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Tunable laser with multiple in-line sections

A technology for tuning lasers and lasers, which is applied to lasers, semiconductor lasers, laser components, etc., and can solve problems such as low-cost tunable lasers

Active Publication Date: 2016-03-02
APPLIED OPTOELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, inexpensive tunable lasers often encounter challenges when used to cover a relatively wide range of channels (e.g., 16 channels) in WDM-PON

Method used

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  • Tunable laser with multiple in-line sections
  • Tunable laser with multiple in-line sections
  • Tunable laser with multiple in-line sections

Examples

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Embodiment Construction

[0021] Tunable lasers having multiple sequential segments consistent with embodiments described herein generally include a semiconductor laser body having multiple sequential laser segments each configured to be independently driven to produce a wavelength in a different respective wavelength range laser. In response to the temperature change, the wavelength of light generated in each of the laser sections is tuned to a channel wavelength within the respective wavelength range. Laser light generated by each selected one of the laser segments is emitted from the front facet of the laser body. By selectively generating light in one or more of the laser sections, one or more channel wavelengths are selected for lasing and transmission.

[0022] For example, a tunable laser with multiple sequential segments can be used in a tunable transmitter to generate optical signals at selected channel wavelengths and / or to generate and combine multiple different channels in a multiplexed op...

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Abstract

A tunable laser with multiple in-line sections generally includes a semiconductor laser body with a plurality of in-line laser sections each configured to be driven independently to generate laser light at a wavelength within a different respective wavelength range. The wavelength of the light generated in each of the laser sections may be tuned, in response to a temperature change, to a channel wavelength within the respective wavelength range. The laser light generated in each selected one of the laser sections is emitted from a front facet of the laser body. By selectively generating light in one or more of the laser sections, one or more channel wavelengths may be selected for lasing and transmission. The tunable laser with multiple in-line sections may be used, for example, in a tunable transmitter in an optical networking unit (ONU) in a WDM passive optical network (PON) to select a transmission channel wavelength.

Description

technical field [0001] The present invention relates to a tunable laser, in particular a tunable laser having a plurality of sequential segments configured to be tuned in a plurality of different ranges of channel wavelengths for wavelength division multiplexed (wavelength division multiplexed; WDM) passive A tunable transmitter or transceiver in an optical network (Passive Optical Network; PON). Background technique [0002] Optical communication networks used to be typically "point-to-point" types of networks consisting of transmitters and receivers connected by optical fibers. Such a network is relatively easy to construct, but is equipped with many optical fibers to connect multiple users. As the number of users connected to this network increases and the number of fibers increases rapidly, provisioning and managing the many fibers becomes complex and expensive. [0003] Passive optical networks solve this problem by using a single "trunk" fiber from the transmitting e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J14/02H01S5/42H01S5/323
CPCH01S5/06258H01S5/1215H01S5/4031H01S5/1246H01S5/0612H01S5/4087H01S5/0287H01S5/06246H04J14/0245H04B10/572
Inventor 郑军克劳斯·亚历山大·安索姆汪谊何宜龙张焕琳迪恩·麦因托希朵希
Owner APPLIED OPTOELECTRONICS
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