All-fiber high-speed photoelectric detector impulse response measuring device and method
A photodetector and impulse response technology, applied in the direction of testing optical performance, can solve problems such as optical alignment, system complexity, bandwidth limitation, etc., to achieve the effect of convenient measurement, simple measurement system, and large test bandwidth
Pending Publication Date: 2022-07-05
BEIJING INST OF RADIO METROLOGY & MEASUREMENT
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] This application proposes a device and method for measuring the impulse response of an all-fiber high-speed photodetector, which is used to solve the problem that the traditional electro-optical sampling space optical system requires optical alignment, the system is complex and unstable, and the sampling oscilloscope measures the impulse response of a high-speed photodetector. There is a problem with bandwidth limitations
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0026] In order to make the objectives, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be clearly and completely described below with reference to the specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.
[0027] The technical solutions provided by the embodiments of the present application will be described in detail below with reference to the accompanying drawings.
[0028] figure 1 It is a schematic diagram of the connection of the impulse response measurement device of the all-fiber high-speed photodetector.
[0029] An all-f...
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
| Property | Measurement | Unit |
|---|---|---|
| wavelength | aaaaa | aaaaa |
Login to View More
Abstract
The invention discloses an all-fiber high-speed photoelectric detector impulse response measuring device and method, and the device is characterized in that the device comprises a femtosecond laser, an optical fiber polarizer, an optical fiber delay line, an optical fiber circulator, a first optical fiber polarization controller, a second optical fiber polarization controller, an electro-optical sampling head, an optical fiber polarization beam splitter, a balanced photoelectric detector, and a lock-in amplifier. After femtosecond laser beam splitting, the femtosecond laser is coupled to a photoelectric detector to generate an electric pulse signal. One beam is coupled to an optical fiber polarizer and is sent to an optical fiber delay line, a first optical fiber polarization controller and an optical fiber circulator in sequence; the electro-optical sampling head reflects polarized light from the optical fiber circulator and detects an electric pulse signal at the same time. The optical fiber polarization beam splitter is converted into an electric signal through the balance photoelectric detector, and then the electric signal is sent to the lock-in amplifier. All the devices are connected through the polarization maintaining optical fiber, the defects that a traditional electro-optical sampling space light system needs optical alignment and is complex and unstable are overcome, and the measuring system is simple, stable and high in practicability.
Description
technical field [0001] The present application relates to the technical field of photoelectric instrument measurement, and in particular, to a device and method for measuring the impulse response of an all-fiber high-speed photodetector. Background technique [0002] The photodetector is the basic photosensitive device, and the precise measurement of its impulse response can make it suitable for use according to the application requirements. With the wide application of high-speed photodetectors in optical communication, signal processing and measurement systems, the measurement requirements for its impulse response are gradually increasing, while the bandwidth of the sampling oscilloscope used in the traditional method can only reach 100GHz. Optical measurement methods measure 2-3 orders of magnitude higher than electrical measurements, with electro-optical sampling methods enabling smaller temporal resolution. The traditional electro-optical sampling system is mainly base...
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
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): G01M11/02
CPCG01M11/02G01M11/0207
Inventor 赵珞谢文龚鹏伟谌贝姜河马红梅杨春涛
Owner BEIJING INST OF RADIO METROLOGY & MEASUREMENT