搜索结果: 1-15 共查到“光学工程 VCSEL”相关记录29条 . 查询时间(0.028 秒)
中国科学院微电子所在795nm窄线宽VCSEL方面取得新进展（图）
电子 激光器 耦合
2024/11/7
垂直腔面发射激光器（VCSELs）具有体积小、阈值电流低、波长随温度稳定、圆形光束和高可靠性等优点，是原子钟、原子磁力仪、原子陀螺仪等核心光源。但传统VCSEL的光谱线宽较宽，一般为50-100 MHz，无法与自然原子线宽（铯为5 MHz）匹配，限制了原子传感系统性能的进一步提升。
集成光电探测器的可调谐MEMS-VCSEL，可监测输出光功率（图）
集成 光电探测器 MEMS-VCSEL 光功率
2024/10/15
波长连续调谐（扫频）垂直腔面发射激光器（VCSEL）在光学相干层析成像（OCT）、调频连续波（FMCW）激光雷达、智能制造等领域有重要应用。在这些应用中，对可调谐VCSEL进行功率监测至关重要。此外，VCSEL具有单纵模、低功耗、易于二维阵列集成等优点，是垂直集成光子系统的理想光源。在未来用于人工智能（AI）和传感等领域的三维垂直集成光子系统中，具有宽带波长调谐和集成功率监测功能的VCSEL是关键...
中国科学院半导体研究所在可调谐MEMS-VCSEL研究方面取得进展（图）
MEMS VCSEL 调谐
2024/10/25
最近中国科学院半导体研究所郑婉华院士团队刘安金研究组在集成功率监测功能的可调谐MEMS-VCSEL研究方面取得进展。刘安金研究组在2022年采用一种新器件结构和新制作工艺实现单模MEMS-VCSEL（Photonics Research 10，1170，2022，期刊封面论文）的基础上，近期报道了一种集成PD的可调谐MEMS-VCSEL，器件结构如图1所示。在该器件中MEMS可调谐亚波...
近日，长光华芯车载激光雷达芯片产品顺利通过车规级AEC-Q102认证，加上2022年12月份通过的IATF16949质量体系认证，长光华芯已拿到进入汽车电子行业的两张通行证，是汽车厂商合规可靠的车载激光雷达芯片供应商。目前多数汽车厂商使用的零部件都要求具备AEC-Q认证，AEC-Q认证是国际通用的车规元器件产品验证标准，通过AEC-Q认证意味着产品能够应用于汽车上。
国内首款660纳米VCSEL激光芯片研发成功！（图）
VCSEL 激光芯片
2023/11/12
日前，国内首款波长660纳米垂直腔面发射激光器芯片(660VCSEL芯片）在万州研发成功并投入批量化生产，这款芯片广泛应用于激光指示、激光扫描、血氧传感、烟雾探测等领域。
日前，中国科学院长春光学精密机械与物理研究所在国内首次研制出碱金属原子光学传感技术专用的795nm和894nm 垂直腔面发射激光器（VCSEL）。该器件采用完全自主的结构设计、材料生长和芯片工艺研制而成，芯片体积仅为0.05立方毫米(0.5mmx0.5mmx0.2mm)。器件高稳定单模态激光输出高于0.2毫瓦，工作电流低于1.5毫安，功耗低于3毫瓦，工作温度超过100℃，可作为核心光源用于芯片级原...
We report error-free performance at 25Gb/s using a directly-modulated 850nm VCSEL over 100m graded-index perfluorinated plastic optical fiber with good launch offset tolerance.Bandwidth assessment of ...
Monolithic Electro-Optically Modulated VCSEL Suitable For Radio over Fibre Applications to 20 GHz
Fiber optics communications Modulators
2015/5/25
An integrated EOM VCSELs is shown to offer high linearity (92dB/Hz ⅔ at 6GHz) and by extrapolation ~90dB/Hz ⅔ up to 20GHz. Successful modulation with IEEE 802.11g signals is demonstrated...
Coherent Detection for 1550 nm, 5 Gbit/s VCSEL Based 40 km Bidirectional PON Transmission
Coherent Detection VCSEL Based Bidirectional PON Transmission
2015/5/22
Coherent detection of directly modulated 1550nm VCSELs in 5Gbit/s bidi-rectional 40km SSMF PON-links is presented. Receiver sensitivity of –37.3dBm after transmission is achieved with 30dB system marg...
25-Gb/s Transmitter for Optical Interconnection with 10-Gb/s VCSEL Using Dual Peak-Tunable Pre-Emphasis
Optics in computing optical interconnects
2015/5/22
We developed a 25-Gb/s VCSEL transmitter with 10-Gb/s VCSEL. By driving standard 10-Gb/s VCSELs using pre-emphasis technology to overcome their optical bandwidth limit, we achieved clear eye opening a...
1.3 μm all-VCSEL low complexity coherent detection scheme for high bit rate and high splitting ratio PONs
Fiber optics communications Vertical cavity surface emitting lasers Coherent
2015/5/21
Full 1.3 μm VCSEL-based simplified coherent detection receiver is demonstrated at 5 Gbps. Receiver sensitivity of -34 dBm is achieved providing link reach and splitting ratio extension for future pass...
Transmission Experiment Using a Coupled-Cavity VCSEL for Radio Frequency Conversion
Transmission Experiment Coupled-Cavity VCSEL Radio Frequency Conversion
2015/5/21
We perform a transmission experiment using a coupled-cavity VCSEL and demonstrate its unique ability for radio frequency conversion. For a short-reach link, the system performance is governed by the d...
First Experimental Demonstration of Low-Cost VCSEL- Intensity Modulated End-to-End Real-Time Optical OFDM Signal Transmission at 11.25Gb/s over 25km SSMFs
VCSEL Intensity Modulated OFDM Signal Transmission
2015/5/20
Low-cost, narrow modulation bandwidth, un-cooled VCSELs can be utilized to directly modulate 64-QAM-encoded 11.25Gb/s signals for end-to-end real-time optical OFDM transmission over 25km SSMF IMDD sys...
Implant Enhanced Dual Intracavity Polarization Switching Asymmetric Current Injected VCSEL
Implant Enhanced Dual ntracavity Polarization Switching Asymmetric Current VCSEL
2015/5/15
Output polarization is controlled by injecting current along crystalline directions. VCSELs with record-low threshold current of 0.19 mA and extinction ratio >21dB from fit is achieved. Polarization s...
Optical transmitter with 1060 nm VCSEL for low power interconnect
1060 nm VCSEL low power Optical transmitter
2015/5/15
An optical transmitter composed of a 90-nm CMOS driver and a high efficiency 1060nm VCSEL is characterized. The 10Gb Ethernet eye mask specification is met with a +33% margin with 1.7 mW/Gbps power co...