Optically amplifying semiconductor diodes with curved waveguides

Details Optically amplifying semiconductor diodes with curved waveguides Optically amplifying semiconductor diodes with curved waveguides

1999-07-13

2000-09-12

Davie, James W.

Coherent light generators

Particular active media

Semiconductor

372 45, H01S 3085

Patent

active

061188034

ABSTRACT:
A semiconductor gain element has an active waveguide incident at an angle greater than normal incidence on an end facet. The waveguide may be a single stripe or may be a stripe coupled to a flared region. The waveguide may include a curved portion to produce the non-normal incidence on the end facet. The gain element may be used as the gain element within a tunable, external cavity laser, or may also be used as an amplifier to amplify an external signal. The waveguide may be formed from a central portion surrounded laterally by cladding regions. Further, absorbing regions may be positioned outside the cladding regions to absorb light that does not propagate within the waveguide.

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