Long distance high power optical laser fiber break detection and continuity monitoring systems and methods

CC Rinzler, WC Gray, BO Faircloth… - US Patent …, 2016 - Google Patents
A monitoring and detection system for use on high power laser systems, long distance high
power laser systems and tools for performing high power laser operations. In particular, the …

Optical signal transmitter, and bias voltage control method

H Kawakami, E Yoshida, M Tachibana - US Patent 9,020,361, 2015 - Google Patents
An optical signal transmitter of the present invention includes: two phase modulating
portions; a phase shifter which displaces carrier phases of two output lights from the phase …

Method and system for an optical connection service interface

G Masini, J Balardeta, S Denton - US Patent 9,467,227, 2016 - Google Patents
Methods and systems for an optical connection service interface may include, in an optical
data link comprising an optical fiber, a local control system, first and second transceivers at …

Optical transmitter and DC bias control method

T Sugihara, T Yoshida - US Patent 9,641,257, 2017 - Google Patents
An optical transmitter for modulating light from a light OO Source to generate an optical
transmission signal with use of (65) Prior Publication Data a data sequence as an electric …

Mach-Zehnder modulator bias control for arbitrary waveform generation

Q Guo, J Wang, F Zhu - US Patent 9,281,898, 2016 - Google Patents
(57) ABSTRACT A method comprising applying an In-phase (I) offset to an I component of
an orthogonal pseudo-random coded direct current (DC) bias signal, applying a Quadrature …

Optical transmitter and control method of optical transmitter

K Enoki, Y Shimakura, E Yagyu, H Shintaku… - US Patent …, 2017 - Google Patents
An optical modulation unit included in an optical transmitter includes two optical modulators
that modulate each of two light beams based on applied bias voltages and input modulation …

Light modulation device and light modulation method

M Yoneyama, H Kawakami, T Ono, A Matsuura… - US Patent …, 2018 - Google Patents
A light modulation device detects a power of the modulated optical signal modulated by
each of an I-component optical modulator and a Q-component optical modulator …

Optical transmitter and bias control method of optical modulator

Y Akiyama - US Patent 9,350,455, 2016 - Google Patents
An optical transmitter includes: a drive signal generator con figured to generate a drive
signal from input data; an optical modulator configured to generate an optical signal corre …

Method and system for the monolithic integration of circuits for monitoring and control of RF signals

SB Krasulick, T Creazzo, K Jha, E Marchena… - US Patent …, 2016 - Google Patents
A method of operating a BPSK modulator includes receiving an RF signal at the BPSK
modulator and splitting the RF signal into a first portion and a second portion that is inverted …

System and method for monitoring and control of an optical modulator for an M-QAM transmitter

I Kim, O Vassilieva, P Palacharla, M Sekiya - US Patent 9,344,194, 2016 - Google Patents
A system includes an optical power meter operable to generate an optical power signal
corresponding to the optical power of a received output signal generated by an optical IQ …