A novel concept of 4 × 1 power beam combiner based on multicore photonic crystal fiber isdescribed. The light coupling obtained by integrating small air-holes in the multicore photonic crystalfiber (PCF) structure allows light coupling between coherent laser sources to the central core. Thebeam propagation method (BPM) and coupled mode theory were used for analyzing the proposeddevice. Simulation results show that four coherent fiber laser sources of 1 μm in a multicore PCFstructure can be combined into one source after 2.6 mm light propagation, with a power efficiency of99.6% and bandwidth of 220 nm. In addition, a higher 8 × 1 ratio combiner was demonstrated, basedon the proposed device. Thus, the device can be very useful to combine beams.
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© 2017 by the authors.
- Beam propagation method
- Photonic crystal fiber