MUMBAI, India, Jan. 23 -- Intellectual Property India has published a patent application (202641001593 A) filed by National Institute Of Technology, Warangal, Telangana, on Jan. 7, for 'system and method for orbital angular momentum (oam) state recognition using single-pixel detection in multimode fibers.'
Inventor(s) include Purnesh Singh Badavath; and Vijay Kumar.
The application for the patent was published on Jan. 23, under issue no. 04/2026.
According to the abstract released by the Intellectual Property India: "A system and method for recognizing orbital angular momentum (OAM) states of light transmitted through multimode fibers using single-pixel detection has been proposed in the present invention as shown in figure-1. An OAM beam, generated by devices such as spiral phase plates, spatial light modulators, or fiber-based emitters, is directed onto a perturbing element such as a rotating diffuser to produce a temporally varying speckle field. This speckle field is coupled into a multimode fiber, exciting a superposition of guided modes that evolves over time. The output speckle pattern is captured by a single-pixel detector, and the resulting temporal speckle sequence (TSS) is digitized and processed through signal conditioning and feature extraction techniques. Machine learning or deep learning classifiers, including CNNs, RNNs, LSTMs, transformers, or SVMs, are employed to accurately determine the OAM state. The system is alignment-tolerant, high-speed, wavelength-independent, and compatible with various fiber types and OAM values, enabling reliable OAM recognition in existing optical communication infrastructures."
Disclaimer: Curated by HT Syndication.
