Abstract: An apparatus and to a method of optoelectrical conversion, comprising the steps of: providing a first electrical signal to an electrical directional element, using the electrical directional element to direct the first electrical signal to an optoelectric converter, using the optoelectric converter for converting the first electrical signal into an optical signal and providing the optical signal to a DUT, using the optoelectric converter for receiving and converting a reflected optical signal reflected by the DUT back into a second electrical signal, and using the electrical directional element to direct the second electrical signal to a receiver.

Abstract: An optical time domain reflectometry system is used to determine a power response from a device under test -DUT-. For providing power information data, an optical transmitter launches a probe signal with a first wavelength into a DUT, an optical receiver determines optical power information of a first return signal returning from the DUT at a second wavelength, wherein the second wavelength is not equal to the first wavelength, and an analyzer analyzes the power information determined by the optical receiver, and generating data to be at least one of: visualized, stored, and further processed.

Abstract: An optical imaging device for visually inspecting an optical element is described. The optical imaging device comprises an optical connector interface adapted for connecting the optical imaging device to the optical element, an imaging unit adapted for acquiring image data of the optical element's surface, and a display for visualizing the image data. The optical imaging device further comprises a focus evaluation facility adapted for deriving a focus evaluation value indicating the instantaneous image definition of the acquired image, said focus evaluation value being derived from at least one of: the acquired image data itself and additional signals related to the position of the imaging unit relative to the surface of the optical element. The focus evaluation value is usable as a focussing aid for either automatically or manually adjusting the focus.

Abstract: The present invention relates to an apparatus and to a method of determination of an optical property of a DUT, in particular of an optical fiber, by means of OTDR, comprising the steps of: coupling an initial optical signal into the DUT, detecting a response signal of the DUT, and determining the optical property of the DUT by means of OTDR using at least a second order backscatter part of the response signal.

Abstract: An optical time domain reflectometry system is used to determine a power response from a device under test -DUT-. For providing power information data, an optical transmitter launches a probe signal with a first wavelength into a DUT, an optical receiver determines optical power information of a first return signal returning from the DUT at a second wavelength, wherein the second wavelength is not equal to the first wavelength, and an analyzer analyzes the power information determined by the optical receiver, and generating data to be at least one of: visualized, stored, and further processed.

Abstract: The present invention relates to an apparatus and to a method of determination of an optical property of a DUT, in particular of an optical fiber, by means of OTDR, comprising the steps of: coupling an initial optical signal into the DUT, detecting a response signal of the DUT, and determining the optical property of the DUT by means of OTDR using at least a second order backscatter part of the response signal.

Abstract: A method for determining the time-of-flight of a device under test, wherein a return signal returning from the device under test in response to the probing signal comprising a sequence of pulses according to a first code sequence is detected and a second code sequence from the detected return signal is derived, and a correlation function is determined by correlating the first code sequence and the second code sequence, a main peak is identified, a time position of the main peak is determined and the time-of-flight is derived from the time position.

Abstract: The present invention relates to an apparatus and to a method of wavelength selective optical power measurement, comprising the steps of selecting a plurality of at least partly different spectral parts of the optical signal under test in a cascaded way, directing the selected parts onto a corresponding number of photo detectors, and comparing the power values determined by the photo detectors with predetermined values.

Abstract: An optical measuring device for providing a measurement of an optical device under test -DUT- comprises a measuring unit for providing an optical stimulus signal for the DUT and/or receiving a response signal of the DUT, and a visual fault localization unit for visually localizing faults within the DUT or a connection thereto. The measuring unit and the visual fault localization unit are preferably coupled to a signal direction unit, and the signal direction unit is further coupled to a connector representing an interface of the optical measuring device for coupling the DUT thereto.

