title: Laser-diode wavelength tuning based on butt coupling into an optical fiber.
abstract: An extremely short external cavity that is realized when a Fabry-Perot laser diode is butt coupled to a waveguide or a fiber produces feedback that is effective for controlled wavelength tuning. We used butt coupling to tune a high-output-power laser diode over a wide range (as great as 15 nm) while maintaining constant driving current and temperature. Single-mode or multimode operation repeatedly occurred at specific points throughout the tuning range. An analytical model that includes the effect of multiple reflections from the external cavity, each attenuated by a modal overlap integral, and which is based on phenomenological principles, shows good agreement with the experimental results.
authors.forename: Y
authors.initials: Y
authors.lastname: Sidorin
authors.forename: D
authors.initials: D
authors.lastname: Howe