## Abstract A longβperiod grating (LPG) written in the cladding of an optical fiber is demonstrated.The optical fiber is specially designed and manufactured, which cladding is photosensitive, and core is not~.~ The cladding LPG is written in by illuminating a cladding photosensitive fiber with an U
Long-period gratings for the optimization of cladding-pumped microstructured optical fiber laser
β Scribed by Luciano Mescia; Tommaso Palmisano; Michele Surico; Francesco Prudenzano
- Publisher
- Elsevier Science
- Year
- 2010
- Tongue
- English
- Weight
- 582 KB
- Volume
- 33
- Category
- Article
- ISSN
- 0925-3467
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π SIMILAR VOLUMES
## Abstract In this paper, we show that a complete threeβlayer analysis is necessary to characterise the cladding modes in order to obtain grating period, resonances, and coupling length in the design of longβperiod gratings (LPGs), and that the simplified twoβlayer fiber geometry used by many auth
We propose and demonstrate a new technique for intensity-based fiber temperature sensing based on long-period fiber grating pairs having different temperature coefficients and an absorptive core mode blocker placed between the two gratings. The constructed fiber sensor exhibits a bandpass filter res