08/06/2025
 
hQphotonics President and cofounder, Dr. Jiang Li presented a talk at the 2025 Optica NLO conference.
 
NLO Conference paper number W3A.5: Spiral Resonator Referenced on-Chip low Noise Microwave Generation 
ABSTRACT
Dual lasers are co-locked to a spiral resonator and their relative phase noise is frequency-divided down to the microwave domain via an integrated electro-optic frequency comb. Record-low phase noise is achieved for chip-based oscillators.
07/01/2025

Our paper on advancing chip-scale low phase noise photonic microwave oscillators is now published in Photonics Research. A new record-low phase noise has been achieved for chip-scale oscillators (-69 dBc/Hz at 10 Hz offset, and -144 dBc/Hz at 10 kHz offset for a 10 GHz carrier scaled from 37.3 GHz output). 
 
Long Cheng, Mengdi Zhao, Yang He, Yu Zhang, Roy Meade, Kerry Vahala, Mian Zhang, and Jiang Li, "Spiral resonator referenced low noise microwave generation via integrated optical frequency division," Photon. Res. 13, 1991-1996 (2025)
 
https://opg.optica.org/prj/fulltext.cfm?uri=prj-13-7-1991&id=573492

05/06/2025

hQphotonics is an exhibitor at the CLEO 2025 conference at Long Beach, CA from May 6th to May 8th, 2025.  hQphotonics releases the following new products:
  • Ultra-high-Q silicon nitride resonators and spiral reference cavities, with packaged fiber pigtails 
  • High repetition rate frequency combs with repetition rates 5 - 50 GHz (factory set, pre-order available now)

05/05/2025

hQphotonics President and cofounder, Dr. Jiang Li presented a talk at the 2025 CLEO conference.
 
CLEO Conference paper number 4240494: Chip-scale low phase noise photonic microwave oscillator
ABSTRACT
We report a chip-scale high performance photonic microwave oscillator based on integrated electro-optical frequency division, which achieves a phase noise level of −141 dBc/Hz at 10 kHz offset for scaled 10 GHz carrier output.
 

01/21/2025

hQphotonics will be exhibiting at the SPIE Photonics West Conference at San Francisco, CA from January 22 to January 24, 2025.  
 
hQphotonics will release the ultra-high-Q silicon nitride resonators and spiral reference cavities, with packaged fiber pigtails in this exhibition! Visit us at our booth at Photonics West 2025!
 

01/21/2025

hQphotonics President and cofounder, Dr. Jiang Li is going to give a talk at the 2025 SPIE Photonics West conference.
 
SPIE Conference paper number 13349-25: Chip-scale high-performance photonic microwave oscillator
ABSTRACT
Optical frequency division based on bulk or fiber optics provides unprecedented spectral purity for microwave oscillators. To extend the applications of this approach, the challenges are to develop miniaturized oscillators without trading off phase noise performance. Here we report a chip-scale high performance photonic microwave oscillator based on integrated electro optical frequency division. Dual DFB lasers are co-self-injection-locked to a single silicon nitride spiral resonator to provide a record high-stability, fully on-chip optical reference. An integrated electro-optical frequency comb based on a thin-film lithium niobate phase modulator chip is leveraged for the first time to perform optical-to-microwave frequency division. The resulting integrated photonic microwave oscillator achieves a record low phase noise for chip-scale oscillators.
 

08/16/2024

hQphotonics President and cofounder, Dr. Jiang Li gave a 30-minute invited talk at the 2024 IEEE RAPID conference. 
 
FB3.2 (Invited) - Chip-scale high-performance photonic microwave oscillator
ABSTRACT
A chip-scale high performance photonic microwave oscillator based on integrated electro-optical frequency division is developed. A phase noise level of -129 dBc/Hz at 10 kHz offset for 37.7 GHz carrier is achieved for the chip-scale photonic microwave oscillator.
 

08/14/2024

Our paper on Chip-scale high-performance photonic microwave oscillator is now published in Science Advances. Record low phase noise based on integrated electro-optical frequency division is achieved for chip-scale oscillators.
 
Yang He, Long Cheng, Heming Wang, Yu Zhang, Roy Meade, Kerry Vahala, Mian Zhang, and Jiang Li. "Chip-scale high-performance photonic microwave oscillator." Science Advances 10, no. 33 (2024): eado9570.
 

04/16/2024
hQphotonics announced as Top 10 Photonics Solutions Provider in 2024.
Click here to read more

08/24/2023
hQphotonics was invited to give a lightning round presentation at the DARPA Electronics Resurgence Initiative (ERI) 2.0 SUMMIT in Seattle, WA.
07/13/2023
hQphotonics President and cofounder, Dr. Jiang Li gave a 30-minute invited talk at the 2023 Optica Nonlinear Optics (NLO) Topical Meeting.

