[57] ABSTRACT A communications network has a plurality of nodes inter connected by an
optical transmission medium. The trans mission medium is capable of a carrying a plurality …

A method and system for accessing subterranean zones from the surface includes a
substantially vertical well bore extending from the surface to a target zone, and an …

An optical wavelength add/drop multiplexer provides communications between two optical
links supporting wavelength division multiplexing (WDM). A wavelength slicer spatially …

An optical cross-connect for the switching of optical channels at variable bit-rate (up to 10
Gbit/s), wavelength division multiplexed on bi-directional optical fibers forming the …

In accordance with one embodiment of the present invention, a method for drilling wellbores
includes drilling a main wellbore, disposing a casing string having a deflecting member at a …

A method and system for accessing subterranean zones from the surface includes a
substantially vertical well bore extending from the surface to a target zone, and an …

A photonic integrated circuit (PIC) device is described. The PIC device includes a set of
optical transceivers including optical transmitters and optical receivers, and an embedded …

In accordance with one embodiment of the present invention, a method for drilling wellbores
includes drilling a main wellbore and disposing a casing string in the main wellbore. The …

An optical packet switch switches optical packets according to bit-rates at which the optical
packets are provided. For example, optical packets that are received at similar bit-rates may …

Improved method and system for accessing subterranean deposits from the surface that
substantially eliminates or reduces the disadvantages and problems associated with …