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National Taiwan University and Anritsu Collaborate to Develop RIN Automatic Test and Verification System


MS2850A provides variety of photoelectric converter options over a wide range of wavelengths, enables fast and accurate RIN measurements in the full frequency domains


Anritsu is pleased to announce that the Graduate Institute of Photonics and Optoelectronics (GIPO) at National Taiwan University (NTU) has adopted its market-leading MS2850A series spectrum analyzer/signal analyzer platform, successfully used in the Vertical-Cavity Surface Emitting Laser (VCSEL) test. This test has also equipped with an automatic test software jointly developed with Professor Chao-Hsin Wu’s team to verify the Relative Intensity Noise (RIN) in lasers and provides an automatic test solution for developing VCSEL devices. The two parties will continue to cooperate to jointly promote the VCSEL industry development.

The importance of evaluating RIN parameters is also increasing, due to the rapid development of light emitting devices and their characteristics directly affect the overall performance of the digital and analog optical communication systems. With the development of optical transmission systems towards high-speed and multi-mode, one of the big challenges lies in how to quickly complete the measurement of RIN characteristics when evaluating in the high-performance, multi-wavelength and high-integrated lasers.

The Signal Analyzer MS2850A is a high-level signal/spectrum analyzer combination, covering with a frequency range of 9 kHz to either 32 GHz or 44.5 GHz. It has excellent dynamic range, amplitude, near-end phase noise performance and accurate Displayed Average Noise Level (DANL), making it suitable for small noise measurement of high-speed optoelectronics devices. With the multi-wavelength optical converters options, it helps achieve the purpose of fast and accurate RIN measurement in the full frequency domains.

"The imminent demand of big data and biosensing is accelerating adoption of VCSELs in optical communication and 3D sensing," said Chao-Hsin Wu, professor of the GIPO at NTU, "Anritsu offers not only a complete and stable test platform, but also excellent technical experts to assist our team jointly developed the RIN automatic test and verification system, which successfully applied to the VCSEL test. We look forward to continuing cooperation in the future to meet the wide range of laser applications need.”

"We are delighted that National Taiwan University continues to rely on the Anritsu’s advanced technologies and communication equipment,” said Ivan Chen, General Manager of Anritsu Taiwan. “This joint RIN automated test solution co-developed by the GIPO at NTU, with its calculation principle and measurement structure, and Anritsu's engineering department and software department. In addition to the signal analyzers MS2850A/MS2840A/MS2830A series, it also integrates with other related measurement equipment, further reduce time for product testing and verification, making RIN testing faster and convenient."

About Graduate Institute of Photonics and Optoelectronics, NTU

The Graduate Institute of Photonics and Optoelectronics (GIPO) at National Taiwan University was formerly known as the Optoelectronics Group of the Graduate Institute of Electrical Engineering. In August 1992, GIPO was established as part of the College of Engineering. Professor Hung-Chun Chang was the first Chairman. At the time, the Institute offered a Master’s program. Three years later, in August 1995, the Institute started to offer its Ph.D. program. Since August 1997, the Institute has become part of the newly established College of Electrical Engineering. On August 1, 1990, the College was renamed to the College of Electrical Engineering and Computer Science.

Optoelectronics is essentially an interdisciplinary study, and its diversification also brings a broad academic and application space. Therefore, one of GPIO’s important missions is to promote international exchange activities and industry-academic cooperation. In addition to cultivating students’ professional skills, their leadership and demeanor are also actively cultivated. Under resource constraints, GIPO’s excellent research achievements have been recognized by the international academics, promoting large projects to develop new technologies with industry, and further advance domestic industry development.

The research topics of the faculty in GIPO cover a broad spectrum of photonics and optoelectronics technologies, including:

(1)Display Technologies: research on liquid crystal displays (LCD), organic light-emitting diodes (OLEDs) displays, poly-Si and amorphous thin film transistors for LCD and OLED display, projector techniques, and optical MEMS for display applications.

(2)Energy Technologies: research on solar cells and solid-state lighting.

(3)Fiber Optical Communications: active and passive fiber-based devices, modules and subsystems in optical fiber communications, and Optical code-multiplex transmission systems.

(4)Computer-aided Optoelectronic Numerical Methods: research on optical waveguide structure, optoelectronic devices and biomedical imaging simulation, and research on photonic crystal characteristics.

(5)Biophotonics: bio-sensing, biomedical instruments, optical coherence tomography, and non-Invasive optical microscopy.

(6)Optoelectronic & Electronic devices: research on wide band gap semiconductors and nanostructures, LiNbO3 waveguides, Indium nitride (InN), quantum dot light-emitting diodes (QD-LEDs), broadband optical amplifiers, CMOS, 3D photonic crystals and nitride semiconductors.

About Anritsu

Anritsu Corporation ( is a global provider of innovative communications test and measurement solutions. The company’s philosophy engages customers as true partners to help develop wireless, optical, microwave/RF, and digital solutions for R&D, manufacturing, installation, and maintenance applications, as well as multidimensional service-assurance solutions for network monitoring and optimization. Anritsu also provides precision microwave/RF components, optical devices, and high-speed electrical devices for communication products and systems. The company develops advanced solutions for 5G, M2M, IoT, as well as other emerging and legacy wireline and wireless communication markets. Anritsu sells in over 90 countries worldwide with approximately 4,000 employees.

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