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A low-loss glass-ceramic planar optical waveguide and its preparation method

A technology of planar optical waveguide and glass ceramics, which is applied in the direction of optical waveguide and light guide, can solve the problems of reducing optical efficiency, and achieve the effects of reducing production cost, not demanding preparation time schedule, and high output and yield

Active Publication Date: 2022-03-11
XINYI XIYI ADVANCED MATERIALS RES INST OF IND TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When optical pumping is performed, some losses will inevitably occur in the optical waveguide. These losses come from light refraction, etc., thus reducing its optical efficiency.

Method used

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  • A low-loss glass-ceramic planar optical waveguide and its preparation method
  • A low-loss glass-ceramic planar optical waveguide and its preparation method
  • A low-loss glass-ceramic planar optical waveguide and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Example 1: SiO 2 –30mol%SnO 2 :0.5Er 3+

[0015] Weigh SnCl with a purity greater than 99.9% according to the stoichiometric ratio 2 , Er(NO 3 ) 3 , citric acid and tetraethyl orthosilicate (TEOS) as raw materials. SnCl 2 , Er(NO 3 ) 3 , TEOS and citric acid were mixed, the molar ratio of citric acid to metal ions was 1:0.5, then deionized water with a volume fraction of 50% of the mixture was added, and stirred at 200 rpm for 16 hours to obtain a sol. The solution was filtered using a 200 nm filter and the collected fraction was used for dip coating. Commercially available SiO 2 Dip-coating was carried out on the glass at a immersion speed of 7 cm / min, and a total of 30 deposition layers were deposited. After dip-coating, it was dried at 900° C. for 20 min. Finally, it was heated at 900°C for 3 hours to obtain a glass-ceramic planar optical waveguide.

Embodiment 2

[0016] Example 2: SiO 2 –30mol%SnO 2 :0.4Er 3+

[0017] Weigh SnCl with a purity greater than 99.9% according to the stoichiometric ratio 2 , Er(NO 3 ) 3 , citric acid and tetraethyl orthosilicate (TEOS) as raw materials. SnCl 2 , Er(NO 3 ) 3 , TEOS and citric acid were mixed, the molar ratio of citric acid to metal ions was 1:1, then deionized water with a volume fraction of 20% of the mixture was added, and stirred at 300 rpm for 10 h to obtain a sol. The solution was filtered using a 200 nm filter and the collected fraction was used for dip coating. Commercially available SiO 2 Dip-coating was carried out on the glass at a immersion speed of 7.5cm / min, a total of 20 deposition layers were deposited, and dried at 800°C for 30min after dip-coating. Finally, it was heated at 1100°C for 1 h to obtain a glass-ceramic planar optical waveguide.

Embodiment 3

[0018] Example 3: SiO 2 –30mol%SnO 2 :0.3Er 3+

[0019] Weigh SnCl with a purity greater than 99.9% according to the stoichiometric ratio 2 , Er(NO 3 ) 3 , citric acid and tetraethyl orthosilicate (TEOS) as raw materials. SnCl 2 , Er(NO 3 ) 3 , TEOS and citric acid were mixed, the molar ratio of citric acid to metal ions was 1:0.75, then deionized water with a volume fraction of 40% of the mixture was added, and stirred at 280 rpm for 12 hours to obtain a sol. The solution was filtered using a 200 nm filter and the collected fraction was used for dip coating. Commercially available SiO 2 Dip-coating was carried out on the glass at a immersion speed of 7 cm / min, and a total of 25 deposition layers were deposited. After dip-coating, it was dried at 850° C. for 26 min. Finally, it was heated at 1000°C for 2 hours to obtain a glass-ceramic planar optical waveguide.

[0020] Taking embodiment 1 as an example, by figure 1 The XRD pattern shows that, by comparison with t...

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Abstract

A low-loss glass ceramic planar optical waveguide and a preparation method thereof belong to the technical field of preparation and application of planar optical waveguides. The prepared glass-ceramic planar optical waveguide satisfies the composition of SiO 2 –30mol%SnO 2 :xEr 3+ , where, 0.3≤x≤0.5, prepared by sol-gel method and dip-coating technique, SnO 2 Er 3+ The hindered non-radiative relaxation process reduces the loss, and the propagation loss at 1542 nm is as low as 0.6dB / cm. The preparation method provided by the invention has simple process, stable product performance and is suitable for industrialized production.

Description

technical field [0001] The invention provides a low-loss glass ceramic planar optical waveguide and a preparation method thereof, belonging to the technical field of preparation and application of planar optical waveguides. Background technique [0002] Glass-ceramics are two-phase materials composed of glass embedded in nanocrystals. When the nanocrystals are activated by light-emitting ions such as transition metal ions and rare earth ions, photonic glass ceramics are obtained. Compared with optical glasses and crystals, the advantage of photonic glass ceramics comes from their combination of the optical properties of glass with the spectral properties of crystals, which is the advantage of glass ceramics in photonic applications compared to glass, single crystal and sintered transparent ceramics The advantages. Therefore, people have conducted more and more in-depth research on the application of glass ceramics in photonics, especially in integrated optics. Notably, th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B6/10
CPCG02B6/10
Inventor 张乐甄方正康健陈东顺申冰磊赵超罗泽陈浩
Owner XINYI XIYI ADVANCED MATERIALS RES INST OF IND TECH CO LTD
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