Adjustable-wavelength emitter for TWDM-PON and light network path unit

A technology of TWDM-PON and transmitter, which is applied in the field of optical network, can solve the problems that the modulation rate cannot reach 10Gb/s, limit the uplink speed of the optical network unit, and the wavelength tuning range is small, so as to reduce the manufacturing cost and complicate the system structure degree of effect

Active Publication Date: 2014-12-31
ALCATEL LUCENT SHANGHAI BELL CO LTD
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Problems solved by technology

Current lasers include tunable DFB lasers, external injection-locked and self-injection lasers. Tunable DFBs require temperature control to tune the wavelength. The wavelength tuning range is very small, and the modulation rate is generally less than 10Gb / s. The other two have other disadvantages , its modulation rate cannot reach 10Gb / s or higher, which limits the uplink speed of traditional optical network units, which is obviously not the most ideal for today's increasingly expanding data

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  • Adjustable-wavelength emitter for TWDM-PON and light network path unit
  • Adjustable-wavelength emitter for TWDM-PON and light network path unit
  • Adjustable-wavelength emitter for TWDM-PON and light network path unit

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Embodiment Construction

[0039] In the following detailed description of the preferred embodiment, reference is made to the accompanying drawings which form a part hereof. The accompanying drawings show, by way of example, specific embodiments in which the invention can be practiced. The illustrated embodiments are not intended to be exhaustive of all embodiments in accordance with the invention. It is to be understood that other embodiments may be utilized and structural or logical changes may be made without departing from the scope of the present invention. Accordingly, the following detailed description is not limiting, and the scope of the invention is defined by the appended claims.

[0040] According to a first aspect of the present invention, a wavelength-tunable transmitter 100 for TWDM-PON with symmetrical bandwidth is proposed, which includes:

[0041] A multimode transmitter 110, which outputs an optical signal comprising a plurality of longitudinal modes;

[0042] An optical circulator...

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Abstract

The invention relates to an adjustable-wavelength emitter (100) for a TWDM-PON. The adjustable-wavelength emitter comprises a multi-mode emitter (110) outputting an optical signal containing multiple longitudinal modes, an optical annular device (120) having a first port used for receiving the optical signal of the multi-mode emitter, a second port used for outputting the optical signal and a third port, and a first micro ring resonator (130) having a first input end used for receiving the optical signal from the second port, a first output end used for outputting a first component of a resonance portion of the optical signal and a second output end used for outputting a second component of the resonance portion of the optical signal, wherein the second output end is connected with the third port of the optical annular device (120).

Description

technical field [0001] The present invention relates to optical network technology, more specifically, relates to a wavelength-tunable transmitter for TWDM-PON with symmetrical bandwidth and an optical network unit containing the wavelength-tunable transmitter. Background technique [0002] Today, Hybrid Time and Wavelength Division Multiplexing Passive Optical Access Network (Hybrid Time and Wavelength Division Multiplexing Passive Optical Access Network: TWDM-PON) has been selected by the FSAN Association in April 2012 for NGPON2, the next generation The main solution for passive optical access network. Thanks to its unique features, such as high system capacity, flexible bandwidth allocation, improved power efficiency, etc., TWDM-PON is easier to be accepted by global suppliers and equipment providers than other candidate solutions , which means that TWDM-PON will be more and more used. [0003] The traditional XG-PON system provides a downlink 10Gb / s and an uplink 2.5G...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/572H04Q11/00
CPCH04B10/506H01S5/0612H01S5/1032H01S5/141H04B10/572H04J14/02
Inventor 高震森
Owner ALCATEL LUCENT SHANGHAI BELL CO LTD
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