OSA: Measurement of Near to Mid IR Laser for Gas Detection
Global environmental issues are being highlighted and efforts are being made to reduce greenhouse gases. Carbon dioxide (CO2) is often cited as a greenhouse gas, but other gases that worsen the global environment include sulfur dioxide (SO2) and nitrogen dioxide (NO2). In addition, gas leak detection and central monitoring of explosive gases are effective measures for disaster prevention.
The laser absorption spectroscopy is one of the methods to detect minute amount of gas. It detects a certain gas using a distributed feedback Laser diode (DFB-LD), which has a light absorption wavelength specific to the gas. Since light absorption by gas becomes strong in the long wavelength region, near-infrared to mid-infrared DFB-LD exceeding 2000 nm has come to be used for gas detection.
The optical spectral characterization of DFB-LD is very important because the measurement capability of this method is greatly affected by the side mode suppression ratio (SMSR) performance of DFB-LD.
The applicable models are optical spectrum analyzers that can measure near-infrared and/or mid-infrared light. They offer dynamic range wide enough to measure SMSR of 50 dB or more of DFB-LD that cannot be observed with conventional spectroscopes.
|
Absorption wavelengths of Gases from NIR to MWIR
|
Indústrias Relacionadas
Produtos e Soluções Relacionadas
AQ6373E Visible Wavelength 350 - 1200 nm
- The high-performance optical spectrum analyzer optimized for visible laser measurement
- 3 models line up for various applications [Standard, High resolution, Limited]
- Ideal for the lasers of industrial, bio and medical
AQ6374E Wide Wavelength Range 350 - 1750 nm
- Wide range optical spectrum analyzer covering from visible light to communications wavelength
- Wide wavelength range: 350 to 1750 nm
- Ideal for various applications including fiber
AQ6375B Long Wavelength Optical Spectrum Analyzer 1200 - 2400 nm
High Performance LONG WAVELENGTH
The AQ6375B is a bench-top optical spectrum analyzer covering the long wavelengths, 1200 to 2400 nm, with the added benefits of gas purging input ports / output ports, a built-in cut filter for high order diffracted light, and a novel double speed mode which increases the sweep speed up to 2 times compared to the standard sweep mode.
AQ6375E Long Wavelength 1200 to 2400 nm and 1000 to 2500 nm
High Performance LONG WAVELENGTH
The AQ6375E covers not only telecommunication wavelengths, but also the SWIR region which is often used for environmental sensing and medical applications.
・Lineup of 3 models [Standard, Extended and Limited]
・Covers wavelengths
1200 to 2400 nm [Standard, and Limited]
1000 to 2500 nm [Extended ]
AQ6376 Three Micron Optical Spectrum Analyzer 1500 - 3400 nm
MWIR WAVELENGTH with internal gas purge and cut filter
The AQ6376 is the latest version of our bench-top optical spectrum analyzer extending the wavelength coverage well beyond the NIR range of our previous models into the MWIR region from 1500 to 3400 nm.
Popular applications include the detection of gases such as carbon oxides (COx), nitrogen oxides (NOx), and hydrocarbon gas (CxHy) for environmental studies.
AQ6376E Three Micron 1500 - 3400 nm
MWIR WAVELENGTH with internal gas purge and cut filter
The AQ6376E is the latest version of our bench-top optical spectrum analyzer extending the wavelength coverage well beyond the NIR range of our previous models into the MWIR region from 1500 to 3400 nm.
Popular applications include the detection of gases such as carbon oxides (COx), nitrogen oxides (NOx), and hydrocarbon gas (CxHy) for environmental studies.
AQ6377 Five Micron 1900 - 5500 nm
- AQ6377 long-wavelength optical spectrum analyzer model covering the MWIR region over 5 μm
- AQ6370D optical analyzer model with highest resolution (up to 20 pm)
- Highest close-in dynamic (up to 78 dB)
- Widest measurement power (up to 110 dB)
Long Wavelength Optical Spectrum Analyzer AQ6375
Unique LONG wavelength range of 1200 to 2400 nm makes this the world's first and only OSA specifically designed for use in advance applications such as Carbon Monoxide (CO), Carbon Dioxide (CO2) gas detection and LIDAR.
Analisador de Espectro Ótico
Um analisador óptico de espectro (ou OSA) é um instrumento de precisão projetado para medir e exibir a distribuição de energia de uma fonte ótica em um intervalo de comprimento de onda específico. Um rastreamento OSA exibe a energia na escala vertical e o comprimento de onda na escala horizontal.
Equipamentos de teste ótico
A Yokogawa oferece soluções para medir componentes e sistemas óticos tradicionais e de ponta, atendendo à crescente demanda por linhas de fibra de alta capacidade e novas tecnologias de componentes.