15 results about "Polymer waveguide" patented technology

This invention relates to a method for fabricating a low insertion loss spatial multiplexer / demultiplexer for multi-core optical fibers, belonging to the field of multi-core optical fiber communication technology. By using single-core fibers of different core diameters at the splice points, this invention effectively improves the fault tolerance of the multiplexer's core arrangement while reducing optical signal leakage at the splice points, thereby reducing insertion loss. This allows for the multiplexing of signals from single-core fibers into multi-core fibers at the input end and the demultiplexing of signals from multi-core fibers into single-core fibers at the output end. The spatial multiplexing / demultiplexer device prepared using this method exhibits lower insertion loss compared to the traditional bundled method, and is simpler and less expensive to operate than polymer waveguide and fused taper methods. The prepared spatial multiplexer / demultiplexer is small, flexible, durable, and suitable for mass production.

This invention relates to the field of polymer waveguide fabrication technology, specifically disclosing a method for processing a 45° micromirror on the end face of a polymer waveguide, comprising the following steps: Step S1: Determining the forming quality characterization of the 45° micromirror on the end face of the polymer waveguide; Step S2: Determining the initial range of influencing factors affecting the quality of the 45° micromirror on the end face of the polymer waveguide fabricated by femtosecond laser; Step S3: Determining the laser incident mode, using a waveguide substrate tilted at 45° to the horizontal plane, with the laser incident perpendicular to the horizontal plane; Step S4: Optimizing the influencing factors to obtain the optimal parameter combination; Step S5: Conducting experiments with the optimal parameter combination, detecting and analyzing the experimental results. The femtosecond laser fabrication of the 45° micromirror on the end face of the waveguide of this invention results in small surface roughness and angle deviation, leading to higher integration, greater transmission efficiency, and lower coupling loss in the link formed by coupling the polymer waveguide and optical transceiver devices.

The invention relates to the technical field of polymer waveguide preparation, and particularly discloses a processing method of a polymer waveguide end face 45-degree micromirror, which specifically comprises the following steps: S1, determining the forming quality representation of the polymer waveguide end face 45-degree micromirror; s2, determining an initial range of influence factors influencing the quality of the polymer waveguide end face 45-degree micromirror manufactured by the femtosecond laser; s3, a laser incidence mode is determined, the waveguide substrate is arranged to be inclined by 45 degrees relative to the horizontal plane, and laser is incident in the mode of being perpendicular to the horizontal plane; s4, carrying out influence factor optimization to obtain an optimal parameter combination; and S5, carrying out a test by using the optimal parameter combination, and detecting and analyzing a test result. The surface roughness and the angular deviation of the waveguide end face 45-degree micromirror manufactured by femtosecond laser are small, so that a link formed by coupling and connecting the polymer waveguide and an optical transceiver is higher in integration level, higher in transmission efficiency and smaller in coupling loss.

The invention provides an on-chip integrated interconnection structure which comprises a calculation module integrated on the same substrate, a plurality of photoelectric co-packaging modules and coarse wavelength division multiplexers, the photoelectric co-packaging modules and the coarse wavelength division multiplexers are stacked around the calculation module, and the calculation module and the photoelectric co-packaging modules are electrically interconnected through a rewiring layer. And the photoelectric co-packaging module and the coarse wavelength division multiplexer realize optical interconnection through a polymer waveguide. According to the on-chip integrated interconnection structure provided by the invention, the photoelectric co-packaging module, the coarse wavelength division multiplexer and the calculation module are interconnected and packaged and integrated together, so that an optical in-out integrated optical communication module is realized; moreover, the photoelectric co-packaging module and the coarse wavelength division multiplexer are connected through the polymer waveguide, the problem that the packaging density is limited due to the size limitation of existing optical fiber interconnection is solved through the small size of the polymer waveguide, and the packaging density is effectively improved.

The application discloses a mode-insensitive optical switch based on an organic polymer waveguide and belongs to the technical field of mode-insensitive optical switches.The mode-insensitive optical switch is composed of a substrate, a polymer waveguide lower cladding layer, a rectangular polymer optical waveguide core layer, a polymer waveguide upper cladding layer, a first graphene capacitor and a second graphene capacitor.The polymer waveguide lower cladding layer is prepared on the substrate, the polymer waveguide upper cladding layer is prepared on the polymer waveguide lower cladding layer, and the rectangular polymer optical waveguide core layer is covered in the polymer waveguide lower cladding layer and the polymer waveguide upper cladding layer.The optical switch adopts a polymer material to design a waveguide structure, graphene is used as a modulation electrode and is buried in the waveguide, through designing a graphene capacitor electrode structure and optimizing a buried position, simultaneous modulation and switching of TE 11 , TE 21 , TE 12 and TE 22 modes can be realized, and the preparation process is compatible with a traditional CMOS process and is easy to integrate.