Invited talk title: Small Size, Ultra-Low Phase Noise Photonic Microwave Oscillators

03/21/2023:
hQphotonics President and cofounder, Dr. Jiang Li gave a 20-minute invited talk at the GOMACTech 2023 conference in San Diego, CA.

Talk title: An Ultra-low Phase Noise Photonic Microwave Synthesizer

03/17/2023:
hQphotonics President and cofounder, Dr. Jiang Li was invited to give a 30-minute Plenary talk at the 2023 International Conference on Photonics, Optics and Laser Technology (https://photoptics.sciencezoplanet.com/). Plenary talk title: Small size, ultra-low phase noise photonic microwave oscillators at 10-40 GHz

03/01/2023:
hQphotonics is honored to receive the Top Photonics Solutions Provider 2023 award from Semiconductor Review magazine.

See the Semiconductor Review magazine article:

hQphotonics: Delivering Revolutionary Low-Phase-Noise Photonic Microwave Oscillators
https://www.semiconductorreview.com/hqphotonics

01/04/2023:
Our recent paper on Small-sized, ultra-low phase noise photonic microwave oscillators at X-Ka bands is now published in Optica. These oscillators significantly advance field-deployable, ULPN photonic microwave oscillators from 10 to 40 GHz:

Jiang Li and Kerry Vahala, "Small-sized, ultra-low phase noise photonic microwave oscillators at X-Ka bands," Optica 10, 33-34 (2023)

https://opg.optica.org/optica/fulltext.cfm?uri=optica-10-1-33&id=524767

Paper abstract: Small-sized, ultra-low phase noise photonic microwave oscillators at 10, 20, 30, and 40 GHz are demonstrated using electro-optical frequency division. At 40 GHz, a record-low, to our knowledge, phase noise of −153dBc/Hz is achieved (10 kHz offset). 

10/04/2022:
hQphotonics President and cofounder, Dr. Jiang Li, gave a 30-minute invited talk on Field-deployable, ultra-low phase noise photonic microwave oscillators at the 2022 International Topical Meeting on Microwave Photonics (2022 MWP): https://attend.ieee.org/mwp-2022/full-programme/

Invited Paper Abstract (#TU2.1, 2022 MWP): In this paper, compact, ultra-low phase noise (ULPN) photonic microwave oscillators at 10, 20, 30 and 40 GHz based on electro-optical frequency division (eOFD) are described. At 40 GHz a record-low phase noise of -153 dBc/Hz is achieved (10 kHz offset, 40 GHz carrier). The oscillators use typically 50W wall-plug power from a single 12V supply.

02/01/2022:
hQphotonics is awarded the recent DARPA GRYPHON program as the prime contractor to develop chip-scale, ultra low phase noise photonic microwave oscillators and synthesizers. See the DARPA news release here: https://www.darpa.mil/news-events/2022-01-27

11/01/2020:
hQphotonics is awarded a new 3-year DAPRA phase II program.

04/05/2019:
hQphotonics will be exhibiting at the joint Conference of the IEEE Frequency Control Symposium & European Frequency and Time Forum (IFCS-EFTF) 2019 at Orlando, Florida, USA from April 14 to 18, 2019. Visit us at our booth at IFCS-EFTF 2019!

10/04/2017:
hQphotonics President and cofounder, Dr. Jiang Li, gave a 30-minute invited talk on a 30 GHz ultra low phase noise microwave oscillator based on electro-optical frequency division at the IEEE Photonics Conference 2017 at Orlando, Florida. See the published conference proceeding here: https://ieeexplore.ieee.org/abstract/document/8116181

Paper Abstract:
A 30 GHz ultra-low-phase-noise oscillator is demonstrated using electro-optical frequency division. The measured phase noise is -151 dBc/Hz (10 kHz offset) and -109 dBc/Hz (100 Hz offset). Phase locking to an external reference for long term synchronization is also demonstrated.

07/15/2017:
Our recent paper on ultra low phase noise oscillator is published in 2017 IEEE Frequency Control Symposium: https://ieeexplore.ieee.org/document/8088863

05/02/2016:
hQphotonics will be exhibiting at the joint Conference of the IEEE Frequency Control Symposium & European Frequency and Time Forum (IFCS-EFTF) 2016 at New Orleans, LA, USA from May 9 to 12, 2016. Visit us at our booth at IFCS-EFTF 2016!

09/10/2015:
hQphotonics is awarded a new DARPA phase II program.

07/19/2014: The Caltech and NIST team published the electro-optical frequency division (eOFD) paper in Science:
Title: Electro-optical frequency division and stable microwave synthesis
https://www.science.org/doi/10.1126/science.1252909