Patents Filed & Standardization
WP 1
System and method for Phase-Locked Loop phase synchronization via synchronized reference clock switching, Filed on: 16.06.2025, Indian Patent Application No: 202641074747
A system and method for producing a process and temperature insensitive frequency from a on-chip oscillator (Under Preparation)
WP 3
A DEVICE AND A METHOD FOR DE-ROTATION OF SIGNALS IN AN OPTICAL COMMUNICATION NETWORK, Filed on: 29/7/2025, Indian Patent Application No: 202541071930
WP 5
System and Method for Modeling and Low-Complexity Correction of Polarization Mixing and Inter-Core Crosstalk in Multicore Fibers - Filed on: 19/09/2024, Indian Patent Application No: 202441070936
Granted: Bidirectional Simultaneous Transmission Over Single Mode Fiber - Filed: 01/05/2024, Indian Patent No: 580641
Longitudinal polarization profile estimation from reception of modulated data, Filed on: 19/12/ 2024, Indian Patent Application No: 202441070935 A
Copyright Granted: Digital signal processing for impairment mitigation in coherent optical communication, Indian Patent Application No: SW-30327/2025-CO
WP 6,7
Device and Method for Optical Coupling to a Multicore Fiber, Filing Date: 8th November 2024, Indian Patent Application Number: 202441086220.
WP 8
Granted: Method and optical fronthauling system for analog optical fronthauling in 5G communication network, Filed on: 20-12-2021, Indian Patent no: 436389.
Granted: A dither-free multi-channel any-point bias control system for DWDM Systems with time-based polling, Filed on: 20/09/2023, Indian Patent no: 576073
WP 9
Copyright Granted: OptiLink RoF Builder: Python-based library for designing analog RoF links (registered), Indian Patent Application No: SW-44355-2025-CO
Method patent on remote ONU management for analog fronthaul links in 5G networks (Under Preparation)
Design IP on the mechanical design and assembly of mmWave 2T/2R OLT and ONU (Under Preparation)
WP 10
BRILLOUIN PUMP SHAPING FOR FLAT RESPONSE SCALABLE PHOTONIC FILTER AND METHOD THEREOF, Filed on: 28 January 2025, Indian Patent Application No: 202511006868.
WP 11
Electro-optic frequency comb generation based on hybrid genetic optimization technique, Filed on: 10-10-2025, Indian Patent Application no: 202511097892
WP 12
A. Choudhary and P. K. Pandey, “Brillouin‐Based Optical Carrier Amplification for Kramers‐Kronig Receivers with Direct Current‐Value Iteration Method”,. Filed on: 17-06-2025, Indian Patent Application No. 202511058148
LOW-COMPLEXITY SELF-COHERENT SYSTEM AND METHOD FOR OPTICAL FIBER NONLINEARITY MEASUREMENT USING INTENSITY DETECTION, Filed on: 22-04-2026, Indian Patent Application No: 202611051419
WP 13
On-demand transparent optical phase conjugators (OPCs) for WDM networks for dispersion healing, Filed on: 27.02.2024, Indian Patent Application number: 202441013970.
Four wave mixing suppression with phase dithering (Drafting).
System and Method for Aligning Polarization in an Optical System, Filed on: 10.12.2025, Indian Patent Application number: 202541124724
WP 5+13
Low-Distortion Amplification of Probabilistic Shaped Signals using semiconductor optical amplifiers, Filed on 27.02.2024, Indian Patent Application No: 202441014040
System and a method to improve efficiency of multi-core fiber using index modulation, Filing Date: September 17, 2024, Indian Patent Application No: 202441070216
WP 14
Proactive localization of faulty Optical Amplifiers in C+L band WDM Optical Networks, Filed on: 20/06/2025, Indian Patent Application No: 202511059485
WP 15
SDN enabled path control in dynamically choosing alternate Quantum Secured Paths for the QKD against emulated attack scenarios (Drafting).
WP 16
Self balancing homodyne detector, Filing date: 30/07/2024, Indian Patent Application No: 202441057594
WP 17
Granted: A. Dixit, Ruchi, A. Prakash, V. Singh, and A. Gupta, “OPTICAL RECEIVER FRONT-END DEVICE FOR OPTICAL WIRELESS COMMUNICATION”, Filed on: 14.02.2025, Indian Patent No: 571069.