The invention relates to the technical field of semiconductor technologies, and discloses a hybrid integrated optical gyroscope chip, a preparation method and an optical gyroscope, the hybrid integrated optical gyroscope chip comprises a multifunctional optical module, a light emitting module, a circuit module, a detector module and an optical fiber which are arranged in a multi-layer stacking manner along a first direction; wherein the light emitting module is provided with a first coupling port, the detector module is provided with a second coupling port, and the multifunctional optical module is provided with a third coupling port and a fourth coupling port. At least one of the following conditions is satisfied: the first coupling port and the third coupling port are connected through a first three-dimensional polymer waveguide; the second coupling port and the third coupling port are connected through a second three-dimensional polymer waveguide; and the fourth coupling port is connected with the optical fiber through a third three-dimensional polymer waveguide. The hybrid integrated optical gyroscope chip is small in size and has excellent thermal mechanical stability and measurement accuracy.

This invention relates to a highly symmetric, wide-bandwidth flexible arrayed waveguide grating chip for FBG demodulation systems, belonging to the field of planar optical waveguide device technology. It comprises a polymer flexible substrate, a polymer lower cladding, a polymer waveguide core, and a polymer upper cladding. The refractive indices of the polymer upper and lower cladding materials are lower than those of the polymer waveguide core material. The polymer waveguide core is an optical waveguide structure integrated from two AWG and two MMI units. This invention solves the defects of existing arrayed waveguide gratings in FBG demodulation systems, such as demodulation blind zones and unidirectional transmission. It achieves demodulation with a wide dynamic range and high resolution for reflected wavelengths and supports bidirectional signal input and output at both ports, improving system flexibility. Furthermore, the use of polymer materials to fabricate optical waveguide devices offers significant advantages over inorganic material systems, including better flexibility, simpler processing, lower cost, and higher efficiency, making it suitable for dynamic deformation environments or bio-integrated scenarios.

A multi-channel optical power divider based on an MMI structure and its fabrication method are disclosed, belonging to the field of planar optical waveguide devices and their fabrication technology. From bottom to top, it consists of a silicon substrate, a polymer lower cladding, a strip-shaped polymer waveguide core layer, and a polymer upper cladding. The strip-shaped polymer waveguide core layer is based on an MMI structure and is encased within the polymer upper cladding. This waveguide-type power divider combines the advantages of large process tolerance and small size of MMI optical waveguide structures with the advantage of a wide variety of organic polymer materials, achieving the goal of equal power distribution across multiple different input ports. Furthermore, the fabrication process using polymer materials is relatively simple, requiring only conventional processes such as spin coating and photolithography, without the need for more complex processes. Moreover, it boasts low production costs, high efficiency, and the ability to be mass-produced, making it a practically applicable power divider.

The invention discloses an intracranial peripheral heart multifunctional pacing guide wire based on optical fiber sensing, and relates to the field of medical instruments, and the pacing guide wire comprises a near-end interface section, a middle sensing section and a far-end sensing section which are sequentially connected from the near end to the far end; the middle sensing section comprises a layered coaxial structure, and the layered coaxial structure comprises a core layer, a sensing waveguide layer wrapping the core layer, a conductive layer wrapping the sensing waveguide layer and a lubricating layer wrapping the conductive layer from inside to outside; a polymer waveguide extending in the axial direction of the guide wire is arranged in the sensing waveguide layer, and the track of the polymer waveguide is a three-dimensional spiral line. The three-dimensional spiral polymer waveguide is integrated in the sensing waveguide layer, the intuition and reliability of navigation can be remarkably improved, information guarantee is provided for the pacing electrode to accurately reach and stably abut against the heart target spot, and therefore the success rate and safety of an operation are improved.

A wideband photonic bump (WBB) comprising: a positive taper of a polymer waveguide, a curved mirror formed on a surface of the WBB, and a tilted flat mirror; the positive taper of the polymer waveguide is configured to further expand a light beam from an anti-taper to match a fiber mode of an optical fiber; the curved mirror is configured to reflect the light beam from the optical fiber; the tilted flat mirror is configured to direct the reflected light beam to an external optical fiber, wherein the WBB is coupled on a surface of a photonic integrated circuit (PIC).

