Optically amplifying semiconductor diodes with curved waveguides

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

1997-11-21

2000-07-18

Davie, James W.

Coherent light generators

Particular resonant cavity

372 20, 372 46, 372102, H01S 310, H01S 308

Patent

active

060917555

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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