A new exposure scheme for fabricating apodised ÿber Bragg gratings by the use of a uniform phase mask and a Gaussian beam laser is demonstrated. Average refractive index is kept nearly constant along the grating to derive a side lobe suppression of 20 dB in the shorter wavelength. This scheme allows
✦ LIBER ✦
Fiber Bragg gratings in As2S3 fibers obtained using a 0/−1 phase mask
✍ Scribed by C. Florea; J.S. Sanghera; B. Shaw; I.D. Aggarwal
- Publisher
- Elsevier Science
- Year
- 2009
- Tongue
- English
- Weight
- 327 KB
- Volume
- 31
- Category
- Article
- ISSN
- 0925-3467
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✦ Synopsis
We demonstrate the generation of fiber Bragg gratings in As2S3 fibers using a 633 nm HeNe laser and a 0/ À1 phase mask. In a 20-micron core fiber, 17-dB reflection was observed at 1545 nm with a linewidth of 0.18 nm. This method is more robust than the transverse holographic method previously demonstrated in these fibers.
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Apodised fiber Bragg gratings fabricated
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Chingchung Yang; Yinchieh Lai
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Article
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2000
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Elsevier Science
🌐
English
⚖ 304 KB