MX2023000730A - Dispositivo de autocalibración y método para sesgo de tiempo en fase y cuadratura y conjugación en un transmisor coherente. - Google Patents

Dispositivo de autocalibración y método para sesgo de tiempo en fase y cuadratura y conjugación en un transmisor coherente.

Info

Publication number
MX2023000730A
MX2023000730A MX2023000730A MX2023000730A MX2023000730A MX 2023000730 A MX2023000730 A MX 2023000730A MX 2023000730 A MX2023000730 A MX 2023000730A MX 2023000730 A MX2023000730 A MX 2023000730A MX 2023000730 A MX2023000730 A MX 2023000730A
Authority
MX
Mexico
Prior art keywords
time skew
transmitter
conjugation
data signal
pilot tone
Prior art date
Application number
MX2023000730A
Other languages
English (en)
Inventor
Xuefeng Tang
Zhuhong Zhang
Qiang Jin
Wing Chau Ng
si Ouyang
Original Assignee
Huawei Tech Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Tech Co Ltd filed Critical Huawei Tech Co Ltd
Publication of MX2023000730A publication Critical patent/MX2023000730A/es

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/0016—Arrangements for synchronising receiver with transmitter correction of synchronization errors
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/50—Transmitters
    • H04B10/501—Structural aspects
    • H04B10/503—Laser transmitters
    • H04B10/505—Laser transmitters using external modulation
    • H04B10/5057—Laser transmitters using external modulation using a feedback signal generated by analysing the optical output
    • H04B10/50575—Laser transmitters using external modulation using a feedback signal generated by analysing the optical output to control the modulator DC bias
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
    • H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/50—Transmitters
    • H04B10/501—Structural aspects
    • H04B10/503—Laser transmitters
    • H04B10/505—Laser transmitters using external modulation
    • H04B10/5057—Laser transmitters using external modulation using a feedback signal generated by analysing the optical output
    • H04B10/50577—Laser transmitters using external modulation using a feedback signal generated by analysing the optical output to control the phase of the modulating signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/50—Transmitters
    • H04B10/516—Details of coding or modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2210/00—Indexing scheme relating to optical transmission systems
    • H04B2210/07—Monitoring an optical transmission system using a supervisory signal
    • H04B2210/075—Monitoring an optical transmission system using a supervisory signal using a pilot tone

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Electromagnetism (AREA)
  • Optics & Photonics (AREA)
  • Optical Communication System (AREA)

Abstract

Se describen métodos y dispositivos para calibración y compensación de conjugación y sesgo de tiempo IQ de un transmisor o transceptor coherente. Un tono piloto se combina con una señal de datos digital de manera que las potencias relativas del tono piloto en cada una de dos bandas de frecuencia de la señal de datos transmitida se pueden detectar por un detector de tonos piloto y usar para calcular el sesgo de tiempo entre los canales de modulación I y Q del transmisor. Un DSP transmisor aplica desviación de sesgo de tiempo IQ a la señal de datos para compensar cualquier sesgo de tiempo IQ calculado. El detector de tonos piloto también proporciona al DSP transmisor la información necesaria para detectar la conjugación de fase de la señal óptica, que se puede corregir al invertir la polaridad de la señal de datos o cambiando el punto de desviación de fase del modulador óptico.
MX2023000730A 2020-07-15 2020-07-15 Dispositivo de autocalibración y método para sesgo de tiempo en fase y cuadratura y conjugación en un transmisor coherente. MX2023000730A (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2020/102183 WO2022011613A1 (en) 2020-07-15 2020-07-15 Self-calibrating device and method for in-phase and quadrature time skew and conjugation in a coherent transmitter

Publications (1)

Publication Number Publication Date
MX2023000730A true MX2023000730A (es) 2023-04-14

Family

ID=79555962

Family Applications (1)

Application Number Title Priority Date Filing Date
MX2023000730A MX2023000730A (es) 2020-07-15 2020-07-15 Dispositivo de autocalibración y método para sesgo de tiempo en fase y cuadratura y conjugación en un transmisor coherente.

Country Status (5)

Country Link
US (1) US20220368512A1 (es)
EP (1) EP4173169A4 (es)
CN (1) CN116210174A (es)
MX (1) MX2023000730A (es)
WO (1) WO2022011613A1 (es)

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012105081A1 (ja) * 2011-02-01 2012-08-09 日本電気株式会社 コヒーレント光受信器、コヒーレント光受信器におけるチャネル間スキュー検出装置および検出方法
US8565621B2 (en) * 2011-03-01 2013-10-22 Opnext Subsystems, Inc. Quadrature time skew detection for coherent optical signals
US8428183B2 (en) * 2011-04-01 2013-04-23 Opnext Subsystems, Inc. In-phase and quadrature pattern alignment for quadrature phase shift keying optical transmitters
US8644420B2 (en) * 2011-04-01 2014-02-04 Opnext Subsystems, Inc. Alignment of in-phase and quadrature data in quadrature phase shift keying optical transmitters
US9749057B2 (en) * 2012-12-28 2017-08-29 Juniper Networks, Inc. Detection and alignment of XY skew
US9184834B1 (en) * 2012-12-28 2015-11-10 Juniper Networks, Inc. Method and apparatus for detection and correction of time skew in an optical transmitter
EP2930865B1 (en) * 2014-04-07 2018-06-06 Alcatel Lucent Transmitter quadrature imbalance compensation at a coherent optical receiver
EP3128685B1 (en) * 2015-08-03 2020-07-22 Juniper Networks, Inc. Detection and alignment of xy skew
US10038498B1 (en) * 2015-09-04 2018-07-31 Inphi Corporation Apparatus and methods for timing tone based transmitter skew alignment in an optical communication system
US9705592B1 (en) 2016-04-05 2017-07-11 Infinera Corporation In-service skew monitoring in a nested Mach-Zehnder modulator structure using pilot signals and balanced phase detection
US11063620B2 (en) * 2016-05-31 2021-07-13 Apple Inc. Digital pre-emphasis quadrature imbalance compensating filter
US10574362B2 (en) * 2018-04-23 2020-02-25 Infinera Corporation Method and apparatus for transmitter IQ skew and insertion loss detection for coherent optical systems
US10547408B2 (en) * 2018-05-03 2020-01-28 Juniper Networks, Inc. Methods and apparatus for improving the skew tolerance of a coherent optical transponder in an optical communication system
US11108462B2 (en) * 2018-09-17 2021-08-31 Cable Television Laboratories, Inc. Systems and methods for skew detection and pre-compensation in a coherent optical system
CN112930676A (zh) * 2018-11-06 2021-06-08 奥林巴斯株式会社 摄像装置、内窥镜装置及摄像装置的工作方法

Also Published As

Publication number Publication date
US20220368512A1 (en) 2022-11-17
WO2022011613A1 (en) 2022-01-20
EP4173169A4 (en) 2023-08-16
CN116210174A (zh) 2023-06-02
EP4173169A1 (en) 2023-05-03

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