LEOS Summer Topical Meeting
SCOPUS (1991-1992,1994-2009,2021,2023)
1099-4742
Mỹ
Cơ quản chủ quản: Institute of Electrical and Electronics Engineers Inc.
Lĩnh vực:
Electrical and Electronic EngineeringAtomic and Molecular Physics, and Optics
Phân tích ảnh hưởng
Các bài báo tiêu biểu
2/spl times/2 all-optical exchange-bypass switch
- Trang TuC3-TuC3
We demonstrate an optically addressable 2/spl times/2 exchange-bypass switch operating with 10 Gbps data packets. Switching is achieved in an optical amplifier gate and the performance of the device is independent of packet length and content.
#Optical packet switching #Optical switches #Ultrafast optics #Optical interferometry #Pulse modulation #Nonlinear optics #Optical pulse generation #Stimulated emission #Optical fiber polarization #Optical variables control
Metro network with reconfigurable optical add-drop module
- Trang TuF3-TuF3
We simulated a metro amplification node with reconfigurable optical add-drop module (ROADM) and a 6-node metro ring based on the amplifier. Network performances with three types of ROADM are evaluated.
#Optical fiber networks #Erbium-doped fiber amplifier #Wavelength division multiplexing #Stimulated emission #Equalizers #Signal to noise ratio #Optical noise #Optical pumping #Optical waveguides #Channel spacing
Polarization mode dispersion and its mitigation in optical networks
- Trang TuN2-TuN2
PMD effects impose severe penalties on older fiber plants at 10Gb/s and on virtually all plants at 40Gb/s. An optical compensator can mitigate these penalties, allowing error-free performance without severely limiting the regenerator distances. A repeatable, calibrated PMD emulator allows thorough testing of a polarisation mode dispersion compensator (PMDC) and the calculation of outage probabilit......
#Polarization mode dispersion #Intelligent networks #Optical fiber networks #Optical fiber polarization #Optical distortion #Optical receivers #Optical fiber devices #Optical fiber testing #Signal to noise ratio #Optical noise
16-channel VCSEL based multiple chip modules
- Trang MH4-MH4
Summary form only given. We designed and fabricated the hybrid integrated CMOS-VCSEL multiple chip modules. The VCSEL operate at 850nm wavelength. A typical VCSEL has a threshold current of 4 mA, and quantum efficiency of 0.3 mW/mA. Operating at 8 mA modulation current, the VCSEL 3-dB modulation bandwidth was measured more than 5 GHz.
#Vertical cavity surface emitting lasers #Surface emitting lasers #Semiconductor device measurement #Integrated circuit measurements #Optical surface waves #Laser modes #Threshold current #Optical interconnections #Bandwidth #Frequency measurement
Microcavity effects on spontaneous emission factor in 1.55/spl mu/m VCSELs
- Trang WG3-WG3
The ratio of spontaneous emission in the resonant mode of a laser to the total spontaneous emission is commonly known as the spontaneous emission factor. This factor is used in the rate equation analysis to characterise the spectral and dynamic behaviour of semiconductor lasers. In this present study, we combine the material temperature effects with temperature dependent cavity effects.
#Microcavities #Spontaneous emission #Vertical cavity surface emitting lasers #Laser modes #Semiconductor lasers #Temperature dependence #Resonance #Equations #Optical materials #Semiconductor materials
Fast processes in semiconductor optical amplifiers: Theory and experiment
- Trang TuK3-TuK3
We review the physical processes responsible for ultrafast gain and index dynamics in semiconductor optical amplifiers and discuss their impact on optical switching applications.
#Semiconductor optical amplifiers #Optical wavelength conversion #Optical interferometry #Stimulated emission #Optical pumping #Optical refraction #Optical saturation #Optical variables control #Optical waveguides #Optical amplifiers
1.3 micron InGaAsN oxide-confined VCSELs grown by MOCVD
- Trang TuH3-TuH3
Summary form only given. An Emcore D 180 metalorganic chemical vapor deposition (MOCVD) system was used to develop 1.3 micron InGaAsN/GaAs vertical cavity surface emitting lasers (VCSELs). The InGaAsN VCSELs are dry etched to form a 42 micron mesa that is subsequently wet oxidized to form apertures ranging from 6.0 to 8.5 microns. The quasi-single mode laser was modulated with a pseudorandom bit s......
#Vertical cavity surface emitting lasers #MOCVD #Chemical lasers #Laser modes #Surface emitting lasers #Chemical vapor deposition #Gallium arsenide #Dry etching #Wet etching #Apertures
The need for dynamic control in high data-rate communication systems
- Trang WE2-WE2
High data rate optical communication systems will require dynamic control to maintain low error rates for operational systems. The transmission impairments that lead to variable system performance are polarization effects, dispersion, noise, and optical nonlinearity. The polarization effects include polarization dependent loss (PDL), polarization mode dispersion (PMD), and polarization dependent g......
#Communication system control #Control systems #Optical polarization #Nonlinear dynamical systems #Optical variables control #Optical fiber communication #System performance #Polarization mode dispersion #Optical noise #Optical control
Challenges in deploying an all-optical mesh network
- Trang MG2-MG2
Driven by operations and capital cost savings mesh networks with intelligent switching systems interconnecting point-to-point WDM systems with transponders are being deployed today. There is a potential for further cost savings by eliminating optical-to-electrical conversion at the intermediate nodes. However, that introduces significant challenges in terms of intelligent network functions and fle......
#Intelligent networks #Mesh networks #Optical signal processing #Wavelength division multiplexing #High speed optical techniques #Costs #Optical wavelength conversion #All-optical networks #Transponders #Optical fiber networks
Current status of epitaxial 1.31-1.55 /spl mu/m VCSELs on InP
- Trang WG1-WG1
We have reviewed the recent research carried out to realize all-epitaxial VCSELs at long wavelengths. Shortcomings of the InP materials system were overcome by the use of AsSb-based alloys for DBRs and multiple active regions to combat low gain materials. The inclusion of InP spreading layers was seen to greatly improve the thermal properties of the devices. Two apertures were developed for the op......
#Vertical cavity surface emitting lasers #Indium phosphide #Mirrors #Apertures #Thermal conductivity #Lattices #Distributed Bragg reflectors #Optical modulation #Bandwidth #Temperature