摘要:
An optical switching method and apparatus. In one aspect of the present invention, the disclosed apparatus includes first and second multi-mode interference (MMI) splitting devices in a semiconductor substrate. First and second outputs of the first MMI splitting device are optically coupled to first and second inputs, respectively, of the second MMI splitting device. First and second phase control devices are included in the semiconductor substrate. The first input of the second MMI splitting device is optically coupled to the first output of the first MMI splitting device through the first phase control device. The second input of the second MMI splitting device is optically coupled to the second output of the first MMI splitting device through the second phase control device. The first input of the first MMI splitting device is selectively optically coupled to the first and second outputs of the second MMI splitting device in response to the first and second phase control devices. The second input of the first MMI splitting device is selectively optically coupled to the first and second outputs of the second MMI splitting device in response to the first and second phase control devices.
摘要:
A device for switching an optical beam in an optical switch. In one embodiment, the disclosed optical switch includes an optical switching device disposed in a semiconductor substrate. The optical switch also includes a first optical path through the semiconductor substrate such that the first optical path includes the optical switching device. A second optical path through the semiconductor substrate is included such that the second optical path not including the optical switching device. A first optical confinement layer is disposed between the first and second optical paths.
摘要:
An optical processing element such as an optical switch for which continuous or periodic self-testing and/or alignment is provided. In one embodiment, an optical sensor is disposed in a semiconductor substrate layer within a region surrounding an optical path of an optical output port of the optical processing element. In one embodiment, an optical fiber optically coupled to the optical output port is disposed in a V-groove in which the optical sensor is disposed. In one embodiment, circuitry is coupled to the optical sensor to adjust continuously or periodically over time the alignment of an optical beam directed to the optical output port.
摘要:
An apparatus and method for modulating a phase of optical beam independent of polarization. In one embodiment, an apparatus according to embodiments of the present invention includes a first region of an optical waveguide disposed in semiconductor material, the first region having a first conductivity type, and a second region of the optical waveguide disposed in the semiconductor material, the second region having a second conductivity type opposite to the first conductivity type. The apparatus also includes a substantially V shaped insulating region disposed between the first and second regions of the optical waveguide, wherein a vertex of the substantially V shaped insulating region forms an intersecting line that is substantially parallel to an optical path of an optical beam to be directed through the optical waveguide.
摘要:
An optical interleaving switching method and apparatus. In one aspect of the present invention, the disclosed apparatus includes first and second multi-mode interference (MMI) coupling devices disposed in a semiconductor substrate. Each of the first and second MMI coupling devices include first and second inputs and first and second outputs. A first optical coupler having a first optical path length is included. The first output of the first MMI coupling device is optically coupled to the first input of the second MMI coupling device through the first optical coupler. A second optical coupler having a second optical path length is also included. The second output of the first MMI coupling device is optically coupled to the second input of the second MMI coupling device through the second optical coupler. The first optical path length of the first optical coupler is different than the second optical path length of the second optical coupler. In another aspect of the invention, a 2×2 optical switch is optically coupled to the inputs and/or outputs of the first and/or second MMI coupling devices providing multiplexing/demultiplexing and switching functionality for multi-channel optical input and/or output beams.
摘要:
An optical steering method and apparatus. In one aspect of the present invention, the disclosed apparatus includes a multi-mode interference (MMI) device disposed in a semiconductor substrate. The MMI device includes an input and a plurality of outputs Each one of the plurality of outputs of the MMI device is optically coupled to the input of the MMI device. A phase array is disposed in the semiconductor substrate. The phase array includes a plurality of inputs and a plurality of outputs. The plurality of inputs of the phase array optically are coupled to the plurality of outputs of the phase array. The phase array is coupled to control relative phase differences between optical beams output by each one of the plurality of outputs of the phase array.
摘要:
Techniques and architectures for providing a reflective target area of an integrated circuit die assembly. In an embodiment, a reflective bevel surface of a die allows an optical signal to be received from the direction of a side surface of a die assembly for reflection into a photodetector. In another embodiment, one or more grooves in a coupling surface of the die provide respective leverage points for aligning a target area of the bevel surface with a detecting surface of the photodetector.
摘要:
An optical modulator or switch is disclosed. An apparatus includes an optical splitter disposed in a semiconductor material that splits an optical beam having a first wavelength into first and second portions. The first and second portions of the optical beam are to be directed through first and second optical waveguides, respectively. The first optical waveguide is also optically coupled to receive a pump optical beam to amplify and phase shift the first portion of the optical beam. A diode structure is disposed in the first optical waveguide and is selectively biased to sweep out free carriers from the first optical waveguide generated in response to two photon absorption in the optical waveguide. An optical coupler is disposed in the semiconductor material and is optically coupled to the first and second optical waveguides to combine the first and second portions of the optical beam.
摘要:
A semiconductor-based tunable add/drop method and apparatus. In one aspect of the present invention, a method according to an embodiment of the present invention includes splitting a first optical beam having multiple wavelengths into second and third optical beams with a first 3 dB optical coupler disposed in a semiconductor substrate. Portions of the second and third optical beams having a tunable wavelength are reflected back to the first 3 dB optical coupler with first and second pluralities of silicon and polysilicon interfaces, respectively, disposed along the semiconductor substrate. In another embodiment, the portions of the second and third optical beams having a tunable wavelength are reflected back to the first 3 dB optical coupler with first and second pluralities of modulated charged regions. Portions of the second and third optical beams not reflected are directed to a second 3 dB optical coupler disposed in the semiconductor substrate. The portions of the second and third optical beams not reflected are combined into a fourth optical beam with the second 3 dB optical coupler.
摘要:
An electrical-optical coupling and detecting device. An apparatus according to an embodiment of the present invention includes a reflective surface defined on semiconductor material. The reflective surface is to reflect an incident optical beam towards an optical destination. An optical detector is monolithically integrated in the reflective surface of the semiconductor material. The optical detector arranged in the reflective surface of the semiconductor material is to detect the incident optical beam.