A high-speed optical signal generating device and control method thereof

A technology for generating devices and optical signals, applied in the field of optical communication, to achieve the effect of continuous central wavelength

Active Publication Date: 2022-03-04
FENGHUO COMM SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the above defects or improvement needs of the prior art, the present invention provides a high-speed optical signal generating device and its control method, the purpose of which is to realize one laser input, 2N+1 equally spaced multi-wavelength outputs, frequency interval, center The wavelength is continuously adjustable, which is both flexible and low-cost compared to the traditional solution, so as to solve how to provide a frequency-locked multi-wavelength light source in a low-cost way, avoiding the use of wavelength-sensitive optical filters to separate multiple wavelengths Modulation, the technical problem of realizing flexible and continuous adjustment of central wavelength and channel spacing

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  • A high-speed optical signal generating device and control method thereof
  • A high-speed optical signal generating device and control method thereof
  • A high-speed optical signal generating device and control method thereof

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Embodiment 1

[0075] This embodiment provides a high-speed optical signal generating device, refer to figure 1 , the high-speed optical signal generating device includes: a tunable laser 1 , a wavelength multiplier 2 , a driver-modulator array 3 , a baseband signal generator 4 and a main controller 5 .

[0076] Wherein, the optical output end of the tunable laser 1 is connected to the optical input end of the wavelength multiplier 2, and the optical output end of the wavelength multiplier 2 is connected to the optical input end of the driver-modulator array 3, The electrical input of the driver-modulator array 3 is connected to the output of the baseband signal generator 4 . Wherein, the output optical power of the tunable laser 1 is not less than 15 dBm.

[0077] The control terminal of the wavelength multiplier 2 , the control terminal of the driver-modulator array 3 and the control terminal of the baseband signal generator 4 are respectively connected to the main controller 5 .

[0078...

Embodiment 2

[0122] Based on the high-speed optical signal generating device of the foregoing embodiment 1, this embodiment provides a control method of the high-speed optical signal generating device, through which the high-speed optical signal generating device is adjusted to output desired signals.

[0123] refer to Figure 8 , the control method of the high-speed optical signal generating device of the present embodiment includes the following steps:

[0124] Step 101: Drive the wavelength multiplier to convert the single-wavelength optical carrier generated by the tunable laser into 2N+1 optical carriers that are equally spaced and frequency-locked, and read the optical power P of the 2N+1 optical carrier 2N+1 .

[0125] Step 102: sequentially control the i-th wavelength bidirectional shifter, respectively obtain the optical power P2i of the 2i-th optical carrier and the optical power P2i-1 of the 2i-1-th optical carrier, according to the optical power P2i and the The relative magni...

Embodiment 3

[0138] to combine Figure 9 , to specifically illustrate the specific implementation process of the control method in the foregoing embodiment 2.

[0139] S1: Read setting parameters.

[0140] Wherein, the setting parameters include central wavelength, wavelength interval fs, number of wavelength channels 2N+1 and baud rate.

[0141] Wherein, the central wavelength may be 1550.12 nm, and the wavelength interval fs=50 GHz.

[0142] S2: Set the central wavelength and optical power of the tunable laser, turn on the tunable laser, set the delay of the optical path matcher to the pre-calibrated value, and read the optical power P corresponding to the 2N+1 optical carrier 2N+1 , set i=1.

[0143] S3: Turn on the optical amplifier in the 1st to N wavelength bidirectional shifter, and set the configuration parameters of 1 to N wavelength bidirectional shifter;

[0144] Wherein, the default gain of the optical amplifier in the first to N wavelength bidirectional shifters is set to ...

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Abstract

The invention discloses a high-speed optical signal generating device and its control method. The high-speed optical signal generating device includes an adjustable laser, a wavelength multiplier, a driver-modulator array, a baseband signal generator and a main controller; the adjustable laser The optical output end is connected to the optical input end of the wavelength multiplier, the optical output end of the wavelength multiplier is connected to the optical input end of the driver-modulator array, and the electrical input end of the driver-modulator array is connected to the output end of the baseband signal generator ; The control end of the wavelength multiplier, the control end of the driver-modulator array and the control end of the baseband signal generator are respectively connected to the main controller. In the present invention, a wavelength bidirectional shifter is used to generate two frequency-locked wavelengths at the same time, and N parallel wavelength bidirectional shifters are combined to allow them to work at different driving frequencies to realize one laser input and 2N+1 equally spaced Multi-wavelength output, frequency interval, center wavelength continuously adjustable.

Description

technical field [0001] The invention belongs to the technical field of optical communication, and more specifically relates to a high-speed optical signal generating device and a control method thereof. Background technique [0002] With the rise of new infrastructure such as 5G networks and cloud data centers, a large number of bandwidth-intensive applications will continue to emerge and become popular, such as VR / AR, cloud computing, telemedicine, video conferencing, etc., and network traffic will increase exponentially. The annual compound growth rate is as high as 26%, which undoubtedly puts forward higher requirements for the transmission rate and capacity of the optical fiber bearer network. [0003] In terms of short-distance applications, in recent years, the interface rate of the server in the optical interconnection scenario of the data center is at least 50G / 100G, the rate of the top of rack switch (Top of Rack, abbreviated as TOR) reaches 100G / 200G, and the leaf ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/50H04B10/572H04B10/516
CPCH04B10/506H04B10/503H04B10/572H04B10/516
Inventor 冯振华
Owner FENGHUO COMM SCI & TECH CO LTD
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