Abstract: An apparatus for fiber optic network testing includes a housing configured and adapted to couple to a mobile device and one or more network interfaces in communication with the housing. The one or more network interfaces are configured and adapted to operatively couple to a terminal end of a fiber optic cable. The apparatus also includes a magnification lens in operative communication with the housing and the one or more network interfaces.

Abstract: One or more embodiments are directed to camera probes and methods for visually inspecting an endface of an optical communication link, such as a fiber optic cable. Generally described, the camera probes and methods are directed to projecting light to an endface of the optical communication link from a first direction and at a first angle of incidence and projecting light to the endface at a second direction and at a second angle of incidence. A defect on the endface casts a first shadow when the light is projected in the first direction and a second shadow when the light is projected in the second direction. At least one of the first and second shadows is analyzed to determine its length. Using the length of the shadow and the known angle of incidence at which the light is projected, a height or depth of the defect is determined.

Abstract: A system for detecting a location of optical energy leakage from optical fibers, including a portable imaging device for generating a visible image of one or more optical fibers within a field of view of the portable imaging device, an optical energy detector assembly associated with the portable imaging device and configured to detect a location of optical energy leakage from an optical fiber within the field of view of the portable imaging device, and a processor associated with the imaging device and the optical energy detector assembly for overlaying a computer generated representation of the detected location of optical energy leakage from an optical fiber within the field of view of the portable imaging device over a visible image of the plurality of optical fibers generated by the portable imaging device to create a composite image.

Abstract: A method for detecting passive intermodulation (PIM) using a PIM analyzing device is provided. The PIM analyzing device transmits two signals comprising first and second signals over a signal transmission medium. The PIM analyzing device receives reflected signals associated with the transmitted signals. The PIM analyzing device determines whether the frequencies of the received signals correspond to the calculated PIM signal frequencies.

Abstract: A method for detecting passive intermodulation (PIM) using a PIM analyzing device is provided. The PIM analyzing device transmits two signals comprising first and second signals over a signal transmission medium. The PIM analyzing device receives reflected signals associated with the transmitted signals. The PIM analyzing device determines whether the frequencies of the received signals correspond to the calculated PIM signal frequencies.

Abstract: A prequalification determination is made on a DSL line to predict the bit rate improvement that might be accomplished by implementation of vectoring, providing information to use in determining whether or not to implement vectoring. Overall noise is measured on the line, along with FEXT noise, and the FEXT noise is subtracted from the overall noise, and the resulting value is employed to determine a predicted bit rate, providing an indication of the potential bit rate if vectoring is implemented.

Abstract: An apparatus for fiber optic network testing includes a housing configured and adapted to couple to a mobile device and one or more network interfaces in communication with the housing. The one or more network interfaces are configured and adapted to operatively couple to a terminal end of a fiber optic cable. The apparatus also includes a magnification lens in operative communication with the housing and the one or more network interfaces.

Abstract: A fiber end-surface inspection device and method illuminates the fiber end-surface from at least 2 different illumination angles, taking observations at the different angles, for detection of fiber end-surface imperfections, scratches or the like.

Abstract: Described herein is a system and method for detecting intermodulation distortion (IMD), such as passive intermodulation (PIM) signals, that are being generated by an active cellular transceiver. One such system may include a diagnostic module that detects signals emitted by an active cellular transceiver that has at least two active signals. The detected frequencies of the active signals are compared against potential PIM frequencies to identify potential PIM signals, and the results of this comparison will be analyzed statistically to generate a confidence value in the identification of potential PIM signals.

Abstract: A prequalification determination is made on a DSL line to predict the bit rate improvement that might be accomplished by implementation of vectoring, providing information to use in determining whether or not to implement vectoring. Overall noise is measured on the line, along with FEXT noise, and the FEXT noise is subtracted from the overall noise, and the resulting value is employed to determine a predicted bit rate, providing an indication of the potential bit rate if vectoring is implemented.

Abstract: A fault detector for fiber optic cabling is provided in a hand held device for detecting fiber faults, presence/absence of signal and wavelength of light present on an optical fiber. Audible and visual indicators of the fault/status and wavelength are provided.

Abstract: A fault detector for fiber optic cabling is provided in a hand held device for detecting fiber faults, presence/absence of signal and wavelength of light present on an optical fiber. Audible and visual indicators of the fault/status and wavelength are provided.

Abstract: An embodiment of the invention is a method for detecting defects in an optical fiber. The method includes obtaining an image of the optical fiber and separating a portion of the image for processing. A blob threshold is determined to isolate a blob in the portion of the image and characteristics of the portion of the image are adjusted to enhance detection of the blob. One or more blobs are detected in the image and a characteristic of the detected blobs is compared to blob criteria. The optical fiber is failed if the blob criteria are not met.

Abstract: A method for detecting defects in an optical device. The method includes obtaining an optical device that is a component of an optical communications system carrying information signals at a communications wavelength. Infrared light is applied to the optical device. The infrared light has a wavelength corresponding to the communications wavelength. An image of the optical device is obtained while the optical device is transmitting the infrared light. The image provides multidimensional data including positional values and intensity values. The image is then analyzed to detect defects in the optical device.