Optical spectrum analyser MS9740B reduces test time for laser diode production

Contributing to improved laser diode chip production efficiency, Anritsu has introduced the measurement function MS9740B-020 for the optical spectrum analyser MS9740B model. It evaluates a pulsed laser diode chip, reducing the test time and contributing to improved production efficiency of high power laser diode chips, said the company.

Laser diode chip manufacturers and optical equipment vendors evaluate the optical spectrum of chips during manufacturing. Market demand for high power laser diode chips is driven by higher communication bit rates and longer lidar detection ranges.

There are also new use cases, such as external laser small pluggable (ELSFP) modules for co-packaged optics applications, which are expected to accelerate demand. The continuous wave (CW) output from a high power laser diode chip is subject to power drift and wavelength shift as the chip temperature rises. This is prevented by suppressing the temperature rise by using pulsed laser diode chips. Currently, testing of pulsed laser diode chips during production takes longer because an external trigger signal is required to synchronise with the pulsed laser diode chip.

The MS97040B-020 is rugged in design and reduces tact time for pulsed laser diode  chips and accelerates optical spectrum evaluation by eliminating the need for a trigger signal, explained Anritsu.

It also assures measurement reproducibility for even high power laser diode chips, added the company with measurement reproducibility of ±1.4 dB for side mode suppression ratio (SMSR). Low SMSR variation improves the chip yield and helps production efficiency.

Anritsu has been providing communications test and measurement solutions for 128 years. Anritsu’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 multi-dimensional service assurance solutions for network monitoring and optimisation.

Anritsu also provides precision microwave/RF components, optical devices, and high-speed electrical devices for communication products and systems. It develops advanced solutions for 5G, M2M, IoT, as well as other emerging and legacy wireline and wireless communication markets.

Anrtisu has offices throughout the world and employees in over 90 countries.


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