Abstract

We describe a low-loss single-mode waveguide in planar light-wave circuit (PLC) glass doped with boron and phosphorus, which is more difficult to write than pure-silica glass. The written waveguide has a rectangular core, a symmetric near-field pattern, and a propagation loss of 0.35dBcm. The loss that originates from the mode-field mismatch between the mode-field diameters of the written and the PLC waveguides is less than 0.1dBpoint. In addition, we successfully connected PLC waveguides with a 500-μm-long waveguide written with a laser. The laser-written waveguide can flexibly connect PLC waveguides with a low coupling loss.

© 2005 Optical Society of America

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References

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[CrossRef]

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K. Sakuma, S. Ishikawa, T. Shikata, T. Fukuda, and H. Hosoya, in Optical Fiber Communication Conference (OFC), OSA 2003 Technical Digest Series (Optical Society of America, Washington, D.C., 2003), p. 445, paper ThD2.

Gaeta, A.

Hartl, I.

Hirao, K.

Homoelle, D.

Hosoya, H.

K. Sakuma, S. Ishikawa, T. Shikata, T. Fukuda, and H. Hosoya, in Optical Fiber Communication Conference (OFC), OSA 2003 Technical Digest Series (Optical Society of America, Washington, D.C., 2003), p. 445, paper ThD2.

Ippen, E. P.

Ishikawa, S.

K. Sakuma, S. Ishikawa, T. Shikata, T. Fukuda, and H. Hosoya, in Optical Fiber Communication Conference (OFC), OSA 2003 Technical Digest Series (Optical Society of America, Washington, D.C., 2003), p. 445, paper ThD2.

Kowalevicz, A. M.

Laporta, P.

Marangoni, M.

Minoshima, K.

Miura, K.

Osellame, R.

Ramponi, R.

Sakuma, K.

K. Sakuma, S. Ishikawa, T. Shikata, T. Fukuda, and H. Hosoya, in Optical Fiber Communication Conference (OFC), OSA 2003 Technical Digest Series (Optical Society of America, Washington, D.C., 2003), p. 445, paper ThD2.

Shikata, T.

K. Sakuma, S. Ishikawa, T. Shikata, T. Fukuda, and H. Hosoya, in Optical Fiber Communication Conference (OFC), OSA 2003 Technical Digest Series (Optical Society of America, Washington, D.C., 2003), p. 445, paper ThD2.

Smith, C.

Streltsov, A. M.

A. M. Streltsov and N. F. Borrelli, J. Opt. Soc. Am. A 19, 2496 (2002).
[CrossRef]

Sugimoto, N.

Taccheo, S.

Takahashi, H.

H. Takahashi, Proc. SPIE 5246, 520 (2003).
[CrossRef]

Wielandy, S.

Winick, K.

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J. Opt. Soc. Am. A

A. M. Streltsov and N. F. Borrelli, J. Opt. Soc. Am. A 19, 2496 (2002).
[CrossRef]

J. Opt. Soc. Am. B

Opt. Lett.

Proc. SPIE

H. Takahashi, Proc. SPIE 5246, 520 (2003).
[CrossRef]

Other

K. Sakuma, S. Ishikawa, T. Shikata, T. Fukuda, and H. Hosoya, in Optical Fiber Communication Conference (OFC), OSA 2003 Technical Digest Series (Optical Society of America, Washington, D.C., 2003), p. 445, paper ThD2.

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Figures (6)

Fig. 1
Fig. 1

Schematic diagram of direct writing in a PLC.

Fig. 2
Fig. 2

Refractive-index profile of a waveguide written in a PLC at a power of 182 nJ .

Fig. 3
Fig. 3

Propagation loss spectra of the waveguide written in PLC glass and in pure silica.

Fig. 4
Fig. 4

(a) Index change and core size of the written waveguide. (b) MFDs of the written waveguide and the targeted PLC.

Fig. 5
Fig. 5

(a) Schematic diagram of the waveguide connection in this experiment. (b) Image at the junction point of waveguide connection.

Fig. 6
Fig. 6

Transmittance spectra of the PLC before and after connection.

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