Abstract: Disclosed is a method and system applicable to attaching a single or multiple optical fibers in sequence to a photonic integrated circuit enabling precise control of optical fibers and/or multiple types of optical fibers and/or at any pitch. The system and method provide optical alignment and in situ attachment of one or more optical fibers to a photonic integrated circuit chip using a photo-curable adhesive, wherein curing light is delivered to the adhesive by the optical fiber being attached.

Abstract: A system for reducing the cost and increasing the rate and reliability of data transmission from space to ground includes a network of relay satellites in low Earth orbit (LEO). Each relay satellite is configured to receive data from one or more client satellites, and configured to transmit data from LEO to ground using optical communications. The system may also include multiple optical ground stations configured to receive the data and transmit the received data using terrestrial networks to client locations. The network may provide an alternative to downlinking large amounts of data for new satellite operators without an existing ground network and for established satellite operators seeking higher data rates, lower latency, or reduced ground system operating costs.

Abstract: A system for reducing the cost and increasing the rate and reliability of data transmission from space to ground includes a network of relay satellites in low Earth orbit (LEO). Each relay satellite is configured to receive data from one or more client satellites, and configured to transmit data from LEO to ground using optical communications. The system may also include multiple optical ground stations configured to receive the data and transmit the received data using terrestrial networks to client locations. The network may provide an alternative to downlinking large amounts of data for new satellite operators without an existing ground network and for established satellite operators seeking higher data rates, lower latency, or reduced ground system operating costs.

Abstract: A circuit provides a ramp voltage for purposes of controlling simultaneously a pair of transistors from saturation to cutoff and vice versa. Means are provided for generating an electronic strike and chime tone which is connected both to an amplifier circuit and the transistor controlled to cutoff. A tuner circuit which is part of the radio to provide a radio tone likewise is connected both to the amplifier and the transistor controlled to saturation. The circuit is provided with an enabling input at an alarm time and by dissipating the tones by varying percentages as the transistors change their state, a crescendo-decrescendo action may be obtained.