A tunable laser

A technology for tuning lasers and optical beam splitters, which is applied to lasers, laser components, phonon exciters, etc., can solve the problems of limited adjustment range of tunable lasers and low device adjustment efficiency, and is conducive to large-scale integration, Improved thermal regulation efficiency and stable output laser wavelength

Active Publication Date: 2020-02-11
WUHAN POST & TELECOMM RES INST CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In the prior art, the adjustment range of the tunable laser is limited, and the adjustment efficiency of the device is low

Method used

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  • A tunable laser
  • A tunable laser
  • A tunable laser

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Embodiment Construction

[0034] In order to make the present invention easier to understand, the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that these examples are for illustrative purposes only, and are not intended to limit the present invention.

[0035] like figure 1 and figure 2 As shown, some embodiments of the present invention provide a tunable laser comprising:

[0036] Silicon substrate 21, its length, width and height directions are respectively defined as the I direction, the II direction and the III direction; and formed on the silicon substrate 21:

[0037] Optical input port 701, which is used for the input of light waves;

[0038] The first optical waveguide 101, which is used for the coupling-in of light waves from the optical input port 701;

[0039] A photonic crystal cavity 201, which is used to select and adjust the resonance wavelength of the optical wave coupled in throu...

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Abstract

The invention discloses a tunable laser, and relates to the field of optical communication devices. The tunable laser includes a silicon substrate, wherein the length direction, width direction and height direction of the silicon substrate are respectively defined as a first direction, a second direction, and a third direction; an optical input port, a first optical waveguide, a photonic crystal cavity, a second optical waveguide, an optical beam splitter, an optical emission port, an optical output port and an optical gain assembly which are formed on the silicon substrate. The optical inputport and the optical output port are connected through an optical fiber link to form a loop, and the optical gain assembly is arranged on the loop. According to the tunable laser, electrodes are respectively arranged at the two sides of a photonic crystal cavity in the second direction, or electrodes are arranged above the photonic crystal cavity in the third direction. The tunable laser providedby the invention is high in adjustment efficiency, large in tuning range, stable in output wavelength, small in structural size and beneficial to large-scale integration.

Description

technical field [0001] The invention relates to the field of optical communication devices, in particular to a tunable laser. Background technique [0002] The on-chip integrated tunable laser has the advantage of continuously tunable laser wavelength, so it has become a key component in many applications, especially in Passive Optical Network (PON). In a wavelength division multiplexing system (Wavelength Division Multiplex, WDM), the larger the output wavelength range of the laser, it means that more channels can be used to transmit signals, thereby increasing the transmission rate of information. For example, a single trunk fiber carries optical signals of multiple channel wavelengths to and from an optical branch point, and the branch point provides a simple routing function by guiding signals of different wavelengths to or from individual users. At each subscriber location, the optical network terminal is assigned one or more channel wavelengths for transmitting and / or...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01S3/139H01S3/105H01S3/13H01S3/10
CPCH01S3/10007H01S3/105H01S3/1301H01S3/139
Inventor 张宇光王磊胡晓陈代高李淼峰冯朋肖希余少华
Owner WUHAN POST & TELECOMM RES INST CO LTD
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