In fruit testing, fibers are mainly used for optical measurements combined with spectroscopy to assess quality. They guide optical signals to interact with specific components at or inside the fruit and transmit collected signals to analytical instruments for evaluation of ripeness, quality, and component content. Fiber technology provides a fast, accurate testing solution for understanding internal fruit conditions, ensuring quality and safety, and meeting consumer and market needs. As technology advances, these methods are expected to become more intelligent and automated, further improving inspection efficiency and accuracy.
| Parameter | Value |
| Optical fiber material | Hard-plastic-clad silica fiber |
| Connector Type | SMA905/FC/custom |
| Fiber core count | Multicore |
| Operating Temperature | -65~ +150 ℃ |
| Numerical Aperture | 0.37 |
| Wavelength Range | 400-2500 nm |
| Structure type | Customized on request (one input and one output, one input and two outputs) |
| Ferrule material | Stainless steel/ceramic |
| Fiber Type | Step-index type |
| Optical fiber specification | Customer specified (200-600μm) |
| Length | Customer specified |
| Protective tube diameter | Customer specified |
| Protective tube type | Customer specified |
| Coating material | Teflon ETFE |
| Single-filament transmission efficiency | ≥85% |
| Bundle transmission efficiency | ≥65% |
| Output Type | Customer specified (circular|rectangular|linear) |
| Clear Aperture Dimension | Customer specified |
| RoHS report | Compliant with standards |
| REACH report | Compliant with standards |
Near-infrared (NIR) spectroscopy: fiber sensors rapidly and nondestructively measure internal fruit sugar, acidity, water, and fiber. Raman spectroscopy: fibers deliver laser light and collect scattering to determine composition and structure, particularly sugars and nutrients. Fluorescence: fibers deliver UV or other excitation and collect emissions to assess selected contaminants, chemicals, or nutritional condition. Fiber imaging: differences in absorption and scattering reveal internal structures and defects such as rot or voids. Colorimetry: collected reflected or transmitted light goes to a colorimeter to assess ripeness and quality. Light scattering: methods called jidong light scattering in the source assess skin or tissue smoothness and fine structure, including wax and texture. For apples, a fiber sensor and NIR spectrometer scan each fruit on a production line to estimate sugar and internal damage.
Nondestructive measurement: optical fibers assess internal fruit quality without damage. Real-time, on-site detection: portable fiber-optic sensors support field measurements. Rapid analysis: combined with spectrometers, they quickly provide results for decision-making. Low cost and easy operation: fiber-optic detection systems are generally simple, easy to operate and inexpensive.
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Qinhuangdao Guangyan Technology Co., Ltd. (FIBEROCK), located in the Economic and Technological Development Zone, Qinhuangdao, Hebei Province, is a high-tech enterprise focusing on optical fibers, crystal materials, and optical components. The company integrates R&D, production, sales and service, specializing in specialty optical fibers and devices. Its products are widely used in medical treatment, fiber sensing, environmental monitoring equipment, biochemical analytical instruments, laser processing and other fields. The company has advanced specialty fiber drawing production lines and medical-grade clean workshops, and has passed ISO9001 quality system certification.