| Patent Number |
Title Of Patent |
Date Issued |
| 7561765 |
Optical integrated circuit and optical integrated circuit module |
July 14, 2009 |
| An optical integrated circuit 1 according to the present invention includes a planar lightwave circuit 2, and a semiconductor element 3, which are fixed at one contact surface 12. A semiconductor optical amplifier (SOA) 9 is formed on a semiconductor substrate 8. A semiconductor wave |
| 7555175 |
Arrayed waveguide grating optical multiplexer/demultiplexer |
June 30, 2009 |
| An arrayed waveguide grating optical multiplexer/demultiplexer 10 of the present invention 10 comprises one arrayed waveguide grating (AWG) 20 having two input waveguides 21, 22 and two output waveguide-groups 23, 24, and a Mach Zehnder Interferometer-type interleaver 30 integrated with |
| 7542640 |
Arrayed waveguide grating optical multiplexer/demultiplexer |
June 2, 2009 |
| An arrayed waveguide grating optical multiplexer/demultiplexer includes an arrayed waveguide grating formed on a substrate. The arrayed waveguide grating includes two slab waveguides, one arrayed waveguide, first input/output waveguides respectively connected to each end facet of slab |
| 7539368 |
Arrayed waveguide grating |
May 26, 2009 |
| An arrayed waveguide grating has optical input waveguides, a first slab waveguide, an arrayed waveguide comprising plural waveguides of mutually-different lengths, a second slab waveguide and plural optical output waveguides. The first slab waveguide is divided along division surface |
| 7492983 |
Optical circuit device |
February 17, 2009 |
| The present invention provide an optical circuit device having: an optical circuit; a polarization beam splitter/combiner for splitting an incoming light beam into two polarization beams and combining the two polarization beams into an outgoing light beam; a first optical waveguide and a |
| 7480091 |
Delay-line demodulator and method of adjusting a phase shift in the demodulator |
January 20, 2009 |
| In a method of phase adjustment for the demodulator 1 of the present invention, the phase adjustment is performed by driving any one of the heaters on the two waveguides 10 and 11 in the Mach-Zehnder interferometer (MZI) 6 and on the two waveguides 14 and 15 in the MZI 7. In case tha |
| 7469079 |
Broadband wavelength multiplexing and demultiplexing filter and optical splitter with optical si |
December 23, 2008 |
| Two Mach-Zehnder optical interferometer circuits 13a and 13b are accurately point-symmetrically connected to each other to form a first point-symmetrically connected optical interferometer circuit 5 constituting a light input side circuit 1. Optical signals having a plurality of wave |
| 7233714 |
Planar optical waveguide circuit type variable attenuator |
June 19, 2007 |
| Provided is a planar optical waveguide circuit type variable attenuator capable of light attenuation by an arbitrary value in a range from 0 to 10 dB and also by not less than 30 dB, which is small-sized and is of power saving type. The attenuator is composed of a Mach-Zehnder interf |
| 7146079 |
Dynamic gain equalizer |
December 5, 2006 |
| The dynamic gain equalizer for flattening a gain profile of an optical amplifier includes: an optical waveguide circuit having multistage optical couplers, demultiplexing and multiplexing, each formed by connecting optical couplers arranged at a plurality of stages; and optical conne |
| 7133587 |
Dispersion compensator, method for manufacturing the same, and method for compensating wavelengt |
November 7, 2006 |
| A dispersion compensator includes at least one first optical waveguide, a first slab waveguide, an arrayed waveguide connected to the at least one first optical waveguide via the first slab waveguide, a second slab waveguide, at least one second optical waveguide connected to the arrayed |
| 7072545 |
Dispersion compensator, method for manufacturing the same, and method for compensating wavelengt |
July 4, 2006 |
| A dispersion compensator includes at least one first optical waveguide, a first slab waveguide, an arrayed waveguide connected to the at least one first optical waveguide via the first slab waveguide, a second slab waveguide, at least one second optical waveguide connected to the arrayed |
| 6920265 |
Arrayed waveguide grating type optical multiplexer/demultiplexer |
July 19, 2005 |
| An arrayed waveguide grating optical multiplexer/demultiplexer includes an arrayed waveguide connected to at least one first optical waveguide via a first slab waveguide, a plurality of second optical waveguides connected to the arrayed waveguide via a second slab waveguide. At least one |
| 6870979 |
Optical circuit, method for manufacturing optical circuit, optical circuit device and method for |
March 22, 2005 |
| An optical circuit device includes: a substrate and an optical waveguide layer having a core and a cladding formed on the substrate; an optical waveguide circuit of the core having an optical splitter for splitting light, an optical coupler for coupling light, a first connecting optical |
| 6836591 |
Arrayed waveguide grating type optical multiplexer/demultiplexer and optical waveguide circuit |
December 28, 2004 |
| An arrayed waveguide grating type optical multiplexer/demultiplexer in which the 1 dB band width is large, the ripple is small, and the degradation of the adjacent crosstalk can be controlled. A waveguide forming portion is formed on a substrate. The waveguide forming portion include |
| 6768840 |
Arrayed waveguide grating and method for manufacturing the same |
July 27, 2004 |
| An arrayed waveguide grating including at least one first optical waveguide, a first slab waveguide, an arrayed waveguide, a second slab waveguide and a plurality of second optical waveguides. The arrayed waveguide is connected to the first optical waveguide via the first slab wavegu |
| 6768832 |
Arrayed waveguide grating optical multiplexer/demultiplexer and method for manufacturing the sam |
July 27, 2004 |
| An arrayed waveguide grating optical multiplexer/demultiplexer includes an arrayed waveguide having a plurality of channel waveguides which includes a shortest channel waveguide having a shortest length. Each channel waveguide includes a curved portion provided between first and second |
| 6763164 |
Method for manufacturing a planar lightwave circuit, and planar waveguide circuit |
July 13, 2004 |
| The invention provides a simple metallic film manufacturing method for manufacturing an arrayed waveguide grating able to set each light transmitting central wavelength to a set wavelength at optionally predetermined temperature (for example 25.degree. C.). The arrayed waveguide grat |
| 6735364 |
Arrayed waveguide grating optical multiplexer/demultiplexer and method for manufacturing the sam |
May 11, 2004 |
| An arrayed waveguide grating optical multiplexer/demultiplexer includes first and second slab waveguides. At least one of the first and a second slab waveguides includes first and second portions which are separated along an intersecting face intersecting an optical path in the first or |
| 6567587 |
Dispersion compensator and dispersion-compensating module employing the same |
May 20, 2003 |
| A dispersion compensator with Bragg gratings which have a dispersion compensating function and are formed on output waveguides of an arrayed waveguide grating, and a dispersion-compensating module employing the dispersion compensator. |
| 6563986 |
Arrayed waveguide grating |
May 13, 2003 |
| The present invention provides an arrayed waveguide grating in which the center wavelength of light transmission does not depend on the environmental temperature thereof, wherein a waveguide-formed area (10) is formed on a substrate (1), in which an optical input waveguides (2), a fi |
| 6539158 |
Optical waveguide circuit |
March 25, 2003 |
| An optical waveguide circuit capable of controlling polarization crosstalk is provided. An under cladding is formed on a silicon substrate (11). A core is formed on the under cladding and has a waveguide structure in which one or more optical input waveguides (12) arranged side by side a |
| 6501896 |
Optical waveguide circuit |
December 31, 2002 |
| The present invention relates to an optical waveguide circuit such as an arrayed waveguide grating, etc. A lower cladding is formed on a silicon substrate. A core having the following waveguide construction is formed thereon. That is, an input side slab waveguide is connected to the |
| 6501882 |
Arrayed waveguide grating type optical multiplexer/demultiplexer |
December 31, 2002 |
| An arrayed waveguide grating optical multiplexer/demultiplexer includes an arrayed waveguide connected to at least one first optical waveguide via a first slab waveguide, a plurality of second optical waveguides connected to the arrayed waveguide via a second slab waveguide. At least one |
| 6490395 |
Arrayed waveguide grating and method for compensating optical transmitting center wavelength of |
December 3, 2002 |
| An arrayed waveguide grating including at least one first optical waveguide, a first slab waveguide, a plurality of arrayed waveguides, a second slab waveguide, and a plurality of second optical waveguides. The plurality of arrayed waveguides are connected to the at least one first o |
| 6456763 |
Arrayed waveguide grating type optical multiplexer/demultiplexer and a method of manufacturing t |
September 24, 2002 |
| An arrayed waveguide grating type optical multiplexer/demultiplexer in which a light transmission central wavelength is independent of temperature. A substrate is formed on a waveguide forming region in which optical input waveguides, a first slab waveguide, an arrayed waveguide incl |
| 6442314 |
Arrayed waveguide grating |
August 27, 2002 |
| An arrayed waveguide grating with a first slab waveguide connected to optical input waveguides and to arrayed waveguides for propagating light transmitted from the first slab waveguide. A second slab waveguide is connected to an output end of the arrayed waveguides and to optical output |
