Low relative intensity noise fiber grating type laser diode

Details Low relative intensity noise fiber grating type laser diode Low relative intensity noise fiber grating type laser diode

2007-01-02

2007-01-02

Harvey, Minsun (Department: 2828)

Coherent light generators

Particular component circuitry

Having noise suppression circuitry

C372S006000, C372S029020, C372S029011

Reexamination Certificate

active

10779469

ABSTRACT:
The dependency of intensity noise is used to determine the wavelength difference between a laser diode gain peak and a reflection peak of a fiber grating in a fiber grating type laser diode. Monitoring and determining the relative noise intensity of such a laser enables the control of the laser diode or the fiber grating such that the intensity noise is as low as possible. Such an approach enables the use of a fiber grating type laser diode as Raman pumps in high-speed transmission systems where low intensity noise is a requirement, especially when the Raman pump power propagates in the same direction as the transmission signals (known as Raman co-pumps).

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patent: 2004/0136053 (2004-07-01), Sugiya
patent: 05250508 (2005-06-01), None
Dogru N et al: “Effect of intensity noise on mode-locked hybrid soliton pulse source” Optics Communications, North-Holland Publishing Co. Amsterdam, NL, vol. 220, No. 1-3 May 1, 2003, pp. 97-104, XP004422620 ISSN: 0030-4018.

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