Variable wavelength light source

Details Variable wavelength light source Variable wavelength light source

2006-08-08

2006-08-08

Harvey, Minsun Oh (Department: 2828)

Coherent light generators

Particular beam control device

Tuning

C372S009000, C372S012000, C372S014000, C372S075000, C372S092000, C385S125000

Reexamination Certificate

active

07088747

ABSTRACT:
When a piezoelectric element3applies an external force to a plastic photonic crystal, the photonic crystal deforms, and accordingly, the photonic band gap easily changes. When the photonic band gap changes, transmission of light with a specific wavelength is limited. Therefore, light with a desired wavelength is outputted from the photonic crystal2upon sufficient tuning, and extracted to the outside through an output window6. In the present invention, a plastic photonic crystal2which can achieve sufficient wavelength tuning although it is small is used, and elements are unitized, so that the entire wavelength tunable light source unit is downsized.

REFERENCES:
patent: 5999308 (1999-12-01), Nelson et al.
patent: 6058127 (2000-05-01), Joannopoulos et al.
patent: 6064506 (2000-05-01), Koops
patent: 6542682 (2003-04-01), Cotteverte et al.
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patent: 2004/0008934 (2004-01-01), Takiguchi et al.
patent: 2004/0012840 (2004-01-01), Takiguchi et al.
patent: WO 98/59219 (1998-12-01), None
patent: WO 98/59219 (1998-12-01), None
Figotin, A., et al., “Tunable Photonic Crystals,” Mat. Res. Soc. Symp. Proc., vol. 603, Nov. 30, 1999, pp. 195-200.

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