Patent
Optically controlled integrated optical switch
Reads0
Chats0
TLDR
In this paper, an optically controlled integrated optical switch having a body made up of entirely crystalline silicon is presented, where a pair of channel waveguides intersecting at an X-like configuration forming therein an intersection crossover region.Abstract:
An optically controlled integrated optical switch having a body made up of entirely crystalline silicon. More specifically, the body has a pair of channel waveguides intersecting at an X-like configuration forming therein an intersection crossover region. An electrically controlled optical source is positioned over the crossover region to shine intense, short wavelight on the crossover region in order to generate numerous electron-hole pairs in the waveguide material. These charge carriers alter the refractive index of the intersection region. A controllable current source is used to adjust the optical output power of the optical source. This, in turn, changes the amount of optical cross coupling of light between the intersecting waveguides.read more
Citations
More filters
Patent
Nanocomposite materials with engineered properties
TL;DR: In this paper, the authors describe a nonlinear index of refraction γ that is at least 10 −9 cm 2 /W when irradiated with light having a wavelength λ between approximately 3×10 −5 cm and 2 ×10 −4 cm.
Patent
Quantum dots of Group IV semiconductor materials
TL;DR: The quantum dot as discussed by the authors is a core including a semiconductor material Y selected from the group consisting of Si and Ge and also comprises a shell surrounding the core, which is substantially defect free such that the quantum dot exhibits photoluminescence with a quantum efficiency that is greater than 10 percent.
Patent
Optical devices with engineered nonlinear nanocomposite materials
TL;DR: In this paper, a waveguide core and a nanocomposite material optically coupled to the waveguide was described. But the authors did not specify the number of quantum dots.
Patent
Variable ration fiber optic coupler optical signal processing element
TL;DR: In this article, the index of refraction of the encapsulating material (16) is modulated by applying illumination (19) thereto, so as to vary the coupler (10) output ratio.
Patent
Methods of forming quantum dots of Group IV semiconductor materials
TL;DR: In this paper, a particle that includes a semiconductor material Y selected from the group consisting of Si and Ge is provided, and sound energy and light energy is applied, to the particle to form a quantum dot.
References
More filters
Journal ArticleDOI
Electro-optic X-switch using single-mode Ti:LiNbO3 channel waveguides
TL;DR: In this article, a new type of single-mode four-port electro-optic switch is investigated based on the electrically controlled two-mode interference in the intersection region of two crossing singlemode channel waveguides.
Journal ArticleDOI
Waveguided optical switch in InGaAs/InP using free-carrier plasma dispersion
Osamu Mikami,H. Nakagome +1 more
TL;DR: In this paper, a carrier injection plasma dispersion (CIPSP) based InGaAsP/InP four-port switches with two intersecting single-mode channel waveguides were fabricated by selective LPE and investigated at 1.5 µm wavelength.
Patent
Optical waveguiding devices using monocrystalline materials of the sillenite family of bismuth oxides
Ballman A,Tien P +1 more
TL;DR: In this paper, a light-guiding sillenite film was used as an electro-optical switch and modulator for a guided light beam, and a pair of interdigital electrodes were inserted into the glass.
Patent
Optical guided wave devices employing semiconductor-insulator structures
TL;DR: In this article, a three-dimensional optical waveguide is described, which consists of a single crystal semiconductor layer grown upon an insulator which has an index of refraction lower than the semiconductor.
Patent
Variable integrated optical logic element
TL;DR: In this paper, a variable integrated optical logic element, formed on a substrate of electro-optic material, capable of being controlled to perform the six basic logic operations AND, OR, EXCLUSIVE OR, NAND, NOR and exclusive NOR, is presented.