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Monolithic integration Y wave guide connected two-laser optoelectronic device

An optoelectronic device and monolithic integration technology, which is applied in the coupling of laser components, lasers, and optical waveguides, can solve problems that affect wide application, and achieve the effects of reducing phase noise, reducing impact, and increasing branch angles

Inactive Publication Date: 2010-08-11
INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using two independent lasers with similar wavelengths to generate microwave signals with heterodyne beat frequency is a simple way to realize ROF, but the wide application of this technology is seriously affected due to the influence of the external environment on the two independent lasers and the existence of laser phase noise.

Method used

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  • Monolithic integration Y wave guide connected two-laser optoelectronic device
  • Monolithic integration Y wave guide connected two-laser optoelectronic device

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Embodiment Construction

[0020] Please refer to shown in Fig. 1, a kind of monolithic integrated Y waveguide of the present invention connects two laser optoelectronic devices, including:

[0021] The two lasers 1 are parallel lasers with similar wavelengths; the two lasers 1 are monolithically integrated lasers, and the two lasers 1 are distributed feedback lasers or distributed Bragg reflection lasers; the two lasers 1 are grown on the same substrate in parallel. The ridge widths of the lasers 1 are different; by controlling the lateral spacing between the two lasers 1, the two lasers have a lateral coupling effect, producing dual-wavelength continuous light with a stable phase relationship, and reducing the influence of temperature on device stability ;

[0022] A waveguide 2, the waveguide 2 is Y-shaped, divided into a first end 21, a second end 22 and a third end 23, and the two lasers 1 are respectively connected to the second end 22 and the third end 23 of the waveguide 2; The branch angle of ...

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Abstract

The invention provides photoelectronic devices of two monolithically integrated lasers which are connected with Y-shaped waveguide. The device is characterized in that the device comprises two lasers, a waveguide, a direct waveguide and a fazotron; wherein the two lasers parallel to each other and have similar wave length; the waveguide is Y shaped and has a first end, a second end and a third end; the two lasers are respectively connected with the second end and the third end of the waveguide; the direct waveguide is connected with the first end of the waveguide; the fazotron is formed at the bottom part of the branch of the Y-shaped waveguide; the output light of the two lasers is guided into a section of the direct waveguide for output by the Y-shaped waveguide and then can be coupled into the outside fiber.

Description

technical field [0001] The invention relates to an optoelectronic device of two lasers connected by monolithic integrated Y waveguide for optical communication, which is used to generate microwave signals with extremely high frequency and continuously adjustable low phase noise. Background technique [0002] The use of optical signals to propagate microwave and millimeter wave technology has the advantages of wide bandwidth, low loss, and insusceptibility to external electromagnetic wave interference. Using optical signals to transmit high-frequency carrier communication information (Radio over Fiber, ROF) is used in remote antennas, microwave Optical fiber connections, phased array antennas, and millimeter wave signal transmission in wireless communications. Using two independent lasers with similar wavelengths to generate microwave signals with heterodyne beat frequency is a convenient way to realize ROF. However, due to the influence of the external environment and the ex...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B6/42H01S3/00
Inventor 张红广张雅丽谢亮袁海庆王欣朱洪亮祝宁华
Owner INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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