Abstract: An adapted semiconductor laser package that may convert a first type of package pin-out arrangement to a desired pin-out arrangement. The laser package may include a laser package including a laser, an isolator, a lens, a fiber sleeve, and a pin-out arrangement. The isolator and the fiber sleeve may be jointly arranged away from the laser. The laser package may also include an adapter with a first section with a plurality of holes geometrically arranged and mated with the package pin-out arrangement, a second section with an adapter pin-out arrangement with two rows of pins extending along opposite sides of the package, and electrical connections between the plurality of holes and the pins.

Abstract: A circuit controlling the gain of an amplifier in an optical transmitter used for optical communication, including a detection circuit for measuring the power of the RF input to a laser; a gain controller or controlling a gain of an amplifier, and a switch connected to the gain controller, wherein the gain controller is adapted, in response to an activation of a switch, to: (i) automatically vary gain of the amplifier, and (ii) set the gain of the amplifier at a level corresponding to a reduction in the noise and/or distortion associated with the transmitter.

Abstract: An adapted semiconductor laser package that may convert a first type of package pin-out arrangement to a desired pin-out arrangement. The laser package may include a laser package including a laser, an isolator, a lens, a fiber sleeve, and a pin-out arrangement. The isolator and the fiber sleeve may be jointly arranged away from the laser. The laser package may also include an adapter with a first section with a plurality of holes geometrically arranged and mated with the package pin-out arrangement, a second section with an adapter pin-out arrangement with two rows of pins extending along opposite sides of the package, and electrical connections between the plurality of holes and the pins.

Abstract: A circuit controlling the gain of an amplifier in an optical transmitter used for optical communication, including a detection circuit for measuring the power of the RF input to said laser; a gain controller for controlling a gain of said amplifier, and a switch connected to said gain controller, wherein said gain controller is adapted, in response to an activation of said switch, to: (i) automatically vary said gain of said amplifier, and (ii) set said gain of said amplifier at a level corresponding to a reduction in the noise and/or distortion associated with the transmitter.

Abstract: An optical interface between an optical fiber and a photodiode is provided. The optical fiber has an end. The optical interface includes a lens located such that a chief ray of an optical signal outputted at said end traverses a center of the lens. The lens may be a ball lens or a lens having an orientation such that the chief ray is incident substantially normal to a center of the lens.

Abstract: An optical interface between an optical fiber and a photodiode is provided. The optical fiber has an end. The optical interface includes a lens located such that a chief ray of an optical signal outputted at said end traverses a center of the lens. The lens may be a ball lens or a lens having an orientation such that the chief ray is incident substantially normal to a center of the lens.

Abstract: An optoelectronic add/drop multiplexer is disclosed having an optically transmissive block optically coupled to an incoming WDM signal having a two or more incoming optical signals. The add/drop multiplexer further includes one or more drop bandpass filters adapted to remove one or more incoming optical signals from a multi-channel signal flow in a first direction within the optically transmissive block and one or more add bandpass filters adapted to add one or more output optical signals to the multi-channel signal flow in a second direction within the optically transmissive block.