Abstract: An optical waveguide coupler can be adjusted in the field and can couple and redirect optical energy leaving a first optical waveguide oriented in a first position into a second optical waveguide oriented in second position different from the first position. The optical coupler can maximize the optical energy transfer between two optical waveguides, while minimizing any back reflection or other optical return losses. The optical coupler provides an automatic core-to-core alignment of optical waveguides in free space by using aspherically shaped lenses with predetermined prescriptions in combination with a reflecting device that is accurately positioned between the two lenses.

Abstract: An optical waveguide coupler can be adjusted in the field and can couple and redirect optical energy leaving a first optical waveguide oriented in a first position into a second optical waveguide oriented in second position different from the first position. The optical coupler can maximize the optical energy transfer between two optical waveguides, while minimizing any back reflection or other optical return losses. The optical coupler provides an automatic core-to-core alignment of optical waveguides in free space by using aspherically shaped lenses with predetermined prescriptions in combination with a reflecting device that is accurately positioned between the two lenses.

Abstract: An optical waveguide coupler can be adjusted in the field and can couple and redirect optical energy leaving a first optical waveguide oriented in a first position into a second optical waveguide oriented in second position different from the first position. The optical coupler can maximize the optical energy transfer between two optical waveguides, while minimizing any back reflection or other optical return losses. The optical coupler provides an automatic core-to-core alignment of optical waveguides in free space by using aspherically shaped lenses with predetermined prescriptions in combination with a reflecting device that is accurately positioned between the two lenses.

Abstract: A composite analog video signal can be preconditioned by a preconditioning device that removes noise from the composite analog video signal. The preconditioning device can comprise a low-pass filter that removes noise from the composite analog video signal by passing frequencies of the composite analog video signal below about 6 MHz. A decoder can amplify the preconditioned composite analog video signal and can decode the amplified signal into digital component signals. A compression module can encode the digital component signals for transmission over a communication network. The compression module can encode to the digital component signals using an MPEG-1 or other compression standard.

Abstract: An optical waveguide coupler can be adjusted in the field and can couple and redirect optical energy leaving a first optical waveguide oriented in a first position into a second optical waveguide oriented in second position different from the first position. The optical coupler can maximize the optical energy transfer between two optical waveguides, while minimizing any back reflection or other optical return losses. The optical coupler provides an automatic core-to-core alignment of optical waveguides in free space by using aspherically shaped lenses with predetermined prescriptions in combination with a reflecting device that is accurately positioned between the two lenses.