New Recording Technique Enables Creation of Miniaturized High-Performance Magneto-Optical
Magneto-optical storage devicescombine magnetic and optical recording methods to store information. While several companies once produced rewritable magneto-optical drives, these drives are rarely used today.
“Despite their significant advantages,magneto-optical drives have been replaced by cheaper flash drives or optical storage media such as DVDs, said research team leader Toshiya Murai of the Tokyo Institute of Technology in Japan. “Because our new recording method is implemented using silicon photonics, it could allow the creation of low-cost magneto-optical devices that store large amounts of information on a small chip.”
Demonstration of thermomagnetic recording
In addition, their devices are non-volatile - meaning that data is retained even when the device is not powered - and can withstand many write and rewrite cycles.
Built-in magneto-optical memory can be an all-optical alternative to electronic packet routers used in today's telecommunications infrastructure.
“It would eliminate the energy and expense requiredfor opto-electro-optical conversions, and would provide flexible communication for each data packet,” Murai said. "Magneto-optical storage devices can also provide bit-by-bit data storage for optical computers that use light to process, store, and transmit data."
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