Fibre grating stabilized diode laser

Details Fibre grating stabilized diode laser Fibre grating stabilized diode laser

H - Electricity

01

S

H01S 5/0683 (2006.01) H01S 3/067 (2006.01) H01S 3/091 (2006.01) H01S 5/026 (2006.01)

Patent

CA 2308228

A fibre Bragg grating (34) is used to stabilize the intensity and frequency fluctuations of a diode laser (26). The diode laser is connected with an opto-mechanical apparatus to the fibre which contains the grating. The grating is formed in the guided-mode region of the optical fibre (32). The wavelength of maximum grating reflectivity is selected to lie near the maximum of the diode laser gain bandwidth. The output facet of the diode laser has a reflectivity approximately equal to or greater than that of the fibre Bragg grating. The magnitude. and bandwidth of the grating reflectivity stabilizes the diode laser output without appreciably reducing the optical output power from the end of the fibre. The bandwidth of the optical spectrum of the diode laser is selected depending on the distance of the grating from the diode laser.

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