MULTI-CODE WALSH MULTIPLEXING FOR HIGH SPECTRAL EFFICIENCY IN LI-FI NETWORKS, Filed on: 16.10.2025, Indian patent Application No: 202511100407
AN OPTICAL WIRELESS COMMUNICATION SYSTEM, Filed on: 08.01.2026, Indian patent Application No: 202611002329
DESIGN OF A HIGH SPEED DRIVER CIRCUIT FOR ARRAY OF WHITE LEDS IN LIFI SYSTEM (Drafting)
WP 18
Granted: A METHOD FOR ALLOCATING CHANNELS FOR LDPC CODES AND A SYSTEM THEREOF, Filed on: 05.10.2021, Indian Patent No: 565729
A SYSTEM AND A METHOD FOR GENERATING AN ENGINEERED BEAM FOR SPECKLE REDUCTION, Filed on: 09.12.2025, Indian patent Application No: 202511124354
FREE-SPACE OPTICAL COMMUNICATION (FSOC) SYSTEM, Filed on: 09.02.2026, Indian patent Application No: 202611013798
SYSTEM AND METHOD FOR TRACKING AND ALIGNMENT OF FREE SPACE OPTICAL COMMUNICATION TRANSCEIVERS, Filed on: 09.02.2026, Indian patent Application No: 202611014036
Patents Filed under each Work Package
WP 15
TSDSI (SGSS) study item concluded: Interoperability of multivendor QKD node using SDN (Published)
WP 17 and WP 18
TSDSI: G.D. Verma and A.Dixit, "Standardization of FSO systems communication," 2023 TSDSI roadmap 3.0 workshop, Delhi, India, 2023, pp.1-5.
ITU-T (Q6/SG15): Proposal for update of block diagram and definition of Outage probability for G.fso (Accepted)
TSDSI: SWIC962: Enhancement to media access control (MAC) protocols for visible light communication (VLC) in indoor scenarios (Ongoing)
WP 5 and WP 13
ITU- T (SG15), Study Period 2022-2024: Proposal for modification of texts of new draft Supplement of G Suppl.G.65x
ITU- T (SG15/WP2): Crosstalk measurement test results in response to revision of G.650.2 (Accepted)
ITU- T (SG15/WP2): Indian experience on terrestrial installation of MCF (multi-core fibre) cables (Underground & Aerial) in the AOC testbed at IIT Madras, India (Accepted)
ITU- T (SG15/WP2): Proposal for a new work item for a draft new ITU-T recommendation L.fifomcf on “Optical Fan-In Fan-Out device (FIFO) for multi-core optical fibre (MCF) and cable”
ITU- T (SG15/WP2): Proposals to modify the texts to the draft revision G.665
ITU- T (SG15/WP2): Proposal for discussion on multicore fibre splicing (Submitted)
ITU- T (SG15/WP2): Proposal to revise the recommendation G.665 on Generic characteristics of Raman amplifiers and Raman amplified subsystems (Submitted)
ITU- T (SG15/WP2): Revision in the baseline text of G.csmcf and G.smmcf to include a new clause on Standard Minimum Fiber Length Requirements for ICXT Characterization (Submitted)
ITU- T (SG15/WP2): Considerations on Practical Deployment Characterization of Hollow-Core Fibre (HCF) Systems in new proposed Technical Report on HCF (Submitted)
ITU- T(SG15/WP2): Proposal for revisions in the baseline text of Recommendation L.400/L.12 on optical fiber splices (Submitted)
ITU- T (SG15/WP2): Proposal for revision of baseline text of G.csmcf and G.smmcf to include core identification framework for WC-MCF (Submitted)
ITU- T (SG15/WP2):
Polarization-resolved crosstalk measurement results of multicore fiber in response to revision of G.650.2 (Submitted)
Proposal for revision of G.650.2 to include alternate test method for inter-core crosstalk measurement of multicore fiber (Submitted)
Proposal for revision of G.650.2 to include time-averaged crosstalk measurement results (Submitted)
ITU- T (SG15/WP2): Proposal on Latency measurement method for Hollow-core fibers (Submitted)