A waveguide, demultiplexer, and waveguide manufacturing method

Abstract

The invention discloses a waveguide, a demultiplexer, and a waveguide manufacturing method. The waveguide comprises a substrate, an upper cladding layer, a lower cladding layer, a waveguide core layer, and a polymer. The lower cladding layer is disposed on the substrate, and the waveguide core layer is disposed on the lower cladding layer. The upper cladding layer is disposed on the lower claddinglayer and the waveguide core layer. Deep trenches are disposed at the positions of the upper and lower cladding layers between waveguide cores in the waveguide core layer. The polymer is disposed inthe deep trenches. The refractive index of the polymer is less than the refractive index of the upper cladding layer. The deep trenches are disposed between waveguide cores in the waveguide core layer, and the polymer with the refractive index being less than the refractive index of the upper cladding layer is disposed in the deep trenches, thereby blocking or weakening the optical crosstalk between the adjacent channels, avoiding the interference of signals between channels, and improving the quality of signals of a receiving terminal.

Description

technical field [0001] The invention relates to the technical field of optical communication, in particular to a waveguide, a demultiplexer and a manufacturing method of the waveguide. Background technique [0002] With the completion of 40 / 100 Gigabit Ethernet (GbE) optical interface standard (IEEE802.3ba-2010) and pluggable optical transceiver module standard (CFP-MAS Rev 1.4), and the first generation of 40GbE / 100GbE CFP products Gradually entering the market, manufacturers are gradually shifting their attention to the R&D and design of 40 / 100GbE pluggable transceivers. For system manufacturers and customers, module power consumption and size are the key indicators to increase system port density and reduce the cost of the entire optical port, so it has become the primary goal of R&D and design, and the monolithic integrated waveguide solution is the mainstream implementation solution. [0003] At present, the technology of mixing and integrating PIN-PD and TIA arrays wi...

AI Technical Summary

Problems solved by technology

[0004] The present invention solves the technical problem in the prior art that light leakage between the output waveguides easily causes signal crosstalk between channels by providing a waveguide, a demultiplexer and a waveguide manufacturing method, and realizes the technology of improving the quality of received signals Effect

Images