Abstract: External cavity optical transmitters are disclosed which include a gain chip and a mirror that define an optical cavity. The optical cavity may include collimating lenses, electro-optic crystals for controlled phase shift, and additional frequency selective optical components such as a grating and/or an etalon. The external cavity laser is capable of lasing at any of the specified ITU wavelengths (frequencies) in the L, C, or any other band in the optical spectrum. The optical transmitter is wavelength tuned by a lens mounted on an actuator.

Abstract: A package for housing an optoelectronic device and an integrated circuit is disclosed. The package includes an insulating base having an upper surface. The optoelectronic device and the integrated circuit are mounted to the upper surface of the insulating base. The package also includes a metal sealing member having a top wall and a bottom wall. The bottom wall of the metal sealing member is attached to the upper surface of the insulating base. The package further includes a metal cover having a rim located at a bottom portion thereof. The rim of the metal cover is adapted to attach to the top wall of the metal sealing member to thereby hermetically seal the metal cover to the insulating base.

Abstract: A method of manufacturing an optoelectronic packaging comprises placing a solder preform between a metal cover and an insulating base, applying pressure to the metal cover and the insulating base, and applying a current through multiple conductive vias to heat the solder preform to melt.

Abstract: External cavity optical transmitters are disclosed which include a gain chip and a mirror that define an optical cavity. The transmitters further include a modulator operated at or near the same temperature as the gain chip. In some examples, the optical transmitters are temperature controlled to optimize the efficiency and wavelength stability thereof, while maintaining acceptable chirp performance of the modulator. In some examples, the optical transmitters include an electro-optic module disposed within the optical cavity to change the path length thereof so that the efficiency and wavelength stability of the transmitter is optimized.

Abstract: A package for housing an optoelectronic device and an integrated circuit is disclosed. The package includes an insulating base having an upper surface. The optoelectronic device and the integrated circuit are mounted to the upper surface of the insulating base. The package also includes a metal sealing member having a top wall and a bottom wall. The bottom wall of the metal sealing member is attached to the upper surface of the insulating base. The package further includes a metal cover having a rim located at a bottom portion thereof. The rim of the metal cover is adapted to attach to the top wall of the metal sealing member to thereby hermetically seal the metal cover to the insulating base.

Abstract: A method of manufacturing an optoelectronic packaging comprises placing a solder preform between a metal cover and an insulating base, applying pressure to the metal cover and the insulating base, and applying a current through multiple conductive vias to heat the solder preform to melt.

Abstract: Wavelength lockers, which monitor the wavelength drift of a laser's beam due to aging, are tunable to adjust for manufacturing misalignments between its various optical components. Tuning is accomplished by adjusting the position of a collimating lens using a flexure. Adjusting the lens position changes the angle of incidence of a monitored beam relative to a fixed filter and detector and avoids the challenging manufacturing task of rotating the filter and detector to achieve the same result.

Abstract: A wavelength locker for monitoring the wavelength drift of a laser uses a pair of detectors for detecting a power component of the laser beam and a wavelength component of the laser beam, respectively. Various positionings of the power detector and/or variations to the collimating lens provide a compact arrangement with fewer components.

Abstract: External cavity optical transmitters are disclosed which include a gain chip and a mirror that define an optical cavity. The optical cavity may include collimating lenses, electro-optic crystals for controlled phase shift, and additional frequency selective optical components such as a grating and/or an etalon. The external cavity laser is capable of lasing at any of the specified ITU wavelengths (frequencies) in the L, C, or any other band in the optical spectrum. The optical transmitter is wavelength tuned by a lens mounted on an actuator.

Abstract: A package for housing an optoelectronic device and an integrated circuit is disclosed. The package includes an insulating base having an upper surface. The optoelectronic device and the integrated circuit are mounted to the upper surface of the insulating base. The package also includes a metal sealing member having a top wall and a bottom wall. The bottom wall of the metal sealing member is attached to the upper surface of the insulating base. The package further includes a metal cover having a rim located at a bottom portion thereof. The rim of the metal cover is adapted to attach to the top wall of the metal sealing member to thereby hermetically seal the metal cover to the insulating base.

Abstract: A wavelength locker for monitoring the wavelength drift of a laser uses a pair of detectors for detecting a power component of the laser beam and a wavelength component of the laser beam, respectively. Various positionings of the power detector and/or variations to the collimating lens provide a compact arrangement with fewer components.

Abstract: External cavity optical transmitters are disclosed which include a gain chip and a mirror that define an optical cavity. The transmitters further include a modulator operated at or near the same temperature as the gain chip. In some examples, the optical transmitters are temperature controlled to optimize the efficiency and wavelength stability thereof, while maintaining acceptable chirp performance of the modulator. In some examples, the optical transmitters include an electro-optic module disposed within the optical cavity to change the path length thereof so that the efficiency and wavelength stability of the transmitter is optimized.

Abstract: A package for housing an optoelectronic device and an integrated circuit is disclosed. The package includes an insulating base having an upper surface. The optoelectronic device and the integrated circuit are mounted to the upper surface of the insulating base. The package also includes a metal sealing member having a top wall and a bottom wall. The bottom wall of the metal sealing member is attached to the upper surface of the insulating base. The package further includes a metal cover having a rim located at a bottom portion thereof. The rim of the metal cover is adapted to attach to the top wall of the metal sealing member to thereby hermetically seal the metal cover to the insulating base.

Abstract: A system and method are disclosed for recording information on a phase change medium is disclosed. The method includes irradiating a region of the phase change medium with a first dose of laser energy. A first portion of the region is irradiated with a second dose of laser energy in a manner that causes the first portion of the region irradiated with the second dose of laser energy to be in a different state than a second portion of the region that is not irradiated by the second dose of laser energy.

Abstract: A wavelength locker for monitoring the wavelength drift of a laser uses a pair of detectors for detecting a power component of the laser beam and a wavelength component of the laser beam, respectively. Various positionings of the power detector and/or variations to the collimating lens provide a compact arrangement with fewer components.

Abstract: Wavelength lockers, which monitor the wavelength drift of a laser's beam due to aging, are tunable to adjust for manufacturing misalignments between its various optical components. Tuning is accomplished by adjusting the position of a collimating lens using a flexure. Adjusting the lens position changes the angle of incidence of a monitored beam relative to a fixed filter and detector and avoids the challenging manufacturing task of rotating the filter and detector to achieve the same result.