| Patent Number |
Title Of Patent |
Date Issued |
| 7116479 |
Array polarization beamsplitter and combiner |
October 3, 2006 |
| A method and apparatus is described to beam split or combine light for multiple fiber optic channels in a single device. Multiple light beams may enter the device through an array of fiber ports with each port having a collimating lens. The device includes a beamsplitter/combiner hav |
| 7006729 |
Optical components having reduced insertion loss |
February 28, 2006 |
| An optical device is provided which includes a slab waveguide and at least one input waveguide coupled to a first side of the slab waveguide. The device also includes a plurality of output waveguides coupled to a second side of the slab waveguide. The slab waveguide has a segmented trans |
| 6917760 |
Wide passband optical interleaver |
July 12, 2005 |
| A method and apparatus is provided for reformatting or interleaving a WDM signal that includes a plurality of optical channels having a first bandwidth and a first channel spacing. The method begins by receiving the WDM signal and dividing it into first and second subsets of optical |
| 6836588 |
Optical signal interleaving comb filter with reduced chromatic dispersion and applications there |
December 28, 2004 |
| Optical signal interleaver/deinterleavers with reduced chromatic dispersion are described. In one embodiment, the interleaver/deinterleavers include two optical filters and an optical isolator coupled to receive the output of each of the optical filters. The optical isolators feed the fi |
| 6834141 |
Wide pass-band interferometric optical device utilizing an optical ring-resonator |
December 21, 2004 |
| A filtering device such as an optical interleaver/deinterleaver includes first and second optical couplers each having two inputs and two outputs. The inputs of the first coupler are adapted to receive input optical signals to be filtered and the outputs of the second coupler are adapted |
| 6829410 |
Optical signal interleaving comb filter with reduced chromatic dispersion and applications there |
December 7, 2004 |
| Optical signal interleaver/deinterleavers with reduced chromatic dispersion are described. In one embodiment, the interleaver/deinterleavers include two optical filters and an optical isolator coupled to receive the output of each of the optical filters. The optical isolators feed the fi |
| 6782157 |
Bidirectional optical interleaver |
August 24, 2004 |
| The abstract is amended to read, "An inventive method and apparatus is provided by a bidirectional optical 1.times.2 device formed by a cascade of three optical 2.times.2 devices. Each 2.times.2 device is bidirectional where optical signals propagate through the 2.times.2 device in the |
| 6768843 |
Cascaded fourier filter interleaver having enhanced performance |
July 27, 2004 |
| A cascaded interleaver includes at least three two-stage Fourier filters. A first of the Fourier filters includes first and second waveguides such that the first waveguide has a longer optical path length than the second waveguide. A second of the Fourier filters includes third and fourt |
| 6765172 |
Laser fusion based WDM coupler |
July 20, 2004 |
| A method is described that involves scanning a laser beam across and applying a stretching force to a fusion region that is formed by a neighboring pair of optical fibers that include a core and a cladding layer. The scanning and applying occurs while the optical permissiveness of an |
| 6703588 |
Compact, thermally stabilized housing for planar lightguide circuits |
March 9, 2004 |
| A housing is provided for maintaining a planar lightguide circuit at a temperature within a predetermined temperature range independent of ambient temperature. The housing includes a planar heating arrangement supporting and in thermal contact with the planar lightguide circuit. Also |
| 6701056 |
Modular, variably configurable retainer assembly for optical components |
March 2, 2004 |
| A variably configurable and modular retainer for various discrete optical components (such as passive optical elements and mass fusion splices) is provided by a substantially planar base having an optical component support surface. Complementary finger pairs extend upwardly from the base |
| 6658181 |
Polarization interleaver |
December 2, 2003 |
| A method and apparatus provides a WDM optical signal having a plurality of channels with a pair-wise orthogonal polarization state. The method begins by receiving a plurality of unpolarized optical wavelengths defining a plurality of optical channels separated by a prescribed channel spa |
| 6643448 |
Optical fiber stripping tool |
November 4, 2003 |
| A method and apparatus is described for stripping the coating of an optical fiber. A fixture having a fiber cleat may be used to secure an optical fiber to enable removal of the protective coating from the fiber along a precise length of the fiber. The length of protective coating remova |
| 6636661 |
Optical signal interleaving comb filter with reduced chromatic dispersion and applications there |
October 21, 2003 |
| Optical signal interleaver/deinterleavers with reduced chromatic dispersion are described. In one embodiment, the interleaver/deinterleavers include two optical filters and an optical isolator coupled to receive the output of each of the optical filters. The optical isolators feed the fi |
| 6618525 |
Motorized vacuum twist fixture |
September 9, 2003 |
| A system and method for twisting together two fibers to create an optical fiber coupler is disclosed. In one embodiment, the two optic fibers are threaded through a chuck, which is rotated by a motor to create an amount of twist in the two optical fibers necessary to cause a light signal |
| 6498879 |
Polarization-independent, environmentally stable optical fiber narrow band multi-window waveleng |
December 24, 2002 |
| A structure and method are provided to improve stability of a multi-window dense wavelength division multiplexers and to provide polarization-independent multi-window dense wavelength division multiplexers. In one embodiment, the coupler region of a multi-window wavelength division m |
| 6324322 |
Fused-fiber multi-window wavelength filter using unbalanced Michelson Interferometer |
November 27, 2001 |
| A fused-fiber multi-window wavelength filter (MWF) is constructed with an unbalanced Michelson Interferometer, in which input light passing through the fused coupling region is decoupled and travels along two fibers of different optical path lengths. The two light signals travel to the e |
| 6263128 |
Fiber unbalanced Mach-Zehnder interferometers with flat-top spectral response for application in |
July 17, 2001 |
| According to the present invention, a multi-window wavelength division multiplexer (MWDM) is coupled to a correcting filter characterized by a shallow modulation depth and a channel separation smaller than the MWDM. A correcting filter is coupled to an input of the MWDM or to each of the |
| 6256433 |
Expandable interleaving optical add/drop filter module |
July 3, 2001 |
| An optical add/drop filter (OADF) module is provided that is capable of only utilizing one filter to drop and add multiple channels from a multiplexed signal. In one embodiment, a demultiplexer separates the input signal into groups of signals or channels to be dropped. This group of |
| 6160932 |
Expandable wavelength division multiplexer based on interferometric devices |
December 12, 2000 |
| A wavelength division multiplexer (WDM) utilizes cascaded interferometric devices, where the two output branches of interferometric devices in each new stage are each coupled to an additional stage of interferometric devices having the same wavelength separation or channel spacing, which |
