Article comprising temperature-compensated tunable grating and s

Details Article comprising temperature-compensated tunable grating and s Article comprising temperature-compensated tunable grating and s

1998-10-26

2000-08-22

Ngo, Hung N.

Optical waveguides

With optical coupler

Input/output coupler

385 24, G02B 634

Patent

active

061084700

ABSTRACT:
A temperature-compensated tunable optical waveguide grating device comprises a length of optical waveguide grating including an optical grating region, a guiding tube or frame mechanically coupled to the waveguide at one end of the grating region, and mechanically coupled to the waveguide at the other end of the grating region, a movable element responsive to control signals for applying adjustable strain across the grating region, thereby tuning the grating. The device further comprises a temperature-compensating element for modulating the strain in proportion to changes in temperature, thereby temperature compensating the device. Advantageously the waveguide is an optical fiber and the movable element is a movable magnet.
The inventive device can reduce the temperature-dependent wavelength change to less than 0.5 nm/100 deg. C., and advantageously less than 0.05 nm/100 deg. C. In an advantageous embodiment, the packaging assembly also includes a fine wavelength-adjusting mechanism for post-assembly corrective tuning. The device is especially useful in WDM communication systems, particularly for adding or dropping channels, for dynamically gain-equalizing optical amplifiers and for dispersion compensation.

REFERENCES:
patent: 5781677 (1998-07-01), Jin et al.
patent: 5812711 (1998-09-01), Glass et al.
patent: 5999546 (1999-12-01), Espindola et al.
patent: 5999671 (1999-12-01), Jin et al.

Affiliated with

Also associated with

Rating

Article comprising temperature-compensated tunable grating and s does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Article comprising temperature-compensated tunable grating and s, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Article comprising temperature-compensated tunable grating and s will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-590899