Optical apparatus which uses a virtually imaged phased array to

Details Optical apparatus which uses a virtually imaged phased array to Optical apparatus which uses a virtually imaged phased array to

1997-08-13

1999-10-19

Spyrou, Cassandra

Optical: systems and elements

Light interference

359615, 359839, 359857, 372 25, G02B 2700, G02B 504, H01S 310

Patent

active

059698659

ABSTRACT:
An apparatus which adds "opposite dispersion" to light, to compensate for chromatic dispersion of the light caused by travelling through an optical fiber. The apparatus includes a virtually imaged phased array (VIPA), and a light returning device. The VIPA provides angular dispersion to the light, and the light returning device returns the light back to the VIPA to undergo multiple reflection inside the VIPA. The light returning device is typically a mirror. In this case, the mirror can be shaped so that the apparatus adds a constant dispersion to the light. Moreover, a lens can be positioned between the VIPA and the light returning device so that (a) the light travels from the VIPA to the light returning device by travelling from the VIPA to the lens and then being focused by the lens to the light returning device, (b) the light returns from the light returning device to the VIPA by travelling from the light returning device to the lens and then being directed by the lens to the VIPA, and (c) the light travelling from the VIPA to the lens is parallel with the returned light travelling from the lens to the VIPA.

REFERENCES:
patent: 3832030 (1974-08-01), Gloge
patent: 4655547 (1987-04-01), Heritage et al.
patent: 4820019 (1989-04-01), Yoshida et al.
patent: 5071225 (1991-12-01), Inoue
patent: 5119454 (1992-06-01), McMahon
patent: 5309456 (1994-05-01), Horton
patent: 5715095 (1998-02-01), Hiratsuka et al.
patent: 5786915 (1998-07-01), Scobey
M. Shirasaki, Large Angular-Dispersion By Virtually-Imaged Phased-Array (VIPA) and Its Application to Wavelength Demultiplexing, MOC '95, Hiroshima, Oct. 1995.
M. Shirasaki, Large Angular Dispersion by a Virtually-Imaged Phased Array and its Application to a Wavelength Demultiplexer, Optics Letters, vol. 21, No. 5, Mar. 1996.
M. Shirasaki, Temperature Independent Interferometer For WDM Filters, Paper WeD.1.6 ECOC '96 (European Conference on Optical Communication), Sep. 18, 1996.
M. Shirasaki, Filtering Characteristics of Virtually-Imaged Phased Array , Presented at IPR (Integrated Photonics Research) Topical Meeting Paper IMC3, Apr. 29, 1996, Boston, MA.

Affiliated with

Also associated with

Rating

Optical apparatus which uses a virtually imaged phased array to does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Optical apparatus which uses a virtually imaged phased array to , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical apparatus which uses a virtually imaged phased array to will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2063576