Abstract: Methods, systems and devices for communicating between a host optical systems controller and an optical subcontroller. A database residing in the optical subcontroller contains multiple possible valid command identifiers which define the format of any data following the command identifiers. Each device is equipped with a copy of the database. Each command identifier can be paired with a different action for a different device based on the database mapping. These command identifiers are sent from the host to the subcontroller with each command denoting a specific action to be taken by the subcontroller. Upon receipt of the command message, the subcontroller will determine the interpretation of a command identifier contained in the command message and execute the action associated with that command identifier. The subcontroller will then send a response message back to the host controller indicating the success or failure of the action denoted by the command identifier.

Abstract: Circuits and systems for use in monitoring and adjusting an optical signal strength of an optical data transmission system. A closed feedback loop which automatically controls an optical device's output uses an analog operational amplifier based circuit instead of a conventional microprocessor that uses complex calculations. The parameters of the operational amplifier circuit are monitored and controlled by a microcontroller to provide flexible operational settings. The analog circuit containing discrete analog components is used as a power meter for measuring an optical power signal strength of an optical signal. The optical signal is tapped by an optical coupler and the signal is received by a photodetector. The output of the photodetector is received by the analog circuit which produces an intermediate signal based on the level of optical power in the optical signal. The intermediate signal is used to control an optical device.

Abstract: An architecture for use in controlling and managing optical functions and optical devices. A common microprocessor based control layer coordinates commands between optical devices and a user station. The control layer executes an operating system which handles data flow in the control layer. Generic commands from the user station causes the operating system to call specific subroutines the produce digital commands. These digital commands are then passed to a digital layer that interfaces with an analog layer. The analog layer is specifically developed to interface and work with a specific optical device. The analog layer thus directly controls the optical device including changing its settings based on input from the digital layer.

Abstract: A method and devices for individually controlling the signal strength of single or multiple optical channels. A controller module monitors the signal strength of channels and amplifies those that need amplifying while attenuating those that are too strong using the same Erbium doped fiber amplifier. A controllable compensation module receives at least one channel and, when required, can either amplify or attenuate the signal strength of the channel(s). The module can be constructed out of a single fiber with an associated pump laser. If the laser provides insufficient pumping power, the fiber acts as an attenuator. If the laser provides a higher level of pump power, the fiber acts as an amplifier.

Abstract: Methods and devices for controlling an optical device. In one embodiment, the optical device is directly controlled by an outside analog electrical signal. Depending on the voltage or current level of the electrical signal, the output of the optical device is changed accordingly. An operational amplifier may be used to amplify the analog electrical signal prior to the signal being received by the circuitry of the optical device. For maximum flexibility in control, a switch can be coupled to the operational amplifier so that either analog or digital control signals can be used.

Abstract: A caddy for dispensing fiber optic patch cord cables. The device has a housing inside of which a disk is rotatably mounted. A length of patch cord cable is wound around the circumference of the disk and an S-shaped channel is present on one side of the disk. The channel is sized to hold captive a section of the patch cord fiber optic cable, thereby preventing any loss of signal or damage to the patch cord fiber optic cable from undue bending stresses on the cable. The housing has an opening through which the two ends of the patch cord fiber optic cable protrude.