제품기초지식

OSA: 공간광 측정

관리자 2025-12-02 조회수 668

첨부파일(1)

OSA 공간광 측정.pdf (197.0 KB)

OSA: Spatial Light Measurement

Published Date: 2020

When measuring light emitted into space, the emitted light needs to be captured into an optical fiber before entered in to an optical spectrum analyzer (OSA). However, there are cases where ordinary optical fibers cannot capture a sufficient amount of light in the OSA, such as the output of a light source that emits light from a surface such as an LED or a fluorescent lamp and pulsed light with a low duty ratio (short emission time and long repetition period).

The applicable models have a free space structure inside the optical input port which allows to use an optical fiber with a core diameter of up to 800 µm, so the use of large core fiber helps the OSA collect more light. Please note that the actual minimum wavelength resolution is limited by the core diameter of the optical fiber used (See lower right table) and for wavelengths over 2000 nm, an optical fiber with low infrared absorption (e.g. fluoride fiber) is required. In OSA that uses an optical fiber in the optical input port, even if the core diameter of the external optical fiber is increased, the amount of light that can be taken in is not increased because it is limited by the core diameter of the internal optical fiber.

Core diameter dependence (Reference 50 μm)

Core diameter dependence (Reference 50 μm)

How optical input structure affects optical power measurement

How optical input structure affects optical power measurement

Limitation of minimum wavelength resolution by optical fiber

Optical fiber		Minimum wavelength resolution (nm)
Type	Core (μm)	AQ6360 Telecom	AQ6370 Telecom	AQ6373 VIS	AQ6374 VIS- exNIR	AQ6375 exNIR-SWIR	AQ6376 exNIR-MWIR	AQ6377 SWIR-MWIR
SM	5	0.1	0.02	0.02 *1	0.05	0.05	0.1	SM	5	0.2
SM	9.5	0.1 *1	0.02 *1	0.02	0.05* 1	0.05 *1	0.1 *1	SM	9.5	0.2
GI	50	0.1	0.05	0.05	0.2	0.1	0.1	SM	13	0.2 *1
GI	62.5	0.1	0.05	0.05	0.2	0.1	0.1	MM	50	0.5
SI	80	0.2	0.1	0.1	0.2	0.2	0.2	MM	80	1
SI	100	0.5	0.2	0.2	0.5	0.5	0.5	MM	100	1
SI	200	1	0.5	0.5 *2	0.5 *2	1	1	MM	200	2
SI	400	2	1	1 *2	1 *2	2	2	MM	400	5
SI	800	2	2	2 *2	2 *2	2	2
Approximate values at reference wavelengths 1 Reference optical fiber type 2 Core size setting: Large

Related Industries

Related Products & Solutions

AQ6360 Telecom Production 1200 - 1650 nm

0.1 nm resolution
±20 pm accuracy
55 dB dynamic range
-80 dBm level sensitivity
High sweep speed for manufacturing

AQ6361 Telecom Production 1200-1700 nm

0.03 nm resolution
±20 pm accuracy
55 dB dynamic range
-80 dBm level sensitivity
Highest sweep speed for manufacturing

AQ6370D Telecom Optical Spectrum Analyzer 600 - 1700 nm

AQ6370D Optical Spectrum Analyzer
Popular TELECOM wavelength Range of 600nm to1700nm
Ideal model for Telecommunications applications for single-mode and multi-mode optics

AQ6370E Telecom 600 - 1700 nm

0.02 nm resolution
±8 pm accuracy
67 dB dynamic range
-90 dBm level sensitivity
Single-mode and multi-mode

AQ6373B Visible Wavelength Optical Spectrum Analyzer 350 - 1200 nm

Dedicated SHORT wavelength Range of 350nm to1200nm
Accurately measure visible spectrum of 380nm to 780nm
Bio-sciences and beyond
Measuring 1064nm Nd:YAG, DPSS Laser sources

AQ6373E Visible Wavelength 350 - 1200 nm

0.02 nm resolution
±50 pm accuracy
60 dB dynamic range
-80 dBm level sensitivity
Single-mode and multi-mode
Industrial & biomedical laser testing

AQ6374 Wide Range Optical Spectrum Analyzer 350 – 1750 nm

AQ6374 Wide Range Optical Spectrum Analyzer
Covers wavelengths from 350 to 1750 nm
Visible lights (380 to 780 nm) and telecommunication wavelengths

AQ6374E Wide Wavelength Range 350 - 1750 nm

0.05 nm resolution
±50 pm accuracy
60 dB dynamic range
-80 dBm level sensitivity
Single-mode and multi-mode
Visible to communications wavelengths

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

0.05 nm resolution
±50 pm accuracy
55 dB close-in dynamic range
90 dB measurement dynamic range
-70 dBm level sensitivity
Single-mode and multi-mode
NIR and SWIR wavelengths
Advanced pulsed light measurement (APLM) mode

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

0.1 nm resolution
±0.5 nm accuracy
55 dB close-in dynamic range
78 dB measurement dynamic range
-65 dBm level sensitivity
Single-mode and multi-mode
SWIR and MWIR wavelengths
Advanced pulsed light measurement (APLM) mode

AQ6377 Five Micron 1900 - 5500 nm

0.1 nm resolution
±0.5 nm accuracy
50 dB dynamic range
-60 dBm level sensitivity
singlemode and multi-mode
MWIR wavelengths

AQ6377E Five Micron 1900 - 5500 nm

0.1 nm resolution
±0.5 nm accuracy
50 dB close-in dynamic range
73 dB measurement dynamic range
-60 dBm level sensitivity
Single-mode and multi-mode
MWIR wavelengths
Advanced pulsed light measurement (APLM) mode

Optical Spectrum Analyzers

High-resolution measurement of optical power vs wavelength
Ideal for R&D, manufacturing, and laser characterization

Optical Test Equipment

Advanced optical testing tools engineered to validate components and systems powering today’s high-speed fiber networks and emerging photonics technologies.

다음글: OSA: 가시광의 색좌표 및 주파장 측정

주메뉴