Abstract: For measuring time-of-flight of optical signals traveling between a measurement unit and an optical repeater, the measurement unit emits a first light beam, the repeater detects a portion of the first light beam, and generates a second light beam in response to the first light beam, said first light beam and said second light beam having a determined first time relation, the measurement unit detects a portion of the second light beam returning from the second position, determines a second time relation between the first light beam and the second light beam and determines the time-of-flight of the first and the second beam on the base of the first time relation and the second time relation.

Abstract: An optical measuring device for providing a measurement of an optical device under test -DUT- comprises a measuring unit for providing an optical stimulus signal for the DUT and/or receiving a response signal of the DUT, and a visual fault localization unit for visually localizing faults within the DUT or a connection thereto. The measuring unit and the visual fault localization unit are preferably coupled to a signal direction unit, and the signal direction unit is further coupled to a connector representing an interface of the optical measuring device for coupling the DUT thereto.

Abstract: The present invention relates to a method of determination of optical properties of an optical component, comprising the steps of: a: coupling a first optical signal into the optical component, b: detecting at least one first optical signal reflected and/or backscattered by the optical component, c: using the detected optical signal to evaluate the distance the first optical signal has traveled between sending and detecting, and d: concurrently performing steps a-c for at least a second optical signal.

Abstract: For providing an optical measuring signal to an optical component to be measured, the spectral density of the optical signal is broadened until relevant non-linear effects in the optical component occur, at most, by combining a plurality of initial optical signals to create the optical signal.

Abstract: In a reflectometer measurement for measuring—in response to a stimulus signal—return signals reflected and/or backscattered in a network to be measured, operation for receiving the return signals is temporarily disabled or at least suppressed during such operation modes, wherein return signals resulting from closer ranges of the network can cause substantial spurious signals to be added to return signals resulting from more distant ranges of the network.

Abstract: For visualizing faults in an optical fiber connection, imaging signals from the optical fiber connection are received and an image processing of the imaging signals is provided in order to detect faults in the fiber connection. The imaging signals are graphically represented, whereby a visualization of the detected faults is provided by representing such faults in accordance with a predefined coloring scheme.

Abstract: A characteristic of an optical property of a device under test—DUT—is determined by providing to the DUT a first laser signal at a first center wavelength, modulated by a first modulation frequency, and a second laser signal at a second center wavelength, modulated by a second modulation frequency. Response signals from the DUT on the applied first and second laser signals are received. The characteristic of the optical property of the DUT is then determined based on an analysis of the received response signals for different measurement setups of parameter settings for the first center wavelength, the first modulation frequency, the second center wavelength, and the second modulation frequency, in conjunction with the parameter settings for each measurement setup.

Abstract: An optical measuring device for measuring in a fiber optic network, comprises a measuring unit for performing the measurement in the fiber optic network, a processing unit for processing the measuring results from the measuring unit, and a display for visualizing the processed measuring results. The processing unit further receives imaging signals provided by an imaging unit and processes such imaging signals to be displayed by the display.

Abstract: In a reflectometer measurement for measuring—in response to a stimulus signal—return signals reflected and/or backscattered in a network to be measured, operation for receiving the return signals is temporarily disabled or at least suppressed during such operation modes, wherein return signals resulting from closer ranges of the network can cause substantial spurious signals to be added to return signals resulting from more distant ranges of the network.

Abstract: For visualizing faults in an optical fiber connection, imaging signals from the optical fiber connection are received and an image processing of the imaging signals is provided in order to detect faults in the fiber connection. The imaging signals will be graphically represented, whereby a visualization of the detected faults is provided by representing such faults in accordance with a predefined coloring scheme.

Abstract: An optical measuring device (10) for measuring in a fiber optic network (80), comprises a measuring unit (40) for performing the measurement in the fiber optic network (80), a processing unit (60) for processing the measuring results from the measuring unit (40), and a display (70) for visualizing the processed measuring results. The processing unit (60) further receives imaging signals provided by an imaging unit (30) and processes such imaging signals to be displayed by the display (70).