Journal
IEEE PHOTONICS TECHNOLOGY LETTERS
Volume 21, Issue 13, Pages 947-949Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LPT.2009.2021071
Keywords
Integrated optics; optical planar waveguide couplers; optical planar waveguides
Funding
- Engineering and Physical Sciences Research Council (EPSRC) of the United Kingdom [EP/C013840/1]
- Engineering and Physical Sciences Research Council [EP/C013840/1, EP/C013956/1] Funding Source: researchfish
- EPSRC [EP/C013840/1, EP/C013956/1] Funding Source: UKRI
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We demonstrate compact cross-couplers for fiber-pigtailed photonic circuitry produced by direct ultraviolet writing. A new design solution has been applied to shorten the device in length by 400% while keeping the bend loss at a level of <0.1 dB, which allows the use of cross-couplers in more complex photonic circuits with a smaller footprint and propagation loss. We demonstrate symmetrical cross-coupler operation and device performance that surpasses that of previously reported cross-couplers in terms of balanced symmetry and minimized footprint.
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