Abstract: An integrated coherent receiver that is configured to receive an optical signal and receive a local oscillator (LO) source from a remote location. The integrated coherent receiver is configured to extract phase and frequency information carried by the optical signal using the LO source from the remote location.

Abstract: An integrated coherent receiver that is configured to receive an optical signal and receive a local oscillator (LO) source from a remote location. The integrated coherent receiver is configured to extract phase and frequency information carried by the optical signal using the LO source from the remote location.

Abstract: A transmission-type polarization insensitive modulator implemented as a polarization insensitive micro ring modulator (PIMRM) includes a first polarization splitter-rotator (PSR) configured to generate a first light beam and a second light beam having a common polarization from an input, a micro ring configured to modulate the first light beam with data to generate a first output signal, and modulate the second light beam with data to generate a second output signal, and a second PSR configured to combine the first output signal and the second output signal to form a modulated output signal, wherein the micro ring is disposed in between the first PSR and the second PSR.

Abstract: A wavelength-division multiplexed (WDM) polarization-independent transmissive modulator (PITM) that receives a multi-wavelength continuous wave (CW) light of indeterminate polarization, splits the multi-wavelength CW light into two transverse electric (TE) polarized components, demultiplexer the polarized components into single-wavelength CW lights, modulates the single-wavelength CW lights using four-port cross-state or bypass-state modulators, multiplexes the modulated output of the four-port modulators (FPM) into two polarized modulated components, and combines the two polarized modulated components into a multi-wavelength modulated output signal.

Abstract: An edge coupling device including a substrate, a buried oxide disposed over the substrate, a cladding material disposed over the buried oxide, where the cladding material includes a trench, an inversely tapered silicon waveguide disposed within the cladding material beneath the trench, and a ridge waveguide disposed within the trench, where the ridge waveguide and the inversely tapered silicon waveguide are vertically-aligned with each other.

Abstract: A wavelength-division multiplexed (WDM) polarization-independent transmissive modulator (PITM) that receives a multi-wavelength continuous wave (CW) light of indeterminate polarization, splits the multi-wavelength CW light into two transverse electric (TE) polarized components, demultiplexer the polarized components into single-wavelength CW lights, modulates the single-wavelength CW lights using four-port cross-state or bypass-state modulators, multiplexes the modulated output of the four-port modulators (FPM) into two polarized modulated components, and combines the two polarized modulated components into a multi-wavelength modulated output signal.

Abstract: A transmission-type polarization insensitive modulator implemented as a polarization insensitive micro ring modulator (PIMRM) includes a first polarization splitter-rotator (PSR) configured to generate a first light beam and a second light beam having a common polarization from an input, a micro ring configured to modulate the first light beam with data to generate a first output signal, and modulate the second light beam with data to generate a second output signal, and a second PSR configured to combine the first output signal and the second output signal to form a modulated output signal, wherein the micro ring is disposed in between the first PSR and the second PSR.

Abstract: An edge coupling device including a substrate, a buried oxide disposed over the substrate, a cladding material disposed over the buried oxide, where the cladding material includes a trench, an inversely tapered silicon waveguide disposed within the cladding material beneath the trench, and a ridge waveguide disposed within the trench, where the ridge waveguide and the inversely tapered silicon waveguide are vertically-aligned with each other.

Abstract: A method of fabricating an edge coupling device and an edge coupling device are provided. The method includes removing a portion of cladding material to form a trench over an inversely tapered silicon waveguide, depositing a material having a refractive index greater than silicon dioxide over remaining portions of the cladding material and in the trench, and removing a portion of the material within the trench to form a ridge waveguide.

Abstract: A silicon waveguide comprising a waveguide core that comprises a first positively doped (P1) region vertically adjacent to a second positively doped (P2) region. The P2 region is more heavily positively doped than the P1 region. A first negatively doped (N1) region is vertically adjacent to a second negatively doped (N2) region. The N2 region is more heavily negatively doped than the N1 region. The N2 region and the P2 region are positioned vertically adjacent to form a positive-negative (PN) junction. The N1 region, the N2 region, the P1 region, and the P2 region are positioned as a vertical PN junction and configured to completely deplete the P2 region of positive ions and completely deplete the N2 region of negative ions when a voltage drop is applied across the N1 region, the N2 region, the P1 region, and the P2 region.

