Fabrication of low OH loss holey fibers with varying air hole sizes and their optical properties

Title
Fabrication of low OH loss holey fibers with varying air hole sizes and their optical properties
Authors
한영근김길환이경식이상배
Keywords
Holey fibers; Curl patch cord; Special fibers; Bending sensitivity
Issue Date
2009-05
Publisher
Optics communications
Citation
VOL 282, NO 9, 1780-1784
Abstract
We experimentally investigate a flexible fabrication technique for low OH and transmission losses holey fibers with a Ge-doped core and air holes in a silica cladding region. Versatile holey fibers of different size, pitch, and shape of air holes were achieved by controlling the temperature and heating time of the holey fiber preform. In addition, we suppress the OH loss of less than 0.323 dB/km at 1383 nm. After fabricating holey fibers, we measure their optical properties including cut-off wavelength, mode field diameter, splicing loss, dispersion, bending loss, and polarization dependent loss based on the size of air holes. The total transmission loss was measured to be 0.226 dB/km at 1550 nm by improving the fabrication process. After fabricating optical patch cord based on holey fibers, we measured the long-term stability of the fabricated holey fiber by using the temperature cycling technique for 24 and obtained low power fluctuation of 0.2 dB. We achieve the high quality holey fiber with a low bending loss of 0.04 dB/turn under a bending radius of 2.5 mm at 1550 nm. We also obtain a tunable band rejection filter with a number of bending turns.
URI
http://pubs.kist.re.kr/handle/201004/35218
ISSN
0030-4018
Appears in Collections:
KIST Publication > Article
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