H04B 10/071
Using a reflected signal
Official title: using a reflected signal, e.g. using optical time domain reflectometers [OTDR]
H04B10/071 (Using a reflected signal) appears on 870 US grants and 931 published applications in this corpus.
Search patents in H04B- Granted patents
- 870
- Published applications
- 931
- Assignees
- 362
- Inventors
- 1,755
- Latest grant
- 6 Oct 2026
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| 2022 | 68 | 89 |
| 2023 | 60 | 75 |
| 2024 | 53 | 46 |
| 2025 | 44 | 67 |
| 2026 | 42 | 52 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Crosstalk measuring method, and crosstalk measuring device6 Oct 2026US 12,754,100 B2Fujikura Ltd.
- Optical time domain reflectometer (OTDR)-based fiber monitoring optimization6 Oct 2026US 12,756,459 B2Viavi Solutions Inc.
- Passive optical network monitoring29 Sep 2026US 12,750,134 B2Corning Research & Development Corporation
- Systems and methods for fiber asset management15 Sep 2026US 12,739,029 B2Level 3 Communications, LLC
- Securement of optical fibers against eavesdropping using jamming signals15 Sep 2026US 12,739,039 B1Network Integrity Systems, Inc.
- Identification Method for Branch Ports of Optical Distribution Network, and Optical Distribution Network8 Oct 2026US 2026/0312678 A1Zte Corporation
- Multi-span sensing using wavelength / frequency multiplexing, synchronized receiver, and coherent signal processing1 Oct 2026US 2026/0298701 A1Subcom, LLC
- Multi-span sensing using wavelength / frequency multiplexing, synchronized receiver, and coherent signal processing1 Oct 2026US 2026/0303222 A1Subcom, LLC
- Optical link monitoring apparatus and method for optical communication network1 Oct 2026US 2026/0304012 A1Electronics and Telecommunications Research Institute
- Methods And Devices For Denoising Optical Time-Domain Reflectometry Signals24 Sep 2026US 2026/0291605 A1
Most cited
By later US patents
- Method and system for detecting optical faults within the optical domain of a fiber communication network248US 6,005,694 AMCI WorldCom, Inc. · 1999
- Optical time domain reflectometry (OTDR) trace analysis in PON systems169US 8,724,102 B2Telefonaktiebolaget LM Ericsson (publ) · 2014
- System and method for monitoring an optical communication system134US 7,872,738 B2Tyco Electronics Subsea Communications LLC · 2011
- Passive optical communication network with broadband upgrade115US 5,321,541 AAT&T Bell Laboratories · 1994
- Communication system based on remote interrogation of terminal equipment96US 5,559,624 ALucent Technologies Inc. · 1996