2022 Modern Application of Optoelectronic Technology(南京邮电大学) 最新满分章节测试答案

本答案对应课程为:点我自动跳转查看
本课程起止时间为:2022-02-22到2022-06-15

1 Introduction and Background Chapter 1 Test

1、 问题:The intensity of light can be calculated by
选项：
A:
B:
C:
D:
答案: 【】

2、 问题:Which statement of dielectric mirrors is not true 
选项：
A:Reflectance increases with N, the number of double layers used
B:Reflectance and bandwidth  increases with the refractive index ratio n1/n2
C:The high-low layers cannot be interchanged
D:It can be considered as 1D photonic crystal
答案: 【The high-low layers cannot be interchanged 】

3、 问题:What is the condition for single-mode planar waveguide?
选项：
A:
B:
C:
D:
答案: 【】

4、 问题:Typical optoelectronic process includes
选项：
A: Light generation
B:Light transmission
C:Light modulation
D:Light detection
答案: 【 Light generation;
Light transmission;
Light modulation;
Light detection】

5、 问题:What are the source of dispersion in single mode optical fibers?
选项：
A:Materials dispersion
B:Waveguide dispersion
C:Chromatic dispersion
D:Polarization dispersion
答案: 【Materials dispersion;
Waveguide dispersion;
Chromatic dispersion;
Polarization dispersion】

6、 问题:The fundamental mode in step index optical fiber is LP00?
选项：
A:正确
B:错误
答案: 【错误】

7、 问题:___are the study and application of __ devices and systems that source, detect and control _____.
答案: 【(以下答案任选其一都对)Optoelectronics, electronic, photon;
Optoelectronics, electronic, light】

8、 问题:The two operation principles of photonic crystal fibers are ___ and _______.
答案: 【total internal reflection, photonic bandgap】

9、 问题:The propagation modes in waveguide can be classified in terms of ____(TE) mode and ______(TM) mode?
答案: 【transverse electric field, transverse magnetic field】

10、 问题:What are the four typical layers of optical fibers? __,___,__,_____.
答案: 【core, cladding, protective polymeric coating, buffer tube】

【作业】1 Introduction and Background Chapter 1 Homework

1、 问题:Please decribe three optoelectronic devices we use every day
评分规则: 【 open discussion
】

2、 问题:Please discuss what is light
评分规则: 【 Open discussion
】

3、 问题:Please discuss what is photonic metamaterial
评分规则: 【 Open discussion
】

2 Light Generation Chapter 2 Test

1、 问题:According Mass action law of semiconductors, which statement is not true 
选项：
A:is true in all semiconductors
B: is true in intrinsic semiconductor
C:and in nondegenerate semiconductor
D:for n type semiconductor
答案: 【is true in all semiconductors】

2、 问题:The internal quantum efficiency of laser can be calculated by 
选项：
A:
B:
C:
D:
答案: 【】

3、 问题:Which statement is not true in semiconductors?
选项：
A:Density of states is the number of electron states per unit energy per unit volume
B:Fermi-Dirac function is the probability of finding an electron in a quantum state
C:Electron-hole recombination happens all the time in the semiconductors
D:A doping concentration of is nondegenerate
答案: 【A doping concentration of is nondegenerate】

4、 问题:Common heterojunction can be classified as
选项：
A:Straddling gap
B:Offset gap
C:Staggered gap
D:Broken gap
答案: 【Straddling gap;
Offset gap;
Broken gap】

5、 问题:Which of the following factors affect the LED output spectrum？
选项：
A:Semiconductor bandgap
B:Operation temperature
C:Doping concentration
D:Applied voltage/current
答案: 【Semiconductor bandgap;
Operation temperature;
Doping concentration;
Applied voltage/current】

6、 问题:The optical cavity can be made with spherical mirror to obtain different laser modes
选项：
A:正确
B:错误
答案: 【正确】

7、 问题:The optical transition in silicon devices is usually indirect
选项：
A:正确
B:错误
答案: 【正确】

8、 问题:The lattice constant of AlGaAs alloy follows nonlinear mixing rule
选项：
A:正确
B:错误
答案: 【错误】

9、 问题:In the space charge region, a high doping concentration results a short depletion width
选项：
A:正确
B:错误
答案: 【正确】

10、 问题:Write the bandgap (300k) of silicon _ eV, Germanium _ eV, GaAs__eV, GaN____eV
答案: 【1.11,0.66,1.43,3.4】

【作业】2 Light Generation Chapter 2 Homework

1、 问题:Discuss the working principle of a GaAs/AlGaAs heterostructure for LED application
评分规则: 【 Open discussion
】

2、 问题:Describe the light absorption and emission process for indirect bandgap materials
评分规则: 【 Open discussion
】

3、 问题:Discuss the working principle of a semiconductor laser and the advantages of heterojunction in laser applications.
评分规则: 【 Open discussion
】

【作业】3 Light Detection and Energy Conversion Chapter 3 Homework

1、 问题:Discuss two operation modes of photodetectors
评分规则: 【 Open discussion
】

2、 问题:Name two types of photodetectors and their features
评分规则: 【 Open discussion
】

3、 问题:Discuss the noise in photodetector and how to evaluate the performance of photodetectors