摘要:
An optical switch disposed in intermediate positions of optical paths to define a channel of a light signal constitutes a cell member in whose interior cells are formed and a waveguide member having fine slits; and a gas is filled in cells of which side walls are formed by piezoelectric/electrostrictive elements or antiferroelectric elements, a liquid is filled in the fine slits, and the cells and the fine slits are communicated to each other via a communicating hole; optical waveguides intersect at the fine slits, and the cells are disposed at the crossing locations, and said side walls are expanded/constricted by applying an electric field to the piezoelectric/electrostrictive elements or antiferroelectric elements which form the side walls of the cells, and a part of the gas stored in each cell is ejected at a corresponding intersection area from said communicating hole into the corresponding fine slit.
摘要:
An optical switch includes a plurality of transmitting devices with a plurality of optical fibers. A plurality of receiving devices are provided that include a plurality of optical fibers. At least a portion of the transmitting devices simultaneously focus and direct transmitter output beams from the plurality of transmitting devices to the plurality of receiving devices.
摘要:
A first plurality of stages each support a ferrule surrounding an end portion of a corresponding one of N optical input fibers. A second plurality of stages each support a ferrule surrounding an end portion of a corresponding one of M optical output fibers. Mechanical mechanisms translate the stages along a plurality of orthogonal X and Y axes to align a facet of a selected one of the N input optical fibers with a facet of a selected one of the M output optical fibers. The stages of the input optical fibers, the output optical fibers, or both, have mechanical mechanisms for moving the ferrules along Z axes perpendicular to the X and Y axes into and out of alignment holes of a central panel to physically mate the facets of the coupled fibers.
摘要:
An optical switch comprises a light transmission portion, an optical path-changing portion, an actuator portion and light transmission channels; said light transmission portion having a light reflecting plane provided on one part of a plane facing the changing portion to totally reflect light; said optical path-changing portion being provided in proximity to the light reflecting plane and having an optical path-changing member for reflecting or scattering light; said actuator portion having a mechanism being displaced and transmitting displacement to the optical path changing portion; and said light transmission channels having optical wave guiding bodies and being provided in three directions with the light reflecting plane as a starting point. Switching or dividing of an optical path is conducted by contacting or separating the optical path-changing portion to or from the light reflecting plane by displacement of the actuator portion.
摘要:
An all-optical, optical cross-connect includes first and second pluralities of multiport optical devices. Each of the first plurality of multiport optical devices have at least one input port for receiving a WDM optical signal and a plurality of output ports for selectively receiving one of more wavelength components of the optical signal. Each of the second plurality of multiport optical devices have a plurality of input ports for selectively receiving one of more wavelength components of the optical signal and at least one output port for selectively receiving one of more wavelength components of the optical signal. At least one of the first or second plurality of multiport optical devices are all-optical switches that can route every wavelength component independently of every other wavelength component. The plurality of input ports of the second plurality of multiport optical devices are optically coupled to respective ones of the plurality of output ports of the first plurality of multiport optical devices.
摘要:
In a WDM optical communication system that includes a plurality of nodes interconnected by communication links, a node is provided that includes a reconfigurable optical switch having a plurality of input ports and at least one output port. The node also includes a plurality of transmitters that are each coupled to one of the input ports of the optical switch. Each of the transmitters generate an information-bearing optical signal at a different channel wavelength from one another. The reconfigurable optical switch is adaptable to receive at any of the input ports any of the channel wavelengths at which the plurality of transmitters operate and direct the channel wavelengths to the output port. At least one backup transmitter is coupled to one of the input ports of the optical switch. The backup transmitter includes a tunable laser tunable to any of the channel wavelengths at which the plurality of transmitters operate. The reconfigurable optical switch includes at least one wavelength selective element that selects at least one channel wavelength from among any of the channel wavelengths received at any of the input ports. The switch also includes a plurality of optical elements associated with the wavelength selective elements, Each of the optical elements direct one of the selected channel wavelengths selected by the associated wavelength selective element to the output port independently from every other channel wavelength. The selected channel wavelengths directed to the output port are combined on the output port.
摘要:
An optical switch (100) includes a shell (40) forming an input port (10) and first and second output ports (50, 60) with an optical switching subassembly enclosed therein between the input port and the output ports. The optical switch subassembly includes two light transmitting blocks (21, 22) having surfaces spaced from and opposing each other. Two light transmitting liquid sections having a refractive index substantially identical to that of the blocks are movably retained between the surfaces. The liquid sections are spaced from each other forming an air section therebetween. A piezoelectric element (31) is in physical engagement with the liquid sections. The piezoelectric element can be electrically biased to move the air section and the liquid sections between a first position wherein the air section is located on an optical path from the input port to the second output port, light from the input port being fully reflected by the surfaces of the blocks and being redirected to the first output port and a second position where one of the liquid sections is located on the optical path, allowing light to completely travel along the optical path and thus switching the light from the input port to different output ports.
摘要:
An optical switching system employing switching modules. Each module comprises (a) a source channel, (b) a transmitting element, (c) a receiving element, and (d) a destination channel. The transmitting element directs the source channel signal to a destination channel. The transmitting element includes an initial beam deflector and a beam deflection amplifier. The receiving element includes a beam deflection compressor and a beam aligner. One embodiment of the initial deflector is a pair of focusing lenses, one of which is displaced by a piezoelectric actuator. When one lens is displaced a distance d, the output light beam has a deflection angle &agr;=(f1+f2)/f2. The beam deflection amplifier multiplies the small angle &agr; by a transfer function F to result in a beam with a deflection angle F&agr;. The receiving element is the transmitting element in reverse. The first system configuration connects a single channel to one of a number of channels. The second system configuration connects a group of M channels with another group of N channels. The third system configuration cross-connects N channels in an arbitrary manner.
摘要:
An optical component comprises channels in which liquids of suitable refractive index are arranged. By displacing the liquids within the channels by means of suitable actuators, the light is optionally led through the liquid. By selecting a suitable refractive index, light beams may be deflected at any desired angles. In a miniaturized embodiment, light beams can be controlled at high frequencies. In a light-conducting basic body, suitable cavities are connected to channels, and arranged in the channels is a liquid with a refractive index which essentially corresponds to the refractive index of the basic body. By means of piezoelectric actuators, which are arranged on the cavities, the liquid is displaced into the channels. As a result, light which leads through the basic body is deflected in optionally two different directions, and an optical switch is provided.
摘要:
An optical switch for switching a light beam in an optical fiber communication line. The switch includes a hollow body, an optical system supported by a first part of the body for movement to act upon a light beam, and an actuator supported by a second part of the body for moving the optical system between first and second positions, in at least one of which positions the optical system acts upon a light beam. An elastic element is included, which has a first part connected to the actuator and a second part connected to the optical system for movement of the optical system by the actuator.