Abstract:
PROBLEM TO BE SOLVED: To provide an optical fiber Fabry-Perot interference sensor which is easily automatized and is inexpensively manufactured with alignment having no arbitrariness. SOLUTION: The manufacture method of the optical fiber Fabry-Perot sensor comprises a process of fixing optical fibers on a substrate and a process of forming at least one gap in the optical fibers after fixing the optical fibers on the substrate in order that a pair of optical fiber end surfaces, which are disposed oppositely to each other by automatic alignment and has a separated interval, are established in the Fabry-Perot sensor. Preferably, at least the part of a pair of the optical fibers is directly fixed on the substrate by an adhesive. Because the part of a pair of the optical fibers is formed from a single fiber directly fixed on the substrate, the end surfaces of the optical fibers which are disposed oppositely to each other and have the separated interval are automatically aligned. Further, the respective end surfaces which are automatically aligned and have the separated interval are preferably made round by electric discharge used for the gap formation. The end surfaces which are made round become perfect lenses formed as the end surfaces of fiber parts. COPYRIGHT: (C)2004,JPO
Abstract:
A method for making an electronic device includes positioning first (12) and second members (14) so that opposing surfaces thereof are in contact with one another, the first member (12) comprising silicon and the second member (14) comprising a low temperature co-fired ceramic (LTCC) material. The method further includes anodically bonding together the opposing surfaces of the first and second members to form a hermetic seal therebetween. The anodic bonding provides a secure and strong bond between the members without using adhesive. The method may further include forming at least one cooling (16, 17) structure in at least one of the first and second members. The least one cooling structure may comprise at least one first micro-fluidic cooling structure in the first member, and at least one second micro-fluidic cooling structure in the second member aligned with the at least one first micro-fluidic cooling structure.
Abstract:
A tunable grating apparatus includes a plurality of grating structures contained within an optical transmission path. A microelectromechanical (MEMS) actuator is operatively connected to each grating structure for changing the separation between the grating structures and tuning the grating to a desired wavelength selectivity. The grating structures preferably form a Bragg grating.
Abstract:
The optical fibers (32,34) are secured onto a substrate (30). A gap (42) is formed in the secured optical fibers, so to define a pair of self-aligned opposing paced apart optical fiber end faces (38,40). An independent claim is also included for fiber optic Fabry-perot interferometeric sensor.
Abstract:
A method for making an electronic device includes positioning first and second members so that opposing surfaces thereof are in contact with one another, the first member comprising silicon and the second member comprising a low temperature co-fired ceramic (LTCC) material. The method further includes anodically bonding together the opposing surfaces of the first and second members to form a hermetic seal therebetween. The anodic bonding provides a secure and strong bond between the members without using adhesive. The method may further include forming at least one cooling structure in at least one of the first and second members. The least one cooling structure may comprise at least one first micro-fluidic cooling structure in the first member, and at least one second micro-fluidic cooling structure in the second member aligned with the at least one first micro-fluidic cooling structure.
Abstract:
A tunable grating apparatus includes a plurality of grating structures contained within an optical transmission path. A microelectromechanical (MEMS) actuator is operatively connected to each grating structure for changing the separation between the grating structures and tuning the grating to a desired wavelength selectivity. The grating structures preferably form a Bragg grating.
Abstract:
The method for making the fiber optic Fabry-Perot sensor includes securing an optical fiber to a substrate, and forming at least one gap in the optical fiber after the optical fiber is secured to the substrate to define at least one pair of self-aligned opposing spaced apart optical fiber end faces for the Fabry-Perot sensor. Preferably, an adhesive directly secures the at least one pair of optical fiber portions to the substrate. The opposing spaced apart optical fiber end faces are self-aligned because the pair of optical fiber end portions are formed from a single fiber which has been directly secured to the substrate. Also, each of the self- aligned spaced apart optical fiber end faces may be substantially rounded due to an electrical discharge used to form the gap. This results in integral lenses being formed as the end faces of the fiber portions.
Abstract:
The optical fibers (32,34) are secured onto a substrate (30). A gap (42) is formed in the secured optical fibers, so to define a pair of self-aligned opposing paced apart optical fiber end faces (38,40). An independent claim is also included for fiber optic Fabry-perot interferometeric sensor.
Abstract:
The optical fibers (32,34) are secured onto a substrate (30). A gap (42) is formed in the secured optical fibers, so to define a pair of self-aligned opposing paced apart optical fiber end faces (38,40). An independent claim is also included for fiber optic Fabry-perot interferometeric sensor.
Abstract:
A tunable grating apparatus includes a plurality of grating structures contained within an optical transmission path. A microelectromechanical (MEMS) actuator is operatively connected to each grating structure for changing the separation between the grating structures and tuning the grating to a desired wavelength selectivity. The grating structures preferably form a Bragg grating.