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

Silicon-based tunable filter, laser and optical module

A filter and laser technology, which is applied in the field of optical communication, can solve problems affecting laser adjustment and stability, and achieve low power consumption, convenient adjustment, and good stability

Pending Publication Date: 2022-01-07
INNOLIGHT TECHNOLOGY (SUZHOU) LTD
View PDF6 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the spectrum of the microring resonator is easily affected by the manufacturing process and the surrounding environment, and a small change in the radius can cause a large change in the spectrum of the double microring, which is easy to affect the adjustment and stability of the laser.

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
  • Silicon-based tunable filter, laser and optical module
  • Silicon-based tunable filter, laser and optical module
  • Silicon-based tunable filter, laser and optical module

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] Such as figure 2As shown, the tunable laser of the present application includes a semiconductor optical amplifier (Semiconductor Optical Amplifer, SOA) 100 and a silicon optical integrated chip 200, where the semiconductor optical amplifier 100 is a reflective semiconductor optical amplifier (Reflective Semiconductor Optical Amplifer, RSOA), Usually, it is a gain chip made of III-V material, and the RSOA achieves high-efficiency coupling with the external cavity provided on the silicon optical integrated chip 200 through a coupler to form an external cavity tunable laser. The above-mentioned silicon photonics integrated chip 200 is provided with a first coupler 10, a phase adjuster 20 and a tunable filter. The semiconductor optical amplifier 100 has opposite first end faces and second end faces. The second end face of the semiconductor optical amplifier 100 passes through the second end face. A coupler 10 is coupled with the silicon photonics integrated chip 200, and t...

Embodiment 2

[0083] Such as Figure 12 As shown, the difference from Embodiment 1 is that in this embodiment a ring mirror 90 is used as the partial reflection end of the laser external cavity, and the 1×2 coupler and the first optical splitter in Embodiment 1 are omitted. Here, the loop mirror 90 includes a 2×2 coupler 91 disposed on the silicon photonics integrated chip 200 and a ring waveguide 92 connecting two ports on one side of the 2×2 coupler 91, and the 2×2 coupler 91 is another The two ports on one side are an input port 911 and an output port 912 respectively, and the output port 912 is used as a laser output port for outputting laser light. That is, one end face of the reflective semiconductor optical amplifier 100 constitutes the reflective end face of the laser resonator, and the ring mirror 90 formed by the 2×2 coupler 91 and the ring waveguide 92 constitutes a part of the reflective end face of the laser resonator. Here, the ring waveguide 92 refers to a waveguide that con...

Embodiment 3

[0089] Such as Figure 14 As shown, the difference from Embodiment 1 or 2 is that in this embodiment, the reflective semiconductor optical amplifier 100 is connected to the first coupler on the silicon optical integrated chip 200 through a photonic wire bonding (Photonic Wire Bonding, PWB) 300 10 optical connections. Such as Figure 15 As shown, during assembly, the semiconductor optical amplifier 100 and the silicon photonics integrated chip 200 are installed on a substrate 400. Due to differences in chip thickness and waveguide positions, it is difficult to align the semiconductor optical amplifier 100 and the silicon photonics integrated chip 200. Bonding 300 for optical connection has relatively low requirements on the assembly position and alignment accuracy of the reflective semiconductor optical amplifier 100 and the silicon optical integrated chip 200, which reduces the difficulty of assembling the reflective semiconductor optical amplifier 100 and the silicon optical...

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

No PUM Login to View More

Abstract

The invention provides a silicon-based adjustable filter, a laser and an optical module. The adjustable laser comprises a semiconductor optical amplifier and a silicon optical integrated chip, and the silicon optical integrated chip is provided with a first coupler, a phase regulator and an adjustable filter; the adjustable filter comprises a flat-topped band-pass filtering structure, a Mach-Zehnder interference structure MZI and a micro-ring resonance structure MRR which are cascaded; gain light emitted by the semiconductor optical amplifier is coupled to the silicon optical integrated chip through the first coupler, and narrow-band filtering optical signals are output through the adjustable filter; and the phase of the gain light is adjusted through a phase adjuster so as to output tunable single-peak narrow-band laser with the target wavelength. The single-micro-ring resonant structure based on silicon optical integration is combined with the Mach-Zehnder interference structure and the band-pass filtering structure to realize single-peak narrow-band filtering, so that high integration level, low power consumption and small size are ensured, and meanwhile, the silicon-based adjustable filter has the advantages of convenience in adjustment, good stability and the like.

Description

technical field [0001] The present application relates to the technical field of optical communication, in particular to a silicon-based tunable filter, a laser and an optical module. Background technique [0002] Tunable lasers are key devices in optical communication systems and play an important role in applications such as wavelength division multiplexing, wavelength routing, and coherent optical communication. External cavity tunable lasers are widely used in coherent optical communication systems due to their advantages such as narrow linewidth, good side-mode suppression ratio, and wide wavelength tuning range. [0003] With the development of high-speed Internet and data centers, higher requirements are placed on the integration of equipment, and new requirements are placed on the integration, size and power consumption of optical modules. Silicon photonics integrated chips are the first choice for optical modules because they are compatible with CMOS processes, can...

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): G02F1/21G02F1/225
CPCG02F1/21G02F1/218G02F1/2257G02F1/225H01S5/021H01S5/141H01S3/107H01S3/08027H01S3/106H01S3/1055G02B6/29353G02B6/29355H01S5/0265H01S5/1007H01S5/1071H01S5/142H01S5/50
Inventor 郭德汾李显尧涂文凯刘俊林天华孙雨舟
Owner INNOLIGHT TECHNOLOGY (SUZHOU) LTD