External cavity laser with optically switched tuning mechanism

Details External cavity laser with optically switched tuning mechanism External cavity laser with optically switched tuning mechanism

H - Electricity

01

S

H01S 3/04 (2006.01) H01S 5/0687 (2006.01) H01S 5/14 (2006.01) H01S 5/0683 (2006.01)

Patent

CA 2285481

A stable switched multifrequency source (104) is described. The stable switched multifrequency source (104) includes a narrowband reflective optical filter bank (206). This bank (206) includes a plurality of narrowband reflective optical filter devices (208). In one embodiment, the stability and precision of the reflectivity of the narrowband reflective optical filter devices (208) are further enhanced through regulation via temperature (308) and/or bias current (128) based on a comparison of the output wavelength and a precise stable wavelength reference (134). The stable switched multifrequency source (104) also includes an optical switch (202) that is coupled to each of the narrowband reflective optical filter devices (208).

La présente invention concerne une source (104) multifréquence commutée stable qui comprend un banc (206) de filtres optiques réfléchissants à bande étroite composé de plusieurs filtres (208) optiques réfléchissants à bande étroite. Dans un mode de réalisation, on améliore encore la stabilité et la précision de la réflectivité des filtres (208) optiques réfléchissants à bande étroite en régulant la température (308) et/ou le courant de polarisation (128) sur la base d'une comparaison entre la longueur d'onde de sortie et une longueur d'onde de référence (134) stable précise. La source (104) multifréquence commutée stable comprend également un commutateur optique (202) qui est couplé à chacun des filtres (208) optiques réfléchissants à bande étroite.

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