The generation and recognition of a record-length 511-chip optical code is experimentally demonstrated by use of a superstructured fiber Bragg grating (SSFBG) with a chip rate of . Very high reflectivity (92%) is achieved with high-quality correlation properties. The temperature deviation tolerance is approximately , which is within the package’s temperature stability range . Experimental results show good agreement with the theory. They indicate the SSFBG’s potential for processing a long optical code with an ultrahigh chip rate, which could significantly improve the system’s performance.
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