Abstract
An all-silica photonic bandgap fiber with a cladding index difference of approximately 2 % and diameter-to-pitch ratio (d/wedge) of 0.12 was fabricated and studied. To our knowledge, this is the first report on the properties of photonic bandgap fiber with such a small d/wedge. The fiber is single-mode in the fundamental bandgap. The mode field diameter in the 1000-1200 nm wavelength range is 19-20 microm. The minimum loss in the same range is 20 dB/km for a 30-cm bending diameter. In our opinion, all-silica photonic bandgap fiber can serve as a potential candidate for achieving single-mode propagation with a large mode area.
Highlights
All-solid photonic bandgap fibers are a new and extraordinary object, different both from conventional index guiding and hollow-core bandgap fibers [1]
An all-silica photonic bandgap fiber with a cladding index difference of approximately 2 % and diameter-to-pitch ratio (d/Λ) of 0.12 was fabricated and studied. This is the first report on the properties of photonic bandgap fiber with such a small d/Λ
Allsilica photonic bandgap fiber can serve as a potential candidate for achieving single-mode propagation with a large mode area
Summary
All-solid photonic bandgap fibers are a new and extraordinary object, different both from conventional index guiding and hollow-core bandgap fibers [1]. We consider another important laser systems application: single-mode large mode area propagation in a wide spectral range This can be achieved through the fabrication of a cladding with a small rod-diameter-to-pitch ratio (d/Λ), where d is the rod diameter and Λ is the center-to-center distance between neighboring rods. We demonstrate that small d/Λ results in robust single-mode operation over a wide spectral range from 900 to 1500 nm with mode field diameter of ~20 micron and confirm that it permits cladding pumping from the fiber end We believe that this type of fiber compares favorably to “conventional” photonic crystal fiber [6] for large mode area single-mode propagation and is easer to fabricate
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
