Title:
APPARATUS AND METHODS FOR RECONFIGURABLE OPTICAL RECEIVERS
Document Type and Number:
WIPO Patent Application WO/2017/023384
Kind Code:
A3
Abstract:
An optical receiver includes a cascade of optical filtering elements, each of which selects spectral components from incoming optical signals at a wavelengths aligned to filter passbands. The selected spectral components may be optically combined to form k pairs of intermediary signals, where k= log2(M). By comparing the k pairs of intermediary signals, k bits of a digital signal representing the incident signal may be generated. The filtering elements may be configured to perform demultiplexing and demodulation simultaneously, increasing functionality and reducing excess losses. The filtering elements may also be tuned so that the optical receiver may be reconfigured to accommodate different combinations of wavelengths and modulation formats, such as wavelength division multiplexed (WDM) on off keying (OOK), M-ary orthogonal formats including frequency shift keying (FSK) and pulse position modulation (PPM), differential phase shift keying, and hybrid combinations - providing rate and format flexibility and WDM scalability.
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Inventors:
CAPLAN DAVID O (US)
WATTS MICHAEL R (US)
SU ZHAN (US)
WATTS MICHAEL R (US)
SU ZHAN (US)
Application Number:
PCT/US2016/031136
Publication Date:
March 16, 2017
Filing Date:
May 06, 2016
Export Citation:
Assignee:
MASSACHUSETTS INST TECHNOLOGY (US)
International Classes:
G01J3/18
Foreign References:
| US20120281990A1 | 2012-11-08 | |||
| US20080193133A1 | 2008-08-14 | |||
| US20110235667A1 | 2011-09-29 | |||
| US20040228635A1 | 2004-11-18 |
Attorney, Agent or Firm:
TEJA, Joseph, Jr. et al. (US)
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