Unlock instant, AI-driven research and patent intelligence for your innovation.

Optical splitter including a trident structure

A spectroscope, optical signal technology, applied in the direction of light guide, optics, instruments, etc., can solve the problems of large thermal-optical effect of Si, large refractive index difference, uneven thickness of Si layer, etc., and achieve the effect of low loss and small size

Active Publication Date: 2020-12-04
HUAWEI TECH CO LTD
View PDF10 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, purely passive silicon waveguide devices still have limited performance in terms of insertion loss, phase noise (resulting in channel crosstalk), and temperature dependence
This is because silicon dioxide (SiO 2 ) The refractive index difference between the cladding layer and the silicon (Si) core is large, the thickness of the Si layer is not uniform, and the thermo-optic effect of Si is large

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Optical splitter including a trident structure
  • Optical splitter including a trident structure
  • Optical splitter including a trident structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0050] figure 1 The optical splitter 100 provided by the embodiment of the present invention is shown. Optical splitter 100 is used to split multi-mode signal 102 into two single-mode signals 104 .

[0051] To this end, the optical splitter 100 includes a tapered first waveguide 101 for receiving the multimode optical signal 102 at the base (i.e. its wider end) of the multimode optical signal 102, and specifically towards the top (i.e. its wider end) of the multimode optical signal 102. narrow end) propagates the multimode signal 102. Furthermore, the optical splitter 100 includes two tapered second waveguides 103 arranged in parallel on different sides of the first waveguide 101 . The taper of each second waveguide 103 is opposite to the taper of the first waveguide 101 . In addition, each second waveguide 103 is used to propagate a single-mode signal 104, specifically from its top to its base, and output a single-mode optical signal 104 at its base (ie, its wider end). ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
refractive indexaaaaaaaaaa
Login to View More

Abstract

The invention discloses an optical splitter (100) for particularly silicon photonics. The optical splitter (100) is configured to split a multimode signal(102) adiabatically into two single mode signals (104). The optical splitter (100) comprises a tapered first waveguide (101) configured to receive the multimode signal (102) at its base and propagate the multimode signal (102). Further, the optical splitter (100) comprises two tapered second waveguides (103) arranged in parallel on different sides of the first waveguide (101). Each second waveguide (103) is tapered oppositely to the first waveguide (101) and is configured to propagate a single mode signal (104) and output the single mode optical signal (104) at its base. The first waveguide (101) and the two second waveguides (103) form atrident structure. The optical splitter (100), by means of the trident structure, is configured to adiabatically split the multimode signal (102) propagating in the first waveguide (101) towards itstip into two single mode signals (104) propagating in the second waveguides (103) towards their bases.

Description

technical field [0001] The present invention relates to a beam splitter, a polarization splitter and rotator (PSR) and a wave combiner. The PSR and multiplexer include an optical splitter, which specifically includes a trident structure, and the trident structure includes a tapered first waveguide and two oppositely tapered second waveguides arranged beside the first waveguide. The invention is particularly applicable to the field of silicon photonics. Background technique [0002] As an emerging technology, silicon photonics is increasingly important as a general-purpose platform for a wide range of applications such as telecommunications, data communications, interconnection, and sensing. The described technology allows photonic functions to be implemented on high-quality, low-cost silicon substrates using Complementary Metal-Oxide-Semiconductor (CMOS) compatible wafer-level technology. However, purely passive silicon waveguide devices still have limited performance in t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/24
CPCG02B6/1223G02B6/1228G02B6/126G02B2006/12116G02B2006/1215G02B2006/12152G02B2006/12164
Inventor 佩德罗·达马斯马科·兰波尼
Owner HUAWEI TECH CO LTD