Invention Grant
- Patent Title: Optical transmitter
- Patent Title (中): 光发射机
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Application No.: US11205798Application Date: 2005-08-17
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Publication No.: US07103239B2Publication Date: 2006-09-05
- Inventor: Fred A. Kish, Jr. , Charles H. Joyner , David F. Welch , Robert B. Taylor , Alan C. Nilsson
- Applicant: Fred A. Kish, Jr. , Charles H. Joyner , David F. Welch , Robert B. Taylor , Alan C. Nilsson
- Applicant Address: US CA Sunnyvale
- Assignee: Infinera Corporation
- Current Assignee: Infinera Corporation
- Current Assignee Address: US CA Sunnyvale
- Agent W. Douglas Carothers, Jr.
- Main IPC: G02B6/12
- IPC: G02B6/12

Abstract:
An optical transmitter comprises a monolithic transmitter photonic integrated circuit (TxPIC) chip that includes an array of modulated sources formed on the PIC chip and having different operating wavelengths approximating a standardized wavelength grid and providing signal outputs of different wavelengths. A wavelength selective combiner is formed on the PIC chip having a wavelength grid passband response approximating the wavelength grid of the standardized wavelength grid. The signal outputs of the modulated sources optically coupled to inputs of the wavelength selective combiner to produce a combined signal output from the combiner. A first wavelength tuning element coupled to each of the modulated sources and a second wavelength tuning element coupled to the wavelength selective combiner. A wavelength monitoring unit is coupled to the wavelength selective combiner to sample the combined signal output. A wavelength control system coupled to the first and second wavelength tuning elements and to said wavelength monitoring unit to receive the sampled combined signal output. The wavelength control system adjusts the respective wavelengths of operation of the modulated sources to approximate or to be chirped to the standardized wavelength grid and for adjusting the optical combiner wavelength grid passband response to approximate the standardized wavelength grid.
Public/Granted literature
- US20050286909A1 Optical transmitter Public/Granted day:2005-12-29
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