Inventor

CHEN YOUNG-KAI

US72 patents

⚠️ This page may combine multiple inventors who share the name “CHEN YOUNG-KAI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

CHEN YOUNG-KAI

LUCENT TECHNOLOGIES INC

Communication system comprising an active-antenna repeater

Linear power amplifier with automatic gate/base bias control for optimum efficiency

Fast adaptive wideband power amplifier feed forward linearizer using a RLS parameter tracking algorithm

Joint maximum likelihood sequence estimator with dynamic channel description

Optical digital-to-analog converter and method of optically converting digital data to analog form

High speed modulation of optical subcarriers

Optical digital-to-analog converter

Method and apparatus for enhancing transmitter circuit efficiency of mobile radio units by selectable switching of power amplifier

Optical fiber communications system with adaptive data equalizer

Latch chain having improved sensitivity

Analog modulation of optical signals

Adaptive joint linearization, equalization and delay alignment for a wideband power amplifier

Low-complexity adaptive controller

Bipolar transistors with vertical structures

Low noise transistor module and amplifier

Transistors and methods for making the same

ALCATEL LUCENT USA INC

Wafer-level testing of optical circuit devices

Coherent phase-shift-keying

Technique for photonic analog-to-digital signal conversion

Quadrature amplitude modulation of optical carriers

Programmable optical array

Adaptive optical equalization for chromatic and/or polarization mode dispersion compensation and joint opto-electronic equalizer architecture

Reconfigurable optical networks

Monlithically coupled waveguide and phototransistor

Transimpedance amplifier with distributed control of feedback line

Feedforward decision-free pilot-aided phase noise estimation for coherent optical M-QAM systems

Hybrid semiconductor lasers

Self-Calibrating integrated photonic circuit and method of control thereof

Reconfigurable athermal optical filters

Optical beamforming transmitter

Optical heterodyne receiver and method of extracting data from a phase-modulated input optical signal

AT & T BELL LAB

Method of making a semiconductor laser

Apparatus comprising a laser adapted for emission of single mode radiation having low transverse divergence

Apparatus comprising optical pulse-generating means

Method of making an article comprising a periodic heteroepitaxial semiconductor structure

Heterostructure bipolar transistor

Article comprising a strained layer quantum well laser

CHEN YOUNG-KAI

Multiple-input method and apparatus of free-space optical communication

Frequency estimation in an intradyne optical receiver

ALCATEL LUCENT

CMOS-compatible tunable microwave photonic band-stop filter

Balanced optical signal processor

CHEN LONG

Low loss broadband fiber coupler to optical waveguide

BERNASCONI PIETRO A G

Vertical optically emitting photonic devices with electronic steering capability

CHEN YOUNG KAI

Optical device and method for optical frequency modulation to optical amplitude modulation conversion

AGERE SYST GUARDIAN CORP

Method of making an article comprising an oxide layer on a GaAs-based semiconductor body

TU KUN-YII

Photonic technique for generating arbitrary waveforms

BAEYENS YVES

Optoelectronic receiver

LGS Innovations LLC

Multiple-input method and apparatus of free-space optical communication

NOKIA SOLUTIONS & NETWORKS OY

Single mode grating coupler with vertical coupling direction and small back reflection

NOKIA AMERICA CORP

System and method for polarization multiplexed optical communications