Reflective digitally tunable laser

H - Electricity – 01 – S

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H01S 5/40 (2006.01) G02B 6/34 (2006.01) H01S 5/026 (2006.01) H01S 5/028 (2006.01) H01S 5/14 (2006.01) H01S 3/18 (1995.01) H01S 3/103 (1995.01)

Patent

CA 2133235

- 23 - REFLECTIVE DIGITALLY TUNABLE LASER ABSTRACT A tunable laser formed on a semiconductive wafer comprising a plurality of monolithically integrated optical amplifiers and a planar optical multiplexer is disclosed. According to the invention, one of the optical amplifiers is activated by energy, which amplifier produces a signal. The signal is carried along a waveguide associated with the optical amplifier and enters a reflective Dragone router, which is the preferred optical multiplexer. The reflective Dragone router functions, in conjunction with the activated optical amplifier, to define a wavelength selective optically transmissive pathway to create lasing action. Facet mirrors are cleaved in the semiconductive wafer defining the lasing cavity which includes the optical amplifiers, associated waveguides and the reflective Dragone router.

Laser accordable, formé sur une tranche semi-conductrice, comprenant plusieurs amplificateurs optiques monolithiquement intégrés et un multiplexeur optique planaire. Un des amplificateurs optiques est activé au moyen d'une énergie, et il produit un signal. Ce signal est porté le long d'un guide d'onde associé à l'amplificateur optique et traverse un répartiteur Dragone réflecteur constituant le multiplexeur optique préféré. Le répartiteur Dragone réflecteur, conjointement avec l'amplificateur optique activé, sert à définir une voie de transmission optique sélective en longueur d'onde pour créer un effet laser. Des miroirs à facettes sont clivés dans la tranche semi-conductrice définissant la cavité du laser qui inclut les amplificateurs optiques, les guides d'onde associés et le répartiteur Dragone réflecteur.

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