The application discloses a polymer-based stress sensing photonic device, which adopts an optical sensing mode to monitor stress and comprises a polymer-based upper cladding layer, a lower cladding layer and a polymer waveguide Bragg grating core layer arranged in the upper and lower cladding layers; through selection of materials and film thickness, stress-induced effective refractive index change is far less than stress-induced grating period length change, so that stress-induced effective refractive index change is ignored, and central wavelength change is linearly related to grating period length change; results show that the stress sensing photonic device can detect stress in a range of 0-20kPa, has a sensitivity of not less than 2nm / kPa and an accuracy of 1kPa. Compared with the prior art, the polymer-based stress sensing photonic device has the advantages of anti-electromagnetic interference, high sensitivity, good output linearity and easy integration.

A mode-insensitive 3×6 optical power divider based on an MMI structure and its fabrication method are disclosed, belonging to the field of optical power divider and fabrication technology. From bottom to top, it consists of a silicon substrate, a polymer lower cladding, a polymer waveguide core layer, and a polymer upper cladding. The polymer waveguide core layer is completely encapsulated within the polymer upper cladding, and its refractive index is greater than that of the polymer upper and cladding layers. Based on a four-cascaded MMI waveguide structure, the polymer waveguide core layer enables equal power distribution of both modes of optical power input from the three input ports across the six output ports, achieving mode insensitivity and allowing simultaneous power allocation for the fundamental mode and higher-order modes. This breaks away from traditional power dividers that can only input one port, as the three input ports further increase communication capacity. The device can be applied in mode-division multiplexing systems, enabling practical applications and large-scale mass production.

The invention discloses a low-power-consumption silicon dioxide polymer mixed integrated optical switch and a preparation method thereof, and belongs to the technical field of silicon dioxide / polymer mixed optical integrated chips. The waveguide consists of a substrate, a waveguide lower cladding layer, a waveguide core layer, a waveguide upper cladding layer and a metal electrode in sequence from bottom to top, the waveguide core layer is a 1 * 1 optical switch structure, a 2 * 2 optical switch structure or a switch array formed by the 1 * 1 optical switch structure, the 2 * 2 optical switch structure and the 2 * 2 optical switch structure, and the metal electrode is prepared on the waveguide upper cladding right above the optical switch first modulation arm waveguide. The advantages of silicon dioxide / polymer material platforms are fused to a great extent, the defects of the silicon dioxide / polymer material platforms are overcome, the characteristics of low loss of silicon dioxide waveguides and low power consumption of polymer waveguides are integrated, and the performance bottleneck of a single material is broken through; the waveguide structure and process provided by the invention are flexible and stable, are compatible with the existing CMOS process, have the advantages of low power consumption, low loss, low cost and the like, and have wide application prospects in the fields of optical communication, optical calculation and photon integration.

The invention discloses a test tool and a test method for polymer waveguide loss. The polymer waveguide loss test tool comprises at least one probe and at least one radiation structure, the radiation structure comprises a radiator and a feed part, and the radiator is connected with the feed part; the first end of the probe is used for being in contact with the feed part, and the radiator is used for being coupled with the polymer waveguide; and the test equipment is connected with the second end of the probe and is used for testing the loss of the polymer waveguide. According to the invention, the accuracy of the polymer waveguide loss test and the comprehensiveness of frequency coverage can be improved.

The application discloses a D-type single-mode optical fiber on-surface integrated taper polymer waveguide structure and a processing method, and belongs to the field of all-fiber integrated optical devices. The application optimizes the side wall inclination angle of a polished area of a D-type optical fiber and the length of a taper optical fiber gradual change area by using an intrinsic mode expansion method, improves the coupling efficiency from a fiber core to a micro-nano waveguide, and optimizes the transmittance from 0.06 to 0.64. The micro-nano waveguide is supported by the waveguide of the gradual change area to be suspended, and mode crosstalk is reduced. The fiber core is completely exposed by polishing the D-type single-mode optical fiber, and a sufficient flat polished area is reserved as a substrate, so that the optical structure expandability and robustness are significantly improved. Femtosecond laser ablation is used to polish the side of the single-mode optical fiber, the D-type single-mode optical fiber with different side wall inclination angles is manufactured, and the femtosecond laser two-photon polymerization technology can be used to print the taper waveguide with high precision in the polished area. The application has the advantages of high integration, high coupling efficiency, strong expandability and high robustness.