公司简介
美国Insight Photonics Solutions公司主要致力于医学成像方法的光学相干断层扫描、光纤传感，快速精确光谱和电信测试用高速半导体激光器的开发。
产品列表
Insight Akinetic Swept Lasers Enabling OCT and SS-OCT Angiography
Low cost
High speed 50-200 kHz (demonstrated to 1 MHz)
Wide wavelength 115 nm Gaussian equivalent
Phase stable ~0.5 pm rm s
Programmable/adjustable
1310 or 1550 nm (1060 coming)
Insight Photonic Solutions brings the low cost and high performance of an all-semiconductor solution to swept lasers. The Insight™ laser is akinetic (without any form of movement in the tuning mechanism). It is fast. It generates superior optical quality. The result is an OCT image free of artifacts.
The Insight laser moves from any optical state to any other optical state in nanoseconds. This unprecedented flexibility provides novel OCT imaging possibilities.
The Insight laser overcomes many of the performance, cost and size limitations of kinetic lasers such as MEMS, SLED+filter, macro external-cavity, VCSEL+MEMS+pump+circulator+SOA and FDML lasers.
Leaders in the industry are calling the Insight OCT laser engine “the ideal OCT laser.”
Insight Akinetic Swept Lasers Enabling Next Gen Fiber Sensing
10-10,000 times higher repeatability and accuracy
10-10,000 times higher noise rejection
Low-cost; multi-channel
Enables high density distributed sensing
Achieve electrical bridge level accuracy
The InsightTM swept laser is an interrogator accurate enough to see small-magnitude changes in strain, vibration or temperature; fast enough to see vibrations propagate down a structure; and inexpensive enough for large-quantity deployments.
With akinetic swept laser technology, Insight Photonic Solutions brings the low cost and high performance of an all-semiconductor solution to fiber sensing.
A swept laser allows multiple fibers to be interrogated simultaneously with minimal cost per additional fiber. The Insight™ laser is akinetic (without any form of movement in the tuning mechanism). It is fast and generates outstanding optical quality.
High Performance Balanced Photodetector (BPD-1)
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The BPD-1 differential photodetector is a DC to 400 MHz dual balanced photodetector optimized for swept source OCT (SS-OCT) imaging systems. By careful design, the BPD-1 supports high speed SS-OCT, minimizing factors that other detectors do not even specify, such as harmonic distortion and group delay. Importantly, with high speed and low noise applications such as with new generation lasers, the laser noise can be an order of magnitude below older lasers, so the detector may limit the overall system noise performance and resulting image quality. The NEP of less than 5 pW/Hz is exemplary, and is roughly 75% lower than comparable devices. Since signal levels in SS-OCT systems can vary from setup to setup, a selectable 5 V/mW or 10 V/mW gain can be selected with little performance impact. Selectable gain allows the signal level to be adjusted to maximize the use of the analog-to-digital conversion dynamic range, avoiding loss of effective bits of resolution. The BPD-1 is configured as a dual-balanced receiver by subtracting the two optical input signals from each other, resulting in the cancellation of common mode noise. Dual balanced detection allows small changes in the signal path to be extracted from the interfering noise floor. The detector consists of two balanced photodiodes and an ultra-low-noise, high-speed transimpedance amplifier. Matching the two photodiodes results in an excellent common mode rejection ratio (CMRR), leading to better noise reduction. The detector a balanced RF-output from the transimpedance amplifier, and the Monitor+ and Monitor- ports allow the response of each photodiode to be observed individually to verify performance of each leg independently. The detectors are fiber coupled with SMF-28 fiber, reducing the chance of image artifacts that can occur with detector coupling optics. Insight has worked with one of the world’s top analog design teams at Graviton in Japan to create the BPD-1. Graviton, and their founder and top designer, Nagatomo-san, have created some of the world’s best audio amplifiers for decades, Nagatomo has also built some of the world’s best photodetector devices, including precision devices up to 8 GHz. By careful attention to parts, layout, topology and design, critical factors such as parasitic capacitance is reduced by multiples, supporting overall performance substantially better than other devices. | ||
