Related Experiment Video
Updated: Aug 15, 2026

Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy
Published on: November 22, 2019
Multiport N x N multimode air-clad holey fiber coupler for high-power combiner and splitter
1Department of Information and Communications, Gwangju Institute of Science and Technology, Buk-gu, Gwangju, South Korea.
Abstract:
We report 2 x 2 and 4 x 4 multimode air-clad holey fiber couplers fabricated by a novel fusion and tapering technique. The devices showed excellent port-to-port coupling uniformity over a wide spectral range of 800-1650 nm. The 4 x 4 coupler showed a low insertion loss of 9.9 dB and excess loss of 3.9 dB at 1310 nm. Because of its unique air cladding and the high numerical aperture of the holey fiber structure, the device showed strong potential in high-power applications.
Related Concept Videos
Maximum Power Transfer
By substituting the entire circuit with...
Power System Distribution
The transmission system is designed...
Design Example: Capacitance Multiplier Circuit
The circuit illustrated in Figure 1 below incorporates two op-amps, with the first operating as a voltage follower and the second acting as an inverting amplifier.
Impedance Combination
Cable Subjected to a Distributed Load
Fast Decoupled and DC Powerflow

