Nanyang Technological University

Columbia University

Guozhen Liang

Qijie Wang

Michal Lipson

Nanfang Yu

Bo Meng

Xiaonan Hu

Heqing Huang

The systems described herein can be used to modulate either the phase, the amplitude, or both of an input light wave using micro-resonators to achieve desired degrees and/or types of modulation.

Amplitude and phase light modulator based on miniature optical resonators

According to embodiments of the present invention, an optical modulator is provided. The optical modulator includes a substrate, and a waveguiding arrangement on the substrate, the waveguiding arrangement having a waveguide, and at least one graphene layer arranged to interact with light propagating in the waveguiding arrangement, wherein the waveguide is designed such that the light interacting with the at least one graphene layer has a maximum intensity overlapping with the at least one graphene layer. According to further embodiments of the present invention, a method for forming the optical modulator, and a method for controlling the optical modulator are also provided.

Optical modulator, method for forming the same, and method for controlling the same

Embodiments provide a light source having a coherent light generator arrangement configured to generate at least one output light, and a waveguide arrangement optically coupled to the coherent light generator arrangement, the waveguide arrangement including at least one first resonator element and at least one second resonator element arranged in different orientations, wherein the waveguide arrangement is configured to interact with the at least one output light to cause the at least one first resonator element and the at least one second resonator element to emit respective first and second optical signals to co-operatively interact with each other to generate an output optical signal, and wherein the light source is configured to change a polarization characteristic of the output optical signal in response to at least one electrical signal applied to the light source to vary at least one of respective magnitudes of the first and second optical signals relative to each other.

Light source and method for controlling the same

According to various embodiments, there is provided a layer arrangement including a graphene layer; a gating electrode layer configured to provide a tuning voltage to the graphene layer; a laser layer configured to provide an electromagnetic wave; and a concentric-circular grating layer configured to couple the electromagnetic wave to the graphene layer.

Growing community of inventors

Singapore, Singapore

Guozhen Liang