Near-Infrared Spectrometer Fiber SMA-NIR-02
The source describes near-infrared spectroscopy (NIR) as analyzing molecular vibrational and rotational processes in the approximately 700-2500 nm region. It is widely used in chemistry, biology, pharmacy, food, and other fields. NIR spectrometer fibers are specialized transmitting fibers designed for this band. They connect source, sample, and detector: source light reaches the sample through fiber and, after interaction, returns to the detector. Besides guiding light in microscopes and other optics, fibers enable flexible paths, remote transmission, and multichannel NIR detection. Materials such as specially designed quartz must transmit NIR while providing sufficient strength/flexibility. Optimized interfaces improve delivery and collection at sample contact points. Transmission losses and environmental effects must be considered for accurate, repeatable spectra. The source reiterates that fibers carry light and connect source, sample, and detector. Specific roles: high flexibility permits analysis in compact or hard-to-access spaces that challenge conventional beam paths; low-loss long-distance transmission enables remote online/real-time monitoring, including outside laboratories; multichannel collection from multiple samples/points reduces experiment time and improves efficiency for complex analysis platforms; easy integration into portable, laboratory, and industrial spectrometers enables custom solutions; in some circumstances fibers reduce environmental dependence by isolating disturbances such as vibration or temperature fluctuations. Overall, fibers provide efficient transmission and make spectrometers more flexible, practical, and easily integrated. Selection considerations for NIR spectrometer fibers: fiber type—choose single-mode (SMF) or multimode (MMF) according to application/distance; the source recommends single mode for long distances and multimode for short distances. Wavelength—cover approximately 700-2500 nm; quartz and low-OH quartz are described as having good transmission over this range. Core diameter—common multimode sizes include 50μm, 100μm, 200μm, and 400μm. Smaller cores offer higher spatial resolution; larger cores collect more signal. NA—higher light-acceptance angles increase collection; common values are 0.22 and 0.37, selected to the application. Outer diameter/jacket—choose for environment and handling; the source lists polyurethane, spiral stainless-steel armor, and 'juya'anqing' (source material term), considering abrasion, heat, and chemical resistance. Insertion loss—the source defines it as optical attenuation during fiber transmission; lower values mean higher efficiency, so review loss specifications carefully. Connectors—match spectrometer/equipment interfaces, such as FC, SC, ST, or SMA. Temperature—ensure stable operation over the required application range.
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Overview
Specifications
| Parameter | Value |
|---|---|
| Optical fiber material | Infrared silica fiber |
| Connector Type | SMA905/FC/custom |
| Fiber core count | Multicore |
| Operating Temperature | -55~ +85 ℃ |
| Numerical Aperture | 0.22 |
| 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 (50-1000μm) |
| Length | Customer specified |
| Protective tube diameter | Customer specified |
| Protective tube type | Customer specified |
| Coating material | Acrylic resin |
| 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 |
Datasheet
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