Abstract Ad-hoc Social Networks are formed by groups of nodes, designating a similarity of
interests. The network establishes a two-layer hierarchical structure that comprises …

An optical filter for attenuating higher-order modes in an optical waveguide includes a
shoulder slab formed of a first material having a first index of refraction and disposed on a …

A nanophotonic device includes at least two waveguides located on top of a transparent
substrate, which form an intersection point at which a part of a first waveguide …

A waveguide mode expander couples a smaller optical mode in a semiconductor
waveguide to a larger optical mode in an optical fiber. The waveguide mode expander …

(57) ABSTRACT A high-order-mode (HOM) filter for thick silicon wave guides has a shoulder
slab, a waveguide ridge, a first filter ridge, and a second filter ridge. The first filter ridge and …

A method of fabricating a waveguide mode expander includes providing a substrate
including a waveguide, bonding a chiplet including multiple optical material layers in a …

An optical switch matrix is described herein. In one embodi ment, an exemplary optical
Switch matrix includes, but is not limited to, multiple input waveguides, multiple output …

An optical filter for attenuating higher-order modes in an optical waveguide includes a
shoulder slab formed of a first material having a first index of refraction and disposed on a …

(57) ABSTRACT A tunable laser has a first mirror, a second mirror, a gain medium, and a
directional coupler. The first mirror and the second mirror form an optical resonator. The gain …

A waveguide mode expander couples a smaller optical mode in a semiconductor
waveguide to a larger optical mode in an optical fiber. The waveguide mode expander …