Stevens Institute of Technology

Yong Meng Sua

Yuping Huang

Jiayang Chen

Lac Thi Thanh Nguyen

Jeevanandha Ramanathan

Mingwei Jin

Jiuyi Zhang

Amin Shahverdi

A spectroscope using single-photon counters and a chip-integrated lithium niobate micro-ring filter to measure the atmospheric CO2 absorption spectrum passively is disclosed. By thermo-optically sweeping the filter over 150 pm and referencing the resulting photon counts to a bypass channel, the absorption spectrum can be sampled at an ultrahigh-resolution of 6 pm. The spectroscope can be a part of a ground-based field system, wherein the CO2 absorption through the atmosphere can be characterized by counting the solar photons across the absorption line around 1572.02 nm, which agrees well with its transmission spectrum at standard atmospheric pressure.

System and methods for gas spectroscopic sensing with photon counting and tunable integrated photonic filters

Approaches, apparatuses and methods for LIDAR applications based on mode-selective frequency conversion are disclosed. In one embodiment, a pulse generation unit includes a mode-locked fiber laser and optical fiber bandpass filters. In the second embodiment, a LIDAR transceiver unit based on a simple, bidirectional monostatic coaxial arrangement using off-the-shelf telecom-grade optical components includes optical fiber, fiber collimator, optical fiber circulator, optical fiber isolator and wavelength combiner. A frequency conversion detection system with single photon sensitivity includes a nonlinear optical material for frequency conversion, coupled with optimized pump pulses for efficient conversion and noise rejection, optical band pass filters for noise rejection and a single photon detection system for detecting the converted signal.

Approaches, apparatuses and methods for LIDAR applications based on-mode-selective frequency conversion

An electro-optic modulation structure, a method for fabrication of the electro-optic modulation structure, and a method of optical modulation derived from an electro-optic modulation structure with low voltage of operation are disclosed. The low voltage operation of the electro-optic modulator is realized by designed electro-optic modulation structures that include the light confining waveguide, overclad layerand modulating electrode structurefor applying modulation voltages that are directed towards a low voltage operation of the electro-optic modulationdevice upon consideration of optimal optical loss.

Devices and methods for low voltage optical modulation

A device for generation of genuine random numbers, uses quantum stochastic processes in optical parametric nonlinear media. The dimensionality of the random numbers is varied from 2 to over 100,000. Their statistical properties, including the correlation function amongst random numbers, are tailored using linear and nonlinear optical circuits following the parametric nonlinear media. Both the generation and manipulation of random numbers are integrated on a single nanophotonics chip. By incorporating optoelectric effects, fast streams of random numbers are created in custom statistical properties, which are updated or reconfigured in real time, such as at 10 GHz speed. The unpredictability of the random numbers is quantifying by evaluating their min-entropy. The genuineness of quantum random numbers is tested using both statistical tools and independently verified by measuring the quantum entanglement between the photons in real time.

Growing community of inventors

Fort Lee, NJ, United States of America

Yong Meng Sua