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Fiber laser and control method and system

A fiber laser and light wave technology, applied in the field of communication, can solve the problems of long adjustment time and small adjustable range, and achieve the effect of short time, large adjustable range and convenient wavelength adjustment

Active Publication Date: 2014-05-21
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, in the way of existing lasers to generate optical pulses, the adjustable range of the wavelength of the optical pulse is only about 3nm, the adjustable range of the wavelength is small, and the required adjustment time is long

Method used

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  • Fiber laser and control method and system
  • Fiber laser and control method and system
  • Fiber laser and control method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] like figure 2 As shown, the present embodiment provides a fiber laser, which includes:

[0030] FPGA (Field-Programmable Gate Array, logic circuit), BLD (Burst Laser Driver, optical gain medium driver) and oscillator cavity;

[0031] Wherein, the FPGA is connected with the optical gain medium driver, and is used to obtain the first time according to the real-time temperature of the optical gain medium in the oscillation cavity and the first output power of the optical pulse to be emitted, and to control the light wave in the first time by using the BLD. The preset first wavelength oscillates in the oscillation cavity so that the light pulse reaches the first output power; when the first time is reached, the oscillation cavity is controlled by the BLD, and the wavelength obtained by the oscillation of the oscillation cavity is emitted to be the preset first output power. The wavelength and the output power are optical pulses with the first output power;

[0032] The B...

Embodiment 2

[0045] This embodiment provides a method for controlling a fiber laser. Under the control of the method, the fiber laser can generate an optical pulse with an adjustable wavelength, and the power of the optical pulse can be controlled. In this embodiment, the control of the fiber laser described in Embodiment 1 is taken as an example for illustration, and the fiber controller includes an FPGA, a BLD and an oscillation cavity.

[0046] like image 3As shown, a control method of an optical fiber controller includes the following steps:

[0047] 201. Set the wavelength of the light wave passing through the TF as the first wavelength;

[0048] Wherein, the first wavelength is the wavelength of the light pulse to be emitted, or the wavelength of the light wave passing through the TF through the FPGA.

[0049] 202. Acquire the first time according to the real-time temperature of the RSOA and the first output power of the optical pulse;

[0050] Wherein, the first time specificall...

Embodiment 3

[0076] like Figure 5 As shown, this embodiment provides a control system for a fiber laser. The fiber laser in this embodiment includes a BLD and an oscillating cavity. The system can be implemented specifically through an FPGA. The system includes:

[0077] A time acquisition module 301, configured to acquire the first time according to the real-time temperature of the optical gain medium in the oscillation cavity and the first output power of the optical pulse to be emitted;

[0078] The first control module 302 is configured to control the light wave to oscillate in the oscillation cavity at a preset first wavelength within the first time through the BLD, so that the light pulse reaches the first output power;

[0079] The second control module 303 is configured to control the oscillation cavity through the BLD to emit an optical pulse with a preset first wavelength and an output power of the first output power obtained through oscillation of the oscillation cavity when th...

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Abstract

A fiber laser, and a method and system for controlling the same relate to the communication field. First time is obtained in accordance with real-time temperature of a light gain medium and first output power of to-be-emitted light pulses. Light waves oscillate in an oscillation cavity at a preset first wavelength within the first time so that the light pulses reach the first output power and are emitted after the first time is up. Wavelength-adjustable light pulses can be generated with a wide adjustable wavelength range and can satisfy monitoring requirements of a passive optical network (PON) system. In addition, the wavelength adjustment of the light pulses is convenient and requires a short period of time.

Description

technical field [0001] The invention relates to the communication field, in particular to a fiber laser and a control method and system. Background technique [0002] With the development of PON (Passive Optical Network, Passive Optical Network), its deployment and application are becoming more and more extensive. like figure 1 As shown, it is a typical PON structure diagram, and the light waves used to carry data are transmitted from the optical distribution network to the optical network units on multiple branches. [0003] In order to ensure the transmission quality of PON and avoid the failure of optical transmission due to the failure of equipment on the PON branch line, there is a great demand for PON network monitoring at present. At the current stage, OTDR (Optical Time Domain Reflectometer, Optical Time Domain Reflectometer) is ideal for point-to-point fiber monitoring. However, since most of the PON systems are point-to-multipoint optical fiber transmission stru...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01S3/067H01S3/10
CPCH04B10/572H04B10/272H01S3/067
Inventor 湛永坚赵峻肖司淼
Owner HUAWEI TECH CO LTD
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