Wavelength division multiplexing or demultiplexing optical device
A wavelength division multiplexing and demultiplexing technology, which is applied in the field of optical communication, can solve problems such as low reliability, high precision requirements for coupling and packaging, and large volume, and achieve the effects of difficulty in simplification, small size, and high integration
Pending Publication Date: 2021-02-02
SHANGHAI HONGHUI OPTICS COMM TECH
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However, these products have disadvantages such as large size, low reliability, and high precision requirements for coupling packaging.
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[0022] The present invention will be further described below in conjunction with accompanying drawing.
[0023] see Figure 1-3 , the wavelength division multiplexing or demultiplexing optical device of the present invention includes a planar optical waveguide chip 3, and the planar optical waveguide chip 3 includes: an input end waveguide 1, an output end waveguide 5, a plurality of thin film filters 6, and a cutting groove 7 , In-chip optical waveguide 4 and flip structure.
[0024] The input waveguide 1 is provided with an optical input port. The waveguide 5 at the output end is provided with multiple optical output ports. Each thin-film filter 6 is used to transmit light of a corresponding specific wavelength and reflect light of other wavelengths. Cutting grooves 7 are provided in the planar optical waveguide chip 3 for fixing each thin film filter 6, the integrity of the chip is not damaged, and the reliability is guaranteed. The intra-chip optical waveguide 4 is arr...
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The invention discloses a wavelength division multiplexing or demultiplexing optical device which comprises a planar optical waveguide chip which comprises an input end waveguide provided with an optical input port; an output end waveguide provided with a plurality of light output ports; aplurality of thin film filters which are respectively used for transmitting the corresponding light with the specific wavelength and reflecting the light with other wavelengths; cutting grooves which are formed in the planar optical waveguide chip and are used for fixing the film filters; an in-chip optical waveguide which is arranged in the planar optical waveguide chip and is used for transmitting the light reflected by each film filter; a turnover structure which is arranged in the planar optical waveguide chip and is used for turning over the optical path of the optical waveguide in the chip. The device has the characteristics of small size, high integration level and simplicity in packaging.
Description
technical field [0001] The invention relates to the technical field of optical communication, in particular to an optical device for wavelength division multiplexing or demultiplexing combined with a planar optical waveguide and a film filter. Background technique [0002] Wavelength division multiplexing technology couples multiple signals into a single optical fiber (multiplexing), and separates multiple signals in a single optical fiber according to different optical paths (demultiplexing), thereby greatly increasing the communication bandwidth of the optical fiber. Thin-film wavelength division multiplexers are widely used in current wavelength division multiplexing systems due to their excellent characteristics such as low loss, flat passband, and temperature insensitivity. There are many ways to implement thin-film wavelength division multiplexers, and the common ones are three-port cascaded filters and compact thin-film filters. However, these products have disadvant...
Claims
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IPC IPC(8): G02B6/12
CPCG02B6/12007G02B2006/12109G02B2006/12164
Inventor 夏翔沈杰李雪峰黄惠良
Owner SHANGHAI HONGHUI OPTICS COMM TECH