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Apparatus and method for controlling the lasing wavelength of a tunable laser, and wavelength division multiplexed passive optical network comprising same

A technology for tuning lasers and wavelength division multiplexers, which is applied in the field of wavelength division multiplexing passive optical networks, can solve the problems of being difficult to achieve economical efficiency and large human resources, so as to save professional human resources and time, and prevent performance degradation Effect

Active Publication Date: 2012-11-07
KOREA ADVANCED INST OF SCI & TECH
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Problems solved by technology

However, the disadvantage of this manual method or using a look-up table is that it is difficult to implement cost-effectively because it requires a lot of specialized human resources and a lot of time

Method used

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  • Apparatus and method for controlling the lasing wavelength of a tunable laser, and wavelength division multiplexed passive optical network comprising same
  • Apparatus and method for controlling the lasing wavelength of a tunable laser, and wavelength division multiplexed passive optical network comprising same
  • Apparatus and method for controlling the lasing wavelength of a tunable laser, and wavelength division multiplexed passive optical network comprising same

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Embodiment Construction

[0029] Hereinafter, the present invention will be described in more detail with reference to embodiments of the present invention and accompanying drawings.

[0030] figure 1 A method for controlling the lasing wavelength of a tunable laser to be compatible with a wavelength division multiplexer / decoder by using a backscattered or reflected light component produced by a single-mode fiber is shown for explaining the first embodiment of the present invention. Schematic block diagram of the structure of the multiplexer to match the transmission wavelength of the device and its operation.

[0031] refer to figure 1 , the device for controlling the lasing wavelength of a tunable laser according to the first embodiment of the present invention includes: a wavelength division multiplexer / demultiplexer (WD MUX / DE-MUX); a single-mode fiber (SMF), connected to WD MUX / DE-MUX; tunable laser (TL), used to output the first light to WD MUX / DE-MUX; optical coupler (OC), set between WD MUX / D...

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Abstract

The present invention relates to an apparatus and method for controlling the lasing wavelength of a tunable laser, and to a wavelength division multiplexed passive optical network comprising same. The apparatus and method for controlling the lasing wavelength of tunable laser, and a wavelength division multiplexed passive optical network comprising same, involve controlling the lasing wavelength of tunable laser such that the lasing wavelength can automatically correspond to the transmission wavelength of a wavelength division multiplexer / demultiplexer using Rayleigh backscattering occurring in an optical fiber or the optical power characteristics or optical beating components obtained from reflected optical components, thereby improving the performance of the wavelength division multiplexed passive optical network.

Description

technical field [0001] The present invention relates to a device and method for controlling the lasing wavelength of a tunable laser and a wavelength division multiplexing passive optical network with the device. More specifically, the present invention relates to an apparatus and method for controlling the lasing wavelength of a tunable laser, and a wavelength division multiplexing passive optical network having the apparatus, which is obtained by using the Rayleigh backward direction generated on an optical fiber Scatter or reflect light, etc., to match the lasing wavelength of the tunable laser with the transmission wavelength of the wavelength division multiplexer / demultiplexer, thereby preventing the wavelength between the transmission wavelengths of the wavelength division multiplexer / demultiplexer Optical power loss and poor performance due to mismatch. Background technique [0002] With the rapid development of the Internet, the well-known services oriented to voice...

Claims

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Application Information

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IPC IPC(8): H04B10/13H04B10/2581H04B10/572
CPCH04B10/572H04B10/506H04J14/0282H01S5/0656H04J14/0213
Inventor 李昌熹文常禄吴尚珉
Owner KOREA ADVANCED INST OF SCI & TECH
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