Peter Chen

6363190, Mar 26, 2002

Feb 11, 2000

09/502973

Peter Z. Chen - Santa Clara CA

New Focus, Inc. - Santa Clara CA

G02B 626

385 43, 385 42

Disclosed is a fiber optic coupler which includes a fused, stretched, and twisted biconical tapered region; a first pair of fiber pigtail ends extending from a first end of said biconical tapered region; a second pair of fiber pigtail ends extending from a second end of said biconical tapered region; and polarization dependent loss preclusion means disposed within said biconical tapered region. Further disclosed is a method for forming the polarization insensitive coupler as described.

6449402, Sep 10, 2002

Jul 18, 2000

09/617790

R. Brad Bettman - Mountain View CA
Ping Xie - San Jose CA
Peter Zupei Chen - Santa Clara CA

Finisar Corporation - Sunnyvale CA

G02B 634

385 15, 385 37

A method and apparatus for compensating an optical filter is disclosed. The device substantially maintains the selected center wavelength in the optical filter across a range of operating temperatures. In an embodiment of the invention an optical filter is disclosed for filtering a selected channel among a plurality of multiplexed channels of an optical communication. The optical filter includes an optical fiber and an elongate housing. The optical fiber has a first side and a second side and a filter portion intermediate the first side and the second side, and the optical fiber for transmitting the multiplexed optical communication and the filter portion for filtering the selected channel. The elongate housing includes exposed end portions through which the optical fiber extends. The optical fiber is affixed at each exposed end portion.

6493486, Dec 10, 2002

Feb 17, 2000

09/507119

Peter Chen - Fremont CA

Finisar Corporation - Sunnyvale CA

G02B 634

385 37

Various aspects of thermal compensated Bragg grating filters are disclosed. In one disclosed aspect, an optical fiber having a Bragg grating therein is laid adjacent to a torsion member, and the two are then rigidly affixed between a torsion adjusting member and a compensating member. The torsion adjusting member may then be rotated, twisting the optical fiber around the torsion member, and thus applying torsion to the optical fiber containing the Bragg grating, and changing the period of the Bragg grating. A further disclosed aspect provides an optical fiber, containing a Bragg grating filter therein, which is rigidly affixed between a torsion adjusting member and a compensating member in an axis other than the compensating members longitudinal axis. The torsion adjusting member may then be rotated to apply torsion to the optical fiber, and change the period of the Bragg grating. Another disclosed aspect comprises an optical fiber, containing a Bragg grating filter therein, and a compensating member having a desired thermal coefficient of expansion.

6546164, Apr 8, 2003

Jul 7, 2000

09/612068

Peter Zupei Chen - Santa Clara CA

Finisar Corporation - Sunnyvale CA

G02B 628

385 24, 385 32, 385 42, 385 43, 385 45, 359115, 359124

A miniature dense wavelength division multiplexer (DWDM) is disclosed. A plurality of multi-window wavelength multiplexers (MWDM) are cascaded and optically coupled to form a tree, and each of the MWMDMs forming the tree comprises a microbend coupler. The forming of the MWDM tree is characterized by the absence of the bending of optical fibers external to the microbend couplers. A finished DWDM assembly measures less than 50 mm in width.

6546168, Apr 8, 2003

Dec 10, 1999

09/458869

Ping Xie - San Jose CA
Yonglin Huang - San Jose CA
Peter Zupei Chen - Santa Clara CA

Finisar Corporation - Sunnyvale CA

G02B 626

385 39, 385 24, 385 48

Disclosed are fiber optic devices. The fiber optic devices disclosed include integrated fiber optic coupler-isolator combinations. These combinations are especially applicable to fiber optic tapping and pumping arrangements. By integrating such devices into a housed subassembly, enhanced size and design characteristics are achieved.

6560388, May 6, 2003

Dec 22, 1999

09/471583

Peter Z. Chen - Santa Clara CA

Finisar Corporation - Sunnyvale CA

G02B 626

385 43, 385 32, 385 45, 385 48

Disclosed is a microbend fiber optic coupler and a method of forming same. The microbend fiber optic coupler includes two pairs of pigtail ends oriented one beside the other and having a bent fused biconically tapered coupling region interposed therebetween.

6731842, May 4, 2004

Jan 16, 2003

10/345770

Peter Z. Chen - Santa Clara CA

Finisar Corporation - Sunnyvale CA

G02B 626

385 43, 385 32, 385 45, 385 48, 385 31

Disclosed is a microbend fiber optic coupler and a method of forming same. The microbend fiber optic coupler includes two pairs of pigtail ends oriented one beside the other and having a bent fused biconically tapered coupling region interposed therebetween.

6797646, Sep 28, 2004

Jan 12, 2001

09/759854

Christopher Ngai - Burlingame CA
Christopher D. Bencher - Sunnyvale CA
Joe Feng - Cupertino CA
Peter Chen - San Francisco CA

Applied Materials Inc. - Santa Clara CA

H01L 2131

438778, 438784, 438787, 438788

Embodiments of the present invention provide nitrogen doping of a fluorinated silicate glass (FSG) layer to improve adhesion between the nitrogen-containing FSG layer and other layers such as barrier layers. In some embodiments, a nitrogen-containing FSG layer is deposited on a substrate in a process chamber by supplying a gaseous mixture to the process chamber. The gaseous mixture comprises a silicon-containing gas, a fluorine-containing gas, an oxygen-containing gas, and a nitrogen-containing gas. Energy is provided to the gaseous mixture to deposit the nitrogen-containing FSG layer onto the substrate. A plasma may be formed from the gaseous mixture to deposit the layer. In some embodiments, an FSG film that has been formed is doped with nitrogen by a plasma treatment using a nitrogen-containing chemistry. For example, nitrogen ashing in a damascene process may introduce nitrogen dopants into the surface of the FSG layer. The nitrogen-containing FSG layer exhibits good adhesion with barrier layers for copper such as those including tantalum, tantalum nitride, or the like.