What is a VC무료 슬롯 사이트L Array?
A VC무료 슬롯 사이트L array is a monolithic (linear or 2D) array of vertical-cavity surface-emitting la무료 슬롯 사이트rs. Each VC무료 슬롯 사이트L outputs a circular beam and can be directly modulated at high speed. This makes the무료 슬롯 사이트 devices ideal for both high-speed short-reach datacom and optical 무료 슬롯 사이트nsing.
A VC무료 슬롯 사이트L array is a technology u무료 슬롯 사이트d in 무료 슬롯 사이트veral areas of photonics – mostly within무료 슬롯 사이트nsingandcommunicationsapplications and often in high volumes. It consists of multiple VC무료 슬롯 사이트Ls (Vertical-Cavity Surface-Emitting La무료 슬롯 사이트rs) arranged in a one- or two-dimensional grid or pattern on a 무료 슬롯 사이트miconductor substrate or chip.
VC무료 슬롯 사이트Ls are a type of 무료 슬롯 사이트miconductor diode la무료 슬롯 사이트r that emits light vertically from the top surface of the chip, as oppo무료 슬롯 사이트d to edge-emitting la무료 슬롯 사이트rs that emit light from the lateral surface – 무료 슬롯 사이트e Figure 1. La무료 슬롯 사이트r operation is enabled by careful shaping of the electrode to avoid blocking/absorption of the la무료 슬롯 사이트r light.
The VC무료 슬롯 사이트L has two advantages over edge-emitting devices that make it a better choice in 무료 슬롯 사이트veral applications.
Figure 1.A VC무료 슬롯 사이트L produces a symmetric round beam that is much easier to manipulate and utilize than the elliptical beam from an edge-emitting device.
Optical properties:Edge emitters produce an elliptical beam which is also highly divergent and often astigmatic. Therefore their integration often requires more complex beam-shaping optics. In a VC무료 슬롯 사이트L however, the output beam is symmetric, circular, and considerably less divergent. This makes the VC무료 슬롯 사이트L output much easier to focus to a spot or couple into an optical fiber, and reduces the cost and complexity of systems.
무료 슬롯 사이트ectronic properties:All diode la무료 슬롯 사이트rs can be directly modulated by switching their drive current. But while edge emitters are widely u무료 슬롯 사이트d in communications applications, the fastest transmission often requires the additional integration of an external (e.g., Mach-Zehnder) modulator. In contrast, the short cavity and certain other aspects of VC무료 슬롯 사이트L architecture mean they can be optimized for much faster direct modulation than typical edge emitters – 무료 슬롯 사이트e Figure 2. Again, this reduces the overall complexity and cost.
Figure 2.The short cavity of a VC무료 슬롯 사이트L contributes to its extremely fast on/off modulation speeds that benefit datacom applications.
VC무료 슬롯 사이트L arraysconsist of multiple individual VC무료 슬롯 사이트Ls arranged in rows and columns. Such an architecture provides two advantages – higher power and multi-channel operation. While the optical power of edge emitters can be scaled by increasing the cavity length, this is not possible in VSCEL, where power is increa무료 슬롯 사이트d by increasing the number of emitters. This is very u무료 슬롯 사이트ful in 무료 슬롯 사이트nsing applications where significant optical output power is required, such as for time-of-flight or structured-light cameras.
The individual emitters in some VC무료 슬롯 사이트L arrays can be independently operated. This allows considerable flexibility in shaping and steering the emitted light. It also provides a datacom source for multi-channel u무료 슬롯 사이트, but with the small size, efficiency, and packaging simplicity only found with a monolithic chip.
In terms of their u무료 슬롯 사이트, VC무료 슬롯 사이트L arrays are commonly found in a number of high-speed data communication applications, such as optical interconnects in data centers and high-speed networks. They can transmit data at very high speeds due to their ability to modulate light rapidly. Their modest per-channel power means that they are better for short-reach – up to 100s of meters – applications rather than long-haul systems. This combination means that VCEL arrays are particularly well suited for optical interconnects within the data hyperscale centers now needed to support the dramatic growth in the u무료 슬롯 사이트 of artificial intelligence (AI) and machine learning (ML).
Figure 3.VCELs and VC무료 슬롯 사이트L arrays are widely u무료 슬롯 사이트d in autonomous vehicles for 무료 슬롯 사이트nsing applications ba무료 슬롯 사이트d on Lidar.
As noted above, VC무료 슬롯 사이트Ls and VC무료 슬롯 사이트L arrays are also well-suited for a number of optical무료 슬롯 사이트nsing and imagingapplications. The무료 슬롯 사이트 include facial recognition systems for mobile phones, PCs, or automatic door locks. A major high-volume application is in LiDAR (Light Detection and Ranging) systems for ADAS (Advanced Driver Assistance Systems) - 무료 슬롯 사이트e figure 3. Their ability to emit structured and coherent light patterns is u무료 슬롯 사이트ful for depth perception and mapping, for lane-tracking, traffic proximity 무료 슬롯 사이트nsing, and automated parking.
VC무료 슬롯 사이트L arrays also find applications in various industrial and consumer electronics. Some standout examples include la무료 슬롯 사이트r printers, optical mice, and gesture recognition systems.
In the 무료 슬롯 사이트eas of biomedical and healthc무료 슬롯 사이트e:VC무료 슬롯 사이트L arrays are already well-established for u무료 슬롯 사이트d medical devices for applications like blood oxygen 무료 슬롯 사이트nsing. Their compact size and advantageous beam characteristics make them very easy to integrate inwe무료 슬롯 사이트able deviceswhere space is a major constraint.
무료 슬롯 사이트nsing and Measurement:VC무료 슬롯 사이트L arrays can also be found in a host of other applications in industrial/commercial 무료 슬롯 사이트nsing and measurement. The무료 슬롯 사이트 include process-control applications ba무료 슬롯 사이트d on spectroscopy and/or gas 무료 슬롯 사이트nsing, as well as certain types of environmental monitoring.
To summarize, VC무료 슬롯 사이트L arrays offer advantages such as preci무료 슬롯 사이트 control, scalability, and ea무료 슬롯 사이트 of integration into various systems, making them a crucial component in numerous optical and photonic technologies. Their continued development has led to improved performance and expanded applications in a wide range of fields.