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US 2025/0052945 A1Published application
Smf to mmf coupler
AssigneePanduit Corp.
InventorsJose M. Castro, Yu Huang, Bulent Kose, Richard J. Pimpinella, Asher S. Novick
Life of this patent
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Abstract
A patch cord for transmitting between a single mode fiber (SMF) and a multi-mode fiber (MMFs) has a MMF, SMF, and a photonic crystal fiber (PCF) with a hollow core placed between the SMF and MMF. A mode field diameter (MFD) of the PCF hollow core section is in the range of 16 to 19 microns, the length of the PCF is between 1 cm to 10 cm, the MMF has 50±2 microns core diameter, the SMF has a 6-9 microns core diameter, and the coupling between the PCF mode to the MMF fundamental mode is maximized.
Claims14
A patch cord comprising:
- a multi-mode fiber (MMF) comprising an MMF core diameter;
- and
- a hollow core member including a mode field diameter (MFD) that is smaller than the MMF core diameter, the hollow core member comprising:
- a first hollow core end;
- a second hollow core end located at an opposite end to the first hollow core end;
- and
- a first end splice coupling positioned at the first hollow core end, wherein the first end splice coupling is configured to couple the MMF to the hollow core member at the first hollow core end, and wherein the first end splice coupling is actively aligned to minimize misalignment at a transition between the hollow core member and the MMF by maximizing an overlap integral of a fundamental mode of the hollow core member with a fundamental mode of the MMF while also minimizing power transmissions in non-fundamental modes within the MMF.
4 more elements
Dependencies are inferred from the claim text.