MUMBAI, India, May 1 -- Intellectual Property India has published a patent application (202611023646 A) filed by Indian Institute Of Technology, New Delhi, on Feb. 27, for 'anti-resonant negative-curvature optical fiber for spectral filtering.'
Inventor(s) include Jain, Deepak; and Gaur, Vishwas.
The application for the patent was published on May 1, under issue no. 18/2026.
According to the abstract released by the Intellectual Property India: "The present disclosure provides an anti-resonant negative curvature optical fiber (100) for spectral filtering. The fiber (100) includes a hollow or solid core region (102) extending along a length of the fiber (100), a cladding structure (108) surrounding the hollow or solid core region (102), and multiple nested or non-nested tubular elements (106) disposed within the cladding structure (108). Each tubular element (106) includes a wall (110) that forms a Fresnel reflector, where wall (110) thicknesses (t1, t2, t3) differ among the tubular elements (106) in radial or azimuthal directions or both to establish distinct resonance wavelengths. Unlike conventional anti-resonant fibers with uniform wall thickness that provide fixed resonance conditions, this approach enables distributed spectral filtering through controlled thickness variations at desired wavelengths, achieving wavelength-selective transmission without external filtering components for telecommunications, sensing, laser delivery, quantum, defense, and data center interconnect applications."
Disclaimer: Curated by HT Syndication.
