Tunable laser with a fixed and stable wavelength grid...

Details Tunable laser with a fixed and stable wavelength grid... Tunable laser with a fixed and stable wavelength grid...

2006-05-16

2006-05-16

Harvey, Minsun Oh (Department: 2828)

Coherent light generators

Particular beam control device

Tuning

C327S018000, C327S092000, C327S099000, C327S102000

Reexamination Certificate

active

07046704

ABSTRACT:
A wavelength tunable mode-locked laser system including a complex laser cavity comprising a broadband reflective mirror at one end and a wavelength chirped selective mirror at the other end. The system further includes a gain element and a low finesse Fabry-Perot etalon element inside the laser cavity. The gain element may be a semiconductor laser chip, with a broadband high reflection coating at one end and a partially reflecting coating at its other end. The gain element has a well-defined length, such that its longitudinal modes match a required optical frequency grid. The system also includes an active modulation element applied externally on said complex laser cavity to provide mode-locking of a specific cavity length among said defined predetermined cavity lengths, such that all possible optical frequencies emitted by the laser system are stabilized to the linear grid dictated by the Fabry-Perot longitudinal modes, that could be in accordance with the International Telecommunications Union Standards.

REFERENCES:
patent: 5870417 (1999-02-01), Verdiell et al.
patent: 6389047 (2002-05-01), Fischer
patent: 6654390 (2003-11-01), Spiegelberg et al.
patent: 6816518 (2004-11-01), Zimmerman
patent: 6862136 (2005-03-01), Koren et al.
patent: WO99/39411 (1999-08-01), None

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