to the optical signal control data.

Abstract: In order to make it possible to automatically execute a wiring process which satisfies not only a design condition but also design quality relating to an electric characteristic, according to the embodiment, an automatic wiring apparatus includes a design condition changing section for changing a design condition in accordance with priority information regarding the design condition where a wiring process which satisfies the design condition cannot be carried out by a first wiring processing section, a quality allowability decision section for deciding whether or not quality of a wiring region can be allowed where a wiring process which satisfies the design condition after the changing can be executed by a second wiring processing section and an outputting section for outputting a result of the wiring process of the wiring region by the second wiring processing section if it is decided that the quality of the wiring region can be allowed.

Abstract: An optical signal adjustment apparatus detects an optical signal intensity level of signal light components with multiple different wavelengths for each of the wavelengths in an optical detection unit and adjusts the signal light components with the wavelengths for each of the wavelengths in a variable optical attenuator to make the optical signal intensity levels of the signal light components uniform. The apparatus includes a control unit configured to successively select a detection signal associated with each of the wavelengths from the optical detection unit and generate a control signal for the wavelength based on the selected detection signal. The control signal generated by the control unit is supplied to the variable optical attenuator associated with the selected detection signal.

Abstract: An optical communication device whereby optical attenuation characteristics are linearized to suppress optical level variations among wavelengths attributable to the attenuation characteristics and thereby enable long-distance transmission. Optical attenuators attenuate optical signals of respective wavelengths in accordance with optical attenuation data output from a control data converter. An optical multiplexer multiplexes the optical signals, and an optical amplifier amplifies the multiplexed signal. A control data output unit outputs optical signal control data based on differences between a set optical level and the optical levels of respective wavelengths input to the optical amplifier. A data table holds data for converting the optical signal control data to the optical attenuation data so that the optical attenuation amounts of the attenuators may be linearized with respect to the optical signal control data.