公开(公告)号：US20190379451A1

公开(公告)日：2019-12-12

申请号：US16433079

申请日：2019-06-06

Applicant: ADVA OPTICAL NETWORKING SE

Inventor： Michael EISELT

IPC: H04B10/071 ,  H04B10/25 ,  H04L1/00 ,  H04L7/00

Abstract: The invention relates to a method of determining a time-of-flight of an optical signal between a starting point and a reflection point of an optical path, comprising: supplying to the path at least one optical probing signal; detecting an electrical return signal according to an optical return signal returning from the path in response to a corresponding one of the probing signals using direct detection; deriving at least one receive code sequence by sampling and slicing the return signal using a sampling rate corresponding to a bit rate of a sequence of pulses of the probing signal; determining a correlation function by correlating the transmit code sequence and the at least one receive code sequence; and identifying a main peak of the correlation function that corresponds to the reflection point and a time position of the peak, and determining the time-of-flight as the time position of the peak.

公开(公告)号：US20130251364A1

公开(公告)日：2013-09-26

申请号：US13828130

申请日：2013-03-14

Applicant: ADVA OPTICAL NETWORKING SE

Inventor： Stephan PACHNICKE ,  Michael EISELT ,  Markus ROPPELT ,  Mirko LAWIN ,  Klaus GROBE ,  Jörg-Peter ELBERS

IPC: H04J14/02

CPC classification number: H04J14/0227 ,  H04J14/0276

Abstract: An optical transmission system method including generating for a tunable laser a pilot tone having an adjustable pilot tone frequency identifying a wavelength division multiplexing channel used by the tunable laser; multiplying the pilot tone with pilot tone data to provide a pilot tone data signal; supplying the pilot tone data signal and a high frequency data signal to the tunable laser generating an optical laser signal output by the tunable laser responsive to the supplied signals; transporting the optical laser signal to a central wavelength to locker; converting the received optical laser signal to provide a pilot tone data signal for wavelength division multiplexing channels demodulated to detect the pilot tone and the pilot tone data for each individual wavelength division multiplexing channel; and identifying the wavelength division multiplexing channel on the basis of the pilot tone frequency of the detected pilot tone and evaluating the pilot tone data.

Abstract translation: 一种光传输系统方法，包括为可调谐激光器生成具有标识可调谐激光器使用的波分复用信道的可调导频音频率的导频音; 将导频音与导频音数据相乘以提供导频音数据信号; 向所述可调谐激光器提供导频音数据信号和高频数据信号，以响应于所提供的信号产生由可调谐激光器输出的光学激光信号; 将光学激光信号传输到中心波长至储物柜; 转换所接收的光学激光信号以提供用于波分多路复用通道的导频音数据信号，所述导频音数据信号被解调以检测每个单独的波分复用通道的导频音和导频音数据; 以及基于检测到的导频音调的导频音频率识别波分复用信道，并评估导频音数据。