Compact hybrid integrated optical dynamic channel equalizer

Details Compact hybrid integrated optical dynamic channel equalizer Compact hybrid integrated optical dynamic channel equalizer

2005-07-12

2005-07-12

Lee, John D. (Department: 2874)

Optical waveguides

Accessories

Attenuator

C385S014000, C385S024000

Reexamination Certificate

active

06917747

ABSTRACT:
An integrated optical dynamic channel equalizer that can be employed to equalize the channel gain level in a WDM transmission line and monitor the optical channel performance. The device consists of a circulator, a dynamic gain equalizer chip and a controller. Due to the simplicity of the dynamic gain equalizer chip, which includes one 1×n multiplexer/demultiplexer, an n-channel variable optical attenuator array (VOA-n), a partially transparent dielectric reflective means and an n-channel detector array, the device is very compact and can be fabricated at low cost. By placing a quarter wave plate between the n-channel variable optical attenuator array and the partially transparent reflective means in the dynamic channel equalizer chip, the device can be rendered polarization insensitive.

REFERENCES:
patent: 5815299 (1998-09-01), Bayart et al.
patent: 5923472 (1999-07-01), Bergmann
patent: 5933270 (1999-08-01), Toyohara
patent: 6144784 (2000-11-01), Shigehara et al.
patent: 6345133 (2002-02-01), Morozov
patent: 6487336 (2002-11-01), Yao

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