Monolithically integrated multiplexer transceiver based on etched diffraction grating

A diffraction grating and monolithic integration technology, applied in the coupling of optical waveguides, etc., can solve problems such as increasing system cost and increasing packaging difficulty, and achieve the effects of reducing coupling times, increasing integration, and reducing size

Inactive Publication Date: 2010-03-10
ZHEJIANG UNIV
View PDF0 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this device, the uplink 1310nm optical signal transmitter, that is, the laser needs to be placed on the chip by flip-chip (Flip-Chip) and other technologies, which increases the difficulty of packaging and increases the system cost.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Monolithically integrated multiplexer transceiver based on etched diffraction grating
  • Monolithically integrated multiplexer transceiver based on etched diffraction grating
  • Monolithically integrated multiplexer transceiver based on etched diffraction grating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0045] Figure 13 It is the second embodiment of the present invention, which differs from Embodiment 1 in that the laser is composed of an etched diffraction grating 1, a rear reflection end face 31 of the gain waveguide 3, the gain waveguide 3 and a passive ring resonator 33. The passive ring resonator 33 and the etched diffraction grating 1 together provide the mode selection function of the laser cavity. The passive ring resonator 33 has an extremely narrow Lorentzian filter line, but its disadvantage is that its transmission spectrum is periodic. Generally, there will be multiple transmission peaks within the range of the gain spectrum of the laser gain medium, making it difficult to achieve single-mode Work. Etching the diffraction grating 1 can filter out the surrounding transmission peaks and only retain the central transmission peak, so the passive ring resonator 33 and the etching diffraction grating 1 can provide high side mode suppression ratio and greatly improve...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a monolithically integrated multiplexer transceiver based on an etched diffraction grating, which mainly consists of an etched diffraction grating, an input and output waveguide, a gain waveguide and two multimode waveguide detectors. A downlink optical signal entering through the input and output waveguide is coupled to the two multimode waveguide detectors through the etched diffraction grating. The etched diffraction grating reflects one part of light emitted from the front head face of the gain waveguide back to the gain waveguide through a certain order of diffraction, and forms a resonant laser cavity for generating an uplink optical signal with the rear reflection head face of the gain waveguide. The etched diffraction grating reflects the other part of lightto the input and output waveguide through another order of diffraction at the same time to be further coupled in the optical fiber as the uplink optical signal for transmission. The invention truly realizes the monolithic integration, decreases the coupled times with the optical fiber, reduces the size, improves the integration and is applicable to the mass production.

Description

technical field [0001] The invention relates to a single-fiber multi-directional transceiver, in particular to an integrated single-fiber two-way and single-fiber three-way transceiver for fiber-to-the-home. Background technique [0002] With the emergence of high-bandwidth services such as video-on-demand, online games, and IPTV, users' demand for access bandwidth will further increase. capacity and security requirements. FTTH (fiber-to-the-home), as a final form of optical fiber access network development, can give full play to the huge potential of the optical fiber network and completely solve the bandwidth problem of user access. [0003] In FTTH application, mainly adopt two kinds of technologies. One is point-to-point optical access technology (P2P technology), and the other is point-to-multipoint PON technology (passive optical network technology), see figure 1 . Among them, PON technology is recognized by the industry as the best solution to realize FTTH. It ca...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/42
Inventor 王磊何建军
Owner ZHEJIANG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap