Heatless array wave guide grating based on stress compensation
A technology of waveguide grating and stress compensation, which is applied in the field of optical communication devices, can solve the problems of being rarely used, difficult to control reliability and repeatability, and many manufacturing processes of bimetallic stress plates.
Active Publication Date: 2008-01-09
GUANGXUN SCI & TECH WUHAN
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Problems solved by technology
Therefore, there are too many manufacturing processes for bimetallic stress plates in this method, and the reliability and repeatability are difficult to control, which is not conducive to mass production.
[0005] There are other plans, which are limited to a small number of literature reports, and are rarely adopted due to the difficulty of making them.
Method used
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Embodiment 2
[0039] The metal plate is an aluminum plate with a thickness of 1mm, a length and a width of 50mm and 25mm respectively, and a paste temperature of 120 degrees.
Embodiment 3
[0041]The metal plate is an iron plate with a thickness of 1 mm and a length and width of 50 mm and 25 mm respectively, pasted at 120 degrees. The graph of the variation of wavelength with temperature in the embodiment of the iron plate is shown in Figure 4.
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Abstract
A heat - free array wave-guide gating consists of AWG chip and metal plate stuck on said chip. It features that metal plate is single - layer metal plate, thermal expansion coefficient of metal plate is greater than thermal expansion coefficient of backing silicon, single - layer metal plate is stuck on AWG chip under temperature being greater than environmental temperature of AWG chip operation.
Description
technical field [0001] The invention belongs to optical communication devices. Background technique [0002] Optical Dense Wavelength Division Multiplexing (DWDM) system has become the main scheme of optical fiber network construction in countries all over the world including China. The multiplexer and demultiplexer are the key devices in the DWDM system. The devices that can perform this function mainly include arrayed waveguide grating (AWG), thin-film optical filter and fiber grating. Judging from the current market, technology and cost, AWG occupies an absolute dominant position in DWDM systems with more than 16 channels, and thin-film optical filters occupy the market below 16 channels. [0003] The International Telecommunication Union (ITUI) stipulates the wavelength of the optical fiber communication system, so the wavelength of the optical signal of each channel of the AWG must be consistent with the wavelength specified by the ITUI. The AWG based on the planar op...
Claims
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IPC IPC(8): G02B6/34G02B6/10
Inventor 赵秀丽刘文
Owner GUANGXUN SCI & TECH WUHAN