Abstract: A bridge intelligent cable system with a built-in fiber grating sensor is provided, which is applied in a cable bearing structure such as a cable-stayed bridge, a suspension bridge, and an arch bridge. The system includes an anchor cup, a wire dividing plate, a connecting cylinder, a fiber grating sensor, and a cable body, in which the fiber grating sensor includes a fiber grating strain sensor and a fiber grating temperature sensor, tail fibers of the fiber grating strain sensor and the fiber grating temperature sensor are led out, the packaged fiber grating strain sensor is fixedly connected to an outer-layer steel wire of the connecting cylinder, the packaged fiber grating temperature sensor is suspended on the steel wire of the connecting cylinder, holes are punched in the wire dividing plate, and a preserved steel pipe is buried in advance in the connecting cylinder and the anchor cup.

Abstract: A bridge intelligent cable system with a built-in fiber grating sensor is provided, which is applied in a cable bearing structure such as a cable-stayed bridge, a suspension bridge, and an arch bridge. The system includes an anchor cup (1), a wire dividing plate (5), a connecting cylinder (4), a fiber grating sensor, and a cable body (11), in which the fiber grating sensor includes a fiber grating strain sensor (9) and a fiber grating temperature sensor (10), tail fibers of the fiber grating strain sensor (9) and the fiber grating temperature sensor (10) are led out, the packaged fiber grating strain sensor (9) is fixedly connected to an outer-layer steel wire (3) of the connecting cylinder (4), the packaged fiber grating temperature sensor (10) is suspended on the steel wire (3) of the connecting cylinder (4), holes (5-1) are punched in the wire dividing plate (5), and a preserved steel pipe (7) is buried in advance in the connecting cylinder (4) and the anchor cup (1).

Abstract: An optical filter device (100) for collimating input signals and selecting optical signals in a predetermined wavelength band includes a dual fiber pigtail (DEP) (112) receiving an input and output optical fibers (113, 114), a molded lens (111), a sleeve (130), and a filter (120). The molded lens between the DFP and the filter has a single index. The molded lens collimates dispersed-light beams coming from the input optical fiber to parallel-light beams, and converges the parallel-light beams reflected by the filter for transmission into the output optical fiber. The filter absorbs optical light beams in predetermined wavelength bands. The sleeve allows connection of the filter to the lens without requiring use of epoxy on optically functional parts of the molded lens.

Abstract: An optical assembly includes an input fiber (30) and an output fiber (31), a ferrule (32) receiving the input and output fibers therein, a molded lens (33) and a filter (34). The molded lens includes a solid cylindrical main body (334), and an annular protrusion (333) extending from a front end of the main body. The main body has an oblique rearward end face (331), and an aspherical forward end face (332) opposite to the rearward end face. The ferrule also has an oblique forward end face (322) which is close to and substantially parallel to the oblique rearward end face of the molded lens. The filter is attached to a forward end of the annular protrusion. Light rays from the input fiber pass through and are made parallel by the molded lens. Parallel rays of a predetermined wavelength are transmitted through the filter. Parallel rays having other wavelengths are reflected at the filter and transmit through the output fiber.

Abstract: An optical isolator (100) includes an input port (10), an output port (20), an optical isolating means (30) and a mounting tube (40). The input port includes an optical fiber (13) having an exposed end, a ferrule (12) defining a through hole 121 for holding the optical fiber, a molded lens (11), a sleeve (14) and a metal holder (15). The molded lens collimates optical signals transmitted from the optical fiber. The output port is constructed like the input port. The optical isolating means is disposed in an optical path between the input port and the output port. The optical isolating means transmits optical signals in an input direction and blocks reflected optical signals in the reverse direction. The mounting tube accommodates and fixes the input and output ports and the optical isolating means.

Abstract: An optical switch (1) for switching light beams between one input optical fiber (21) and a plurality of output optical fibers (31) has a first port (2), a second port (3) and a switching element (4) between the first and second ports. The input port aligns with the input optical fiber and collimates input light beams. The output port aligns with the output fibers and decollimates output light beams. The switching element includes at least one rotatable optical element (41) for deflecting the light beams and a holder (42) for containing the rotatable optical elements. The rotatable optical element is rotatable among a plurality of positions, whereby, when the optical element is in different positions, the light beams from the input optical fiber are switched to different output fibers, respectively.

