摘要:
An all-optical integrated photonic clock, systems employing the same, and methods of making and using the same. Illustrative examples are provided based on silicon semiconductor technology that employs rectangular waveguides fabricated on SOI wafers. In some embodiments, the clock can provide an optical timing signal. In some embodiments, the clock can provide a jitter-free electrical signal derived from the clock by use of a high speed photodetector.
摘要:
An all-optical integrated photonic clock, systems employing the same, and methods of making and using the same. Illustrative examples are provided based on silicon semiconductor technology that employs rectangular waveguides fabricated on SOI wafers. In some embodiments, the clock can provide an optical timing signal. In some embodiments, the clock can provide a jitter-free electrical signal derived from the clock by use of a high speed photodetector.
摘要:
A metal waveguide is coupled to a dielectric waveguide to obtain transmission of light in a plasmon mode along an edge of the metal waveguide. Efficient, broadband light transmission is obtained, achieving a low insertion loss, using standard processing tools. An efficient integrated optical circuit is obtained.
摘要:
All-optical processing devices that include patterned optically active polymers. The devices that are constructed according to principles of the invention include at least one optical input port and at least one optical output port, respectively configured to accept optical input signals and provide optical output signals. The devices include optically active material such as organic polymers that interact with illumination at a first wavelength to change at least one optical property in a non-linear manner. The optically active polymer can be placed adjacent one or more waveguides that allow the input illumination to propagate. As the optical property of the optically active material is changed by the incident illumination, the propagating illumination undergoes a modulation or change in phase, thereby providing an optical output signal having a desired relation to the optical input signal, such as the result of a logical or a computational operation.
摘要:
Radiation detection systems and methods. In one approach, optical radiation can be detected by using the radiation to be detected as input to a high index contrast waveguide modulator that modulates a wavelength of light that falls within the detection band of a detector. In another approach, the optical radiation that is to be detected is combined with a high power CW boost mode signal in a waveguide, and the sum and/or difference frequencies are detected. In either approach, one can use grating couplers to couple the optical radiation of interest into a waveguide.
摘要:
An all-optical XOR logic gate. In one embodiment, a single photon absorption medium is used to provide enhanced optical response of a gate to an applied optical signal. The apparatus described uses at least two gate inputs and an optical modulation structure such as a Mach-Zehnder interferometer to perform logical XOR operations on an optical input signal using the gate inputs. The result of the XOR operation is provided as information in an optical output signal representative of the result of the XOR operation impressed on the optical input signal.
摘要:
A single-photon absorption all-optical modulator, systems employing the same, and methods of making and using the same. An illustrative example is provided based on silicon semiconductor technology that employs rectangular waveguides. In some embodiments, it is observed that the waveguides operate with an absorption density of less than 1017 cm−1s−1mW−1 to provide a single-photon absorption operation mode.
摘要:
A single-photon absorption all-optical modulator, systems employing the same, and methods of making and using the same. An illustrative example is provided based on silicon semiconductor technology that employs rectangular waveguides. In some embodiments, it is observed that the waveguides operate with an absorption density of less than 1017 cm−1s−1mW−1 to provide a single-photon absorption operation mode.
摘要:
Methods and devices for low power optical detection and modulation in a slotted waveguide geometry filled with nonlinear electro-optic polymers are shown. Direct conversion of optical energy to electrical energy is enabled without external bias, via optical rectification, also enhancing electro-optic modulation.
摘要:
An integrated photonic beam steering device includes a planar photonic substrate. An input waveguide is configured to accept an electromagnetic energy from a source of electromagnetic energy radiation. A first splitter is configured to split the electromagnetic radiation into one or more paths. One or more phased array rows are optically coupled to each of the one or more paths. Each phased array row includes a row splitter configured to split the each of the one or more paths into two or more row paths. Two or more phase modulators are each optically coupled respectively to each of the two or more row paths. Two or more output couplers are optically coupled respectively to each phase modulator output of the two or more phase modulators. The two or more output couplers are configured to radiate a steered photonic beam away from the integrated photonic beam steering device.