Abstract: A silicon waveguide comprising a waveguide core that comprises a first positively doped (P1) region vertically adjacent to a second positively doped (P2) region. The P2 region is more heavily positively doped than the P1 region. A first negatively doped (N1) region is vertically adjacent to a second negatively doped (N2) region. The N2 region is more heavily negatively doped than the N1 region. The N2 region and the P2 region are positioned vertically adjacent to form a positive-negative (PN) junction. The N1 region, the N2 region, the P1 region, and the P2 region are positioned as a vertical PN junction and configured to completely deplete the P2 region of positive ions and completely deplete the N2 region of negative ions when a voltage drop is applied across the N1 region, the N2 region, the P1 region, and the P2 region.

Abstract: An apparatus includes a first waveguide configured to receive an input signal. A section of the first waveguide has a length between a first initial point and a first end point. A first polarization rotator is located within the section at a first distance from the first initial point of the section of the first waveguide. A section of a second waveguide is configured to receive the input signal, and has the same length between the second initial point and a second end point. A second polarization rotator is located within the section of the second waveguide at a second distance from the second initial point of the section of the second waveguide. More particularly, a relative distance between the first distance and the second distance is configured to achieve a desired phase delay of an output signal from the first waveguide and an output signal from the second waveguide.

Abstract: A method of fabricating an edge coupling device and an edge coupling device are provided. The method includes removing a portion of cladding material to form a trench over an inversely tapered silicon waveguide, depositing a material having a refractive index greater than silicon dioxide over remaining portions of the cladding material and in the trench, and removing a portion of the material within the trench to form a ridge waveguide.

Abstract: An apparatus includes a first waveguide configured to receive an input signal. A section of the first waveguide has a length between a first initial point and a first end point. A first polarization rotator is located within the section at a first distance from the first initial point of the section of the first waveguide. A section of a second waveguide is configured to receive the input signal, and has the same length between the second initial point and a second end point. A second polarization rotator is located within the section of the second waveguide at a second distance from the second initial point of the section of the second waveguide. More particularly, a relative distance between the first distance and the second distance is configured to achieve a desired phase delay of an output signal from the first waveguide and an output signal from the second waveguide.

Abstract: A method of making a planar lightwave circuit (PLC) waveguide capable of being integrated with a surface-mounted component is presented. The method entails etching a silicon substrate to form a slanted wall, forming a nonreflective waveguide portion on the silicon substrate, and depositing a reflective layer on the slanted wall. Light travels through the nonreflective waveguide portion in substantially a first direction, and the light from the nonreflective waveguide portion strikes the reflective layer to be redirected in a second direction. The second direction may be the direction toward the surface-mounted component. A PLC waveguide device made with the above method is also presented.

Abstract: A method of making a planar lightwave circuit (PLC) waveguide capable of being integrated with a surface-mounted component is presented. The method entails etching a silicon substrate to form a slanted wall, forming a nonreflective waveguide portion on the silicon substrate, and depositing a reflective layer on the slanted wall. Light travels through the nonreflective waveguide portion in substantially a first direction, and the light from the nonreflective waveguide portion strikes the reflective layer to be redirected in a second direction. The second direction may be the direction toward the surface-mounted component. A PLC waveguide device made with the above method is also presented.

Abstract: A method of making a planar lightwave circuit (PLC) waveguide capable of being integrated with a surface-mounted component is presented. The method entails etching a silicon substrate to form a slanted wall, forming a nonreflective waveguide portion on the silicon substrate, and depositing a reflective layer on the slanted wall. Light travels through the nonreflective waveguide portion in substantially a first direction, and the light from the nonreflective waveguide portion strikes the reflective layer to be redirected in a second direction. The second direction may be the direction toward the surface-mounted component. A PLC waveguide device made with the above method is also presented.

Abstract: A method of making a planar lightwave circuit (PLC) waveguide capable of being integrated with a surface-mounted component is presented. The method entails etching a silicon substrate to form a slanted wall, forming a nonreflective waveguide portion on the silicon substrate, and depositing a reflective layer on the slanted wall. Light travels through the nonreflective waveguide portion in substantially a first direction, and the light from the nonreflective waveguide portion strikes the reflective layer to be redirected in a second direction. The second direction may be the direction toward the surface-mounted component. A PLC waveguide device made with the above method is also presented.