Abstract: An optical collimator (10) includes an input optical fiber (11), an output optical fiber (12), a ferrule (13) receiving the input optical fiber and the output optical fiber therein, a molding lens (14), and a filter (15). The molding lens includes a solid cylindrical main body (141), and a pair of cylindrical protrusions (142, 143) respectively extending from opposite ends of the main body. The main body includes an inmost oblique end face (18), and an opposite aspherical end face (19). The ferrule is received in one protrusion and opposes the oblique end face. The filter is received in the other protrusion and opposes the aspherical end face.

Abstract: A multi-channel collimating device includes an input device and an output device. The input device includes a plurality of input optical fibers, an input fiber receiving device defining a first space to receive said input fibers, a first lens adapted for collimating input light rays from said input fibers. The output device includes a plurality of output optical fibers, an output fiber receiving device defining a second space to receive said output fibers, a second lens for focusing the collimated input light rays from the first lens into said output fibers. The first and second lenses are positioned between the input and output fiber receiving devices. During operation, the input light rays from the input fibers are changed into parallel light rays by passing through the first lens. Then the second lens focuses the parallel light rays into the corresponding output fibers. Thus a multi-channel collimation is attained.

Abstract: An optical switch includes an input port (20) having an input fiber (201), an output port (30) having a plurality of output fibers (3011), a switching element (40), a driving device (60) and a base (50). The input port, the output port and the driving device are mounted on the base. The switching element has a plurality of prisms for switching light beams from the input fiber to the different output fibers. Each prism can be moved into an optical path between the input and output fibers, and can deflect the light beams from the input fiber in different direction, thereby, switching the input light beams to different, predetermined output fibers.

Abstract: An optical switch includes an input port (21) having an input fiber (211), an output port (22) having a plurality of output fibers (221), a prism assembly (23) having a plurality of prisms, a holder (25), a driving device (27) and a base (26). The input port, the output port and the driving device are mounted on the base. The holder is slidingly engaged with the base and defines a plurality of mounting holes arranged in a line, and each mounting hole accommodates a prism. As the holder is moved by the driving device, each prism moves, one at a time, into an optical path between the input and output fibers, and can deflect the light beams from the input fiber in different directions, thereby, switching the input light beams to different, predetermined output fibers.

Abstract: An optical switch includes an input port (200) having an input fiber (201), an output port (300) having a plurality of output fibers (301), a switching element (400), a driving device (500) and a base (600). The input port, the output port and the driving device are mounted on the base. The driving device can drive the switching element to rotate between a plurality of positions. As the switching element is rotated to a position, input light beams coming from the input fiber can be switched by the switching element to a corresponding output fiber.

Abstract: A mechanical optical switching device includes an input assembly (21), an output assembly (22), an optical switching assembly (23), and a driving means (27). The input assembly includes a plurality of input optical fibers (211) and a multi-fiber ferrule (212). The output assembly includes a plurality of output optical fibers (221) and a multi-fiber ferrule (222). The optical switching assembly is positioned between the input and output assemblies, and includes two arrays of lenses (231, 232). Each lens has a slanted end face (50), and an opposite aspherically curved end face (70). Two holding boards (251, 252) fixedly retain the lenses of the two arrays of lenses therein. The driving means can drivingly move the holding boards. Accordingly, various of the lenses of the two arrays of lenses can be moved to align with the input assembly and the output assembly, thereby providing switching of optical transmission paths between the input and output optical fibers.

Abstract: An optical switch assembly includes an input port (21), an output port (22), a switching device (23)′ and a driving device (25). The input port includes an input fiber (211), a capillary (212) retaining the input fiber and a first collimating lens (213) fixed at a front end of the capillary. The switching device locates between the input and output ports and includes a number of second collimating lenses (231) fixed in a connection plate (232). One end of the connection plate retains the second collimating lenses and a second end connects with the driving device. The output port is aligned with the input port and includes a number of output fibers (221) and a holder (222) retaining the output fibers. The driving device drives the switching device to position a second collimating lens in a light path between the input and output ports thereby effecting a switching between the input and output fibers.

Abstract: An optical switch according to the present invention, includes an input device (100) having an input fiber (120) received therein, an output device (200) having a plurality of output fibers (220) received therein, an optical switch device (300) which includes a prism array (310) consisting of a plurality of prisms, and a driving device (400). The driving device drives the switch device to move back and forth, selectively locating a specific prism of the prism array in an optical path between the input device and the output device, for selectably transferring an input light beam from the input fiber to a specific output fiber.

Abstract: An optical switch (10) for switching light beams from one input optical fiber (101) between a plurality of output optical fibers (201) has a first collimating lens (120) aligning with the input optical fiber and collimating input light beams, a second collimating lens (220) aligning with the output fibers and collimating output light beams; and a switching element (300) between the first and second collimating lens comprising a plurality of optical elements (301). Each optical element can be sequentially moved into an optical axis between the input and output optical fibers, and can deflect the light beams from the input optical fiber in a unique direction, thereby switching the input light beams to different output fibers.

Abstract: A mechanical optical switch includes an input optical fiber, an input collimating lens, an aspherical lens and a plurality of output optical fibers all having a common optical axis. A rotating device rotates the aspherical lens. The aspherical lens has a planar end surface on one end for receiving and deflecting parallel light beams from the input collimating lens. An aspherical end surface on the other end focuses light on a given output optical fiber. In operation, light beams transmitted from the input optical fiber are selectively converged into a desired output optical fiber by rotating the aspherical lens by means of the rotating device.

Abstract: An optical switch for switching light beams from an optical input fiber among a plurality of output optical fibers includes a mounting frame (5), an optical input device (1) having an input optical fiber (111) for emitting light signals and an optical output device (4) having a plurality of output optical fibers (411) for receiving the emitted light signals out of the optical switch. The input device has a first collimating lens (12). A switch assembly (2) includes a lens holder (22) and a plurality of second collimating lenses (21) is mounted in the lens holder. Each of the second collimating lenses has a different geometry. A driving device (3) drives the lens holder to rotate. Thus, when a preselected collimating lens is aligned between the optical input device and the optical output device, a unique beam optical path is formed and an input light signal switches to a different output fiber.

Abstract: An optical switch for switching multiple beams from a plurality of input optical fibers among a plurality of output optical fibers includes a mounting frame (26), an input optical device (21) for emitting light signals and an output optical device (22) for receiving the emitted light signals out of the optical switch. A parallel first and second prism holders (251), (252) are movably mounted between the input optical device and the output optical device. A first prism array (23) including a plurality of first prisms is attached to the first prism holder and a second prism array (24) is attached to the second prism holder. A driving device assembly (27), which comprises a pair of driving devices (271) and two pairs of connecting poles (272), and drives the first and second prism holders to slidably move relative to the mounting frame and each other.

Abstract: A multi-channel optical switch (10) switches light signals from a plurality of input fibers (101) between different permutations of output fibers (201). The optical switch includes an input assembly (100), an output assembly (200), a lightpath-changing assembly (300) and a driving assembly (400). The input assembly is identical to the output assembly. The lightpath-changing assembly comprises two prisms (301,302) which can be rotated by the driving assembly. The light paths from the input fibers to the output fibers are changed by rotation of the two prisms.

Abstract: An optical collimator (10) includes an input optical fiber (11), an output optical fiber (12), a ferrule (13) receiving the input optical fiber and the output optical fiber therein, a molding lens (14), and a filter (15). The molding lens includes a solid cylindrical main body (141), and a pair of cylindrical protrusions (142, 143) respectively extending from opposite ends of the main body. The main body includes an inmost oblique end face (18), and an opposite aspherical end face (19). The ferrule is received in one protrusion and opposes the oblique end face. The filter is received in the other protrusion and opposes the aspherical end face.