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Thermal tuning DFB LASER

A DFB laser, thermal tuning technology, applied in the laser field, can solve the problem of high cost

Pending Publication Date: 2021-04-27
宁波元芯光电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] This kind of existing laser completely controls the temperature of the DFB laser module through the TEC, and then adjusts the output wavelength, resulting in high manufacturing and working costs.

Method used

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  • Thermal tuning DFB LASER
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  • Thermal tuning DFB LASER

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Embodiment Construction

[0025] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions.

[0026] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial", The orientation or positional relationship indicated by "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the referred device or element must have a particular orientation, be constructed, and operate in a particular orientatio...

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PUM

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Abstract

The invention discloses a thermal tuning DFB laser. The laser comprises an active area and a reflection area, the active area and the reflection area respectively comprise a waveguide structure, the active area further comprises a first electrode used for inputting driving current, the laser further comprises a temperature adjusting device which is capable of conducting heat to the waveguide structures and is used for adjusting the working temperature of the laser, the temperature adjusting device comprises a resistance wire and second electrodes arranged at the two ends of the resistance wire, and the resistance wire extends between the active area and the reflection area. Compared with the prior art, the laser has the advantages that: the working temperature of the laser can be adjusted by arranging the thermode-type temperature adjusting device and adjusting the current applied to thermodes, half temperature control is achieved, and the requirement for low cost is met; and an insulating layer is arranged below the thermodes, so that the heating efficiency is high.

Description

technical field [0001] The invention relates to laser technology, especially a thermally tuned DFB laser. Background technique [0002] A laser is a device that emits laser light. With the development of optical fiber communication systems and fiber grating technologies, due to the advantages of simple fabrication, narrow line width, anti-electromagnetic interference, and high stability, fiber grating lasers have been extensively studied and developed rapidly. In order to overcome the spatial hole-burning effect of the gain medium and achieve single-mode operation, one of the solutions is a ring fiber laser, and the other is a linear fiber grating laser. Among them, for linear fiber grating lasers, DBR (distributed Bragg reflector) and DFB (distributed feedback) lasers are more and more widely used due to their simple structure and low cost while maintaining high-quality laser output. [0003] The two-stage DFB laser commonly used in DFB lasers is divided into an active ar...

Claims

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Application Information

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IPC IPC(8): H01S5/06H01S5/12H01S5/024
CPCH01S5/1228H01S5/0612H01S5/02453H01S5/02461
Inventor 严家林
Owner 宁波元芯光电子科技有限公司
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