Heatless AWG preparation method based on curved array waveguide grating

Abstract

The invention relates to a heatless AWG preparation method based on a curved array waveguide grating. The method comprises the following steps: using at least one input waveguide, input planar waveguide, array waveguide and output planar waveguide and N-numbered output waveguides to form a curved AWG chip; bonding and solidifying the curved AWG chip on an interlayer; performing coupling and debugging with the input waveguide and output waveguide of the curved AWG chip, solidifying; cutting into two parts, namely a first AWG chip and a second AWG chip; cementing the second AWG chip with a substrate; arranging the first and second AWG chips in parallel along the parting line direction; adjusting the central wavelength of the curved AWG chip to be ITUT wavelength, separately solidifying compensation rods on the first AWG chip and the substrate; and taking the prepared heatless AWG from the jig. The temperature compensation structure prepared by the method of the invention can overcome changes of the optical performance caused by the deformation of the chip and the performance stability of elements are increased; and the structure is simple, the operation is convenient, and the method of the invention is applicable to industrial production.

Description

technical field [0001] The invention relates to a heatless AWG manufacturing method. In particular, it relates to an athermal AWG manufacturing method based on a curved arrayed waveguide grating, which can reduce optical index changes caused by chip deformation, improve wavelength stability, and does not require an external power supply. Background technique [0002] Arrayed waveguide grating (AWG) is an important optical device based on planar optical waveguide integration technology. With the change of market demand and the advancement of technology, AWG has begun to transition from heating type to heatless type, that is, AWG does not need to be heated when working, which is called heatless AWG (AAWG). AAWG saves the complicated temperature control circuit and heater, reduces the cost and enhances the stability of the device. It is a pure passive device; it saves the energy consumption of the communication system and has a wider range of applications. [0003] At present...

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Problems solved by technology

[0003] At present, the demand for AAWG is growing rapidly. One is the rapid development of WDM passive optical network (WDM-PON). It does not meet the application requirements of outdoor WDM-PON systems, so the system may use a large number of athermal AWGs to provide more than 100M fiber-to-the-home services

The second reason is the rapid development of reconfigurable optical add-drop multiplexer (ROADM) and variable optical attenuation multiplexer (VMUX) in metropolitan area network. Heat can cause problems such as lowering of the barrier, which also requires the use of AAWG

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