Abstract: A distributed gas detection system includes one or more hollow core fibers disposed in different locations, one or more solid core fibers optically coupled with the one or more hollow core fibers and configured to receive light of one or more wavelengths from a light source, and an interrogator device configured to receive at least some of the light propagating through the one or more solid core fibers and the one or more hollow core fibers. The interrogator device is configured to identify a location of a presence of a gas-of-interest by examining absorption of at least one of the wavelengths of the light at least one of the hollow core fibers.

Abstract: A distributed gas detection system includes one or more hollow core fibers disposed in different locations, one or more solid core fibers optically coupled with the one or more hollow core fibers and configured to receive light of one or more wavelengths from a light source, and an interrogator device configured to receive at least some of the light propagating through the one or more solid core fibers and the one or more hollow core fibers. The interrogator device is configured to identify a location of a presence of a gas-of-interest by examining absorption of at least one of the wavelengths of the light at least one of the hollow core fibers.

Abstract: An embedded imaging system in one embodiment includes an encoding module, an imaging module, and a cable. The encoding module is disposed proximate to a proximal end of the system, and is configured to encode frame synchronizing information into timing information comprising a reference clock. The imaging module is disposed proximate the distal end, and includes an image capture device configured to obtain imaging information and a decoding module. The decoding control module is configured to obtain the timing information, to decode the timing information to obtain recovered frame synchronizing information, and to control the image capture device using the recovered frame synchronizing information. The cable is interposed between the proximal end and the distal end, and is configured for passage therethrough of the timing information and the imaging information.

Abstract: A sensor interrogation unit in one embodiment includes a control module, a reading module, and a determination module. The control module is configured to control one or more lasers to provide a pulsed signal to at least one sensor. Each period of the pulsed signal has a first component having a first intensity and a second component having a second intensity that is lower than the first intensity. The reading module is configured to receive at least one return signal comprising reflections of the pulsed signal from the at least one sensor, to read one of the first component or the second component, and to provide frequency information based on the read reflections. The determination module is configured to determine at least one resonant frequency of the at least one sensor based on the frequency information.

Abstract: An embedded imaging system in one embodiment includes an encoding module, an imaging module, and a cable. The encoding module is disposed proximate to a proximal end of the system, and is configured to encode frame synchronizing information into timing information comprising a reference clock. The imaging module is disposed proximate the distal end, and includes an image capture device configured to obtain imaging information and a decoding module. The decoding control module is configured to obtain the timing information, to decode the timing information to obtain recovered frame synchronizing information, and to control the image capture device using the recovered frame synchronizing information. The cable is interposed between the proximal end and the distal end, and is configured for passage therethrough of the timing information and the imaging information.

Abstract: An optical subassembly and method of manufacturing an optical subassembly are provided. One subassembly includes a base, an optical emitter attached to the base and one or more spacers attached to the base surrounding at least a portion of the optical emitter. The optical subassembly further includes a ferrule sleeve attached to the base with the optical emitter and one or more spacers within the ferrule sleeve, wherein the ferrule sleeve is configured to receive an optical fiber therein. The optical subassembly also includes one or more reinforcement members attached to the base adjacent the ferrule sleeve and configured to provide support to the ferrule